report no. 768 soils proficiency testing round 14 july...

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Report No. 768

Soils Proficiency Testing

Round 14

July 2012

Acknowledgments

PTA wishes to gratefully acknowledge the technical assistance provided for this program by Mr G Hooper, Golder Associates Pty Ltd. Also our thanks go to The Nielson Group for the supply of the samples.

© Copyright Proficiency Testing Australia, 2012

PO Box 7507 SILVERWATER NSW 2128, Australia

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CONTENTS

1. FOREWORD .................................................................................................................. 1

2. FEATURES OF THE PROGRAM ................................................................................... 1

3. FORMAT OF THE APPENDICES ................................................................................... 2

4. STATISTICAL DESIGN OF THE PROGRAM ................................................................. 2

5. PTA AND TECHNICAL ADVISOR’S COMMENTS .......................................................... 3

Table A: Summary Statistics .......................................................................................... 4

Table D: Analysis of Grouped Methods .......................................................................... 5

Table E: California Bearing Ration by Round Comparison ............................................. 7

6. OUTLIER RESULTS ....................................................................................................... 8

Table F: Summary of Statistical Outliers ........................................................................ 8

7. REFERENCE/S .............................................................................................................. 9

APPENDIX A – Results and Data Analysis

Apparent Particle Density….......................................................................................... …A1

Liquid Limit…................................................................................................................ …A3

Plastic Limit.................................................................................................................. …A6

Plasticity Index............................................................................................................. …A8

Linear Shrinkage......................................................................................................... …A11

California Bearing Ratio at 2.5mm............................................................................... …A14

California Bearing Ratio at 5.0mm............................................................................... …A16

Achieved Dry Density before soaking.......................................................................... …A18

Achieved Moisture Content before soaking................................................................. …A20

Other Information........................................................................................................ …A22

APPENDIX B – Homogeneity Testing

Homogeneity Testing................................................................................................... …B1

APPENDIX C – Documentation

Instructions to Participants: Classification...................................................................... …C1

Instructions to Participants: California Bearing Ratio...................................................... …C2

Results Sheet: Classification.......................................................................................... …C3

Results Sheet: California Bearing Ratio.......................................................................... …C4

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1. FOREWORD

This report summarises the results of a proficiency testing program on the determination of Classification and California Bearing Ratio (CBR) on a soil sample. It constitutes the fourteenth round of an ongoing series of programs. The program was conducted in May 2012 by Proficiency Testing Australia (PTA). The aim of the program was to assess laboratories’ abilities to competently perform the prescribed analyses. The Program Coordinator was Ms L Galbraith and the Technical Advisor was Mr G Hooper, Golder Associates Pty Ltd. This report was authorised by Dr M Bunt, PTA Statistician.

2. FEATURES OF THE PROGRAM (a) Participants were provided with 1 labelled soil sample containing a clayey

gravel mix. (b) A total of 63 laboratories received samples, comprising:

- 62 Australian participants; and

- 1 Papua New Guinean participant.

Of these 63 laboratories, 7 were unable to submit results by the due date. (c) Laboratories were provided with the Instructions to Participants and Results

Sheet (see Appendix C). Laboratories were requested to perform the tests according to their routine methods and to record their results on the Results Sheet.

(d) Prior to sample distribution, a number of randomly selected samples were

analysed for homogeneity. Based on the results of this testing (see Appendix B), the homogeneity of the samples was established.

(e) Each laboratory was randomly allocated a unique code number for the

program to ensure confidentiality of results. Reference to each laboratory in this report is by code number only. Please note that a number of laboratories reported more than one set of results and, therefore, their code numbers (with letter) could appear several times in the same data set.

(f) Results (as reported by participants) with corresponding summary statistics

(i.e. number of results, median, uncertainty of the median, normalised interquartile range, robust coefficient of variation, minimum, maximum and range) are presented in Appendix A (for each sample and for each of the analyses performed.

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(g) A robust statistical approach, using z-scores, was utilised to assess laboratories’ testing performance (see Section 3). Robust z-scores and z-score charts relevant to each test are presented in Appendix A.

(h) The document entitled Guide to Proficiency Testing Australia, 2011 (reference

[1]) defines the statistical terms and details the statistical procedures referred to in this report.

(i) A tabulated listing of laboratories (by code number) identified as having outlier

results can be found on page 8.

3. FORMAT OF THE APPENDICES

(a) Appendix A contains the analysis of results reported by laboratories for the

samples. This section contains the following for each determinant, where appropriate: - a table of results and calculated z-scores;

- a list of summary statistics; and

- ordered z-score charts.

(b) Appendix B contains details of the homogeneity testing. (c) Appendix C contains copies of the Instructions to Participants and Results

Sheet.

4. STATISTICAL DESIGN OF THE PROGRAM (a) Outlier Results and Z-scores In order to assess laboratories’ testing performance, a robust statistical

approach, using z-scores, was utilised. Z-scores give a measure of how far a result is from the consensus value (i.e. the median), and gives a "score" to each result relative to the other results in the group.

A z-score close to zero indicates that the result agrees well with those from

other laboratories. Whereas, a z-score with an absolute value greater than or

equal to 3.0 is considered to be an outlier and is marked by the symbol “§”. (b) Results Tables and Summary Statistics Each of these tables contains the results returned by each laboratory,

including the code number for the method used, and the robust z-score calculated for each result.

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Results have been entered exactly as reported by participants. That is, laboratories which did not report results to the precision (i.e. number of

significant figures) requested on the Results Sheet have not been rounded to the requested precision before being included in the statistical analysis.

A list of summary statistics appears at the bottom of each of the tables of results and consists of:

- the number of results for that test/sample (No. of Results);

- the median of these results, i.e. the middle value (Median);

- the uncertainty of the median;

- the normalised interquartile range of the results (Normalised IQR);

- the robust coefficient of variation, expressed as a percentage (Robust CV) - i.e. 100 x Normalised IQR / Median;

- the minimum and maximum laboratory results; and

- the range (Maximum - Minimum).

The median is a measure of the centre of the data. The normalised IQR is a measure of the spread of the results. It is calculated by multiplying the interquartile range (IQR) by a correction factor which converts the IQR to an estimate of the standard deviation. The IQR is the difference between the upper and lower quartiles (i.e. the values above and below which a quarter of the results lie, respectively).

Please see reference [1] for further details on these robust summary statistics.

(c) Ordered Z-Score Charts On these charts each laboratory's robust z-score is shown, in order of

magnitude, and is marked with its code number. From these charts, each laboratory can readily compare its performance relative to the other laboratories.

These charts contain solid lines at +3.0 and -3.0, so that outliers are clearly

identifiable as those laboratories whose "bar" extends beyond these "cut-off" lines. The y-axis of these charts has been limited, so very large z-scores appear to extend beyond the chart boundary.

5. PTA AND TECHNICAL ADVISOR’S COMMENTS Analysis of Results by Method Groups Due to differences in the methods used by participants, results were grouped and analysed separately as Method 1 or Method 2. Method 1 includes the AS methods (relevant sections) and equivalent methods and Method 2 includes Q methods (relevant sections).

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No other methods were so prevalent in these groups that they could be analysed according to the method. The following table summarises the results submitted by participants for the program.

TABLE A: SUMMARY STATISTICS METHOD 1

Test No. of Results Median Normalised IQR

Liquid Limit (nearest 1%) 39 40.0 3.0

Linear Shrinkage (0.5%) 39 8.00 2.04

Plasticity Index (nearest 1%) 39 17.0 4.8

TABLE B: SUMMARY STATISTICS METHOD 2


Liquid Limit (nearest 1%) 15 40.0 1.9

Linear Shrinkage (0.5%) 15 8.00 0.56

Plasticity Index (nearest 1%) 15 15.0 3.3

For the remaining tests as part of Soils Round 14, methods were grouped together. It has been found that there are little differences between methods and thus could be analysed as part of one consensus. The following table summarises the results submitted by participants for the program.

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TABLE C: SUMMARY STATISTICS ALL METHODS


Apparent Particle Density (0.01 g/cm

3)

23 2.780 0.080

Plastic Limit (nearest 1%) 54 23.5 3.0

California Bearing Ratio @ 2.5mm (1%)

51 10.0 6.7


51 13.0 7.0

Achieved Dry Density before soaking (0.001 t/m

3)

51 1.8540 0.0056

Achieved Moisture Content (0.1%)

51 16.80 0.37

Grouped analysis was performed for methods appearing greater than or equal to 10 times in each test. The results are tabulated below.

TABLE D: ANALYSIS OF GROUPED METHODS

Test Grouped

method

No. of results Median Normalised

IQR Apparent

Particle Density (0.01 g/cm

3)

AS1289.3.5.1 13 2.720 0.193

Plastic Limit (nearest 1%)

AS1289.3.2.1

Q105

37

11

23.0

24.0

3.0

1.9 California

Bearing Ratio @ 2.5mm (1%)

AS1289.6.1.1 32 9.5 6.9

California Bearing Ratio @

5.0mm (1%) AS1289.6.1.1 28 13.0 6.9

Achieved Dry Density before

soaking (0.001 t/m

3)

AS1289.6.1.1 26 1.8555 0.0044

Achieved Moisture

Content (0.1%)

AS1289.6.1.1

AS1289.2.1.1

16

11

16.85

16.80

0.46

0.11

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Results returned for Soils Round 14 Proficiency Testing Program included Australian Standards (AS) and another predominate method (Q method). Due to the differences in each method the AS test method and Q test method were split into two separate consensus groups for tests relating to Sample 1: Classification. For Sample 2: California Bearing Ratio (CBR), both AS and the Q method were analysed together in the same consensus group.

5.1 Apparent Particle Density

Three outliers were reported for this test. Laboratory code 78 is encouraged to review their procedures.

5.2 Liquid Limit, Plastic Limit and Plasticity Index

Method one received one outlier for Liquid Limit and one outlier for Plasticity Index. Method two received one outlier for Liquid Limit. No outliers were reported for Plastic Limit. Laboratory Code 130 is encouraged to review their procedures for Plasticity Index. Plasticity Index is the calculation of the difference between the Liquid Limit (LL) and the Plastic Limit (PL) i.e. LL-PL. Thus Laboratory Code 130 may need to review its procedures for Liquid Limit in particular.

5.3 Linear Shrinkage and Linear Shrinkage Mould Length

Laboratory Code 61 and 122 received an outlier for Linear Shrinkage and was the only two outliers received in both method groups. No statistical analysis was performed on Linear Shrinkage Mould Length as it was for informational purposes only.

5.4 California Bearing Ratio at 2.5mm and 5.0mm

The spread of results received for CBR at 2.5 and 5.0 in Round 14 Soils Proficiency Testing Program is large. Although, the statistical analysis does not result in any outliers a smaller spread of results would be expected. As there is no industry standard for accepting a CBR result, a result within +/- 5 of the median would be expected. Laboratories reporting results outside this range are strongly encouraged to review their procedures. An analysis of laboratories’ uncorrected results was attempted to determine if it would reduce the spread, however, not all results were received and therefore the analysis could not be performed.

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Table E shows the Comparison of CBR results from previous rounds.

TABLE E: California Bearing Ratio By Round Comparison

Round Median (%)

2.5/5.0mm

Robust CV (%)

2.5/5.0mm

Range

2.5/5.0mm

No. Results

2.5/5.0mm

14 10.0/13.0 66.7/54.2 23/27 51/51

12 8.0/7.5 28.8/28.0 20.3/21 49/48

11 113.0/142.0 9.6/7.0 157/178 43/43

8

50.0/70.0 34.0/24.3 99/111 58/58

NATA No. 457

(July ’04)

140.0/185.0 37.1/30.1 260/210 38/30

5.5 Achieved Dry Density (ADD) Before Soaking and Achieved Moisture

Content (AMC)

Results reported for ADD and AMC were of a high standard with a CV of only 0.3% and 2.2% respectively. There were four outliers reported for ADD which comprised 7.8% of the total number of results reported. Two outliers were reported for AMC which comprised 3.9% of the total number of results reported.

5.6 Conclusion Overall a good performance was noted for classification tests, ADD and AMC. However a high CV was determined for CBR at 2.5mm and 5.0mm. All laboratories should be self examining their processes. Processes to examine include;

compaction patterns when moulding sample,

seating load at time of penetration

calculation, which includes careful scrutiny / examination of application to any correction which is applied to the penetration graph.

Laboratories must take greater care when reporting the method used in a test. Laboratory 31 reported an aggregate test method whilst laboratory 65 reported a method that does not allow corrections greater than 0.5. Also, laboratory 92B reported a method which is not a 1 point CBR. Laboratories returning outlier results and those returning results for CBR outside +/-5 of the median are strongly encouraged to review their processes.

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Metrological Traceability and Measurement Uncertainty of Assigned Values Consensus values (median) derived from participants’ results are used in this program. These values are not metrologically traceable to an external reference. As the assigned value for this program is the median of the results submitted by the participants, the uncertainty of the median has been calculated and is presented in the corresponding tables of Appendix A.

6. OUTLIER RESULTS

Laboratories reporting outlier results are listed in the following table:

TABLE F: SUMMARY OF STATISTICAL OUTLIERS

Test Laboratory

Code No.


3)

32, 125A, 125B

Liquid Limit (nearest 1%) 61, 130

Plasticity Index (nearest 1%) 130

Linear Shrinkage (0.5%) 61, 122

Achieved Dry Density before soaking (0.001 t/m

3)

55D, 76, 92B, 105B

Achieved Moisture Content (0.1%) 55D, 76

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TABLE G: CBR RESULTS OUTSIDE +/-5 OF THE MEDIAN

Test Laboratory

Code No.


1, 16, 27, 31, 55D, 75, 76, 79, 92A, 100, 105B,

108, 113A, 122, 124, 128, 137, 139, 141


1, 16, 31, 34, 55D, 75, 76, 78, 79, 92A, 100, 105B, 108, 112, 122,

124, 128, 132, 137, 139, 141, 143

7. Reference

[1] Guide to Proficiency Testing Australia, 2011 (This document can be found on the PTA website, www.pta.asn.au)

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APPENDIX A

Results and Data Analysis

Apparent Particle Density.......................................................................................... …A1

Liquid Limit................................................................................................................ …A3

Plastic Limit............................................................................................................... …A6

Plasticity Index......................................................................................................... …A8

Linear Shrinkage...................................................................................................... …A11

California Bearing Ration at 2.5mm......................................................................... …A14

California Bearing Ration at 5.0mm......................................................................... …A16

Achieved Dry Density before soaking....................................................................... …A18

Achieved Moisture Content before soaking.............................................................. …A20

Other Information..................................................................................................... …A22

A1

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Apparent Particle Density (0.01 g/cm3)

Lab Code Result Robust

Z-Score Method

1 2.88 1.25 1289.3.5.1

3 2.82 0.50 AS1289.3.5.1

10 2.75 -0.38 AS1141.5

32 2.34 -5.52 § AS1289.3.5.1

36 2.80 0.25 Q109A

45 2.72 -0.75 AS1289.3.5.1

47 2.84 0.75 Q109A

52 2.80 0.25 Q109A

75 2.83 0.63 AS1289.3.5.1

76 2.740 -0.50 Q109A

78 2.56 -2.76 AS1289.3.5.1

79 2.79 0.13 Q109A

92B 2.776 -0.05 Q109A

92C 2.795 0.19 Q109

103 2.71 -0.88 AS1141.5

125A 2.37 -5.14 § AS1289.3.5.1

125B 2.40 -4.77 § AS1289.3.5.1

129 2.64 -1.76 AS1289.3.5.1

130 2.81 0.38 1289.3.5.1

132 2.78 0.00 AS1289.3.5.1

139 2.85 0.88 AS1289.3.5.1

141 2.705 -0.94 AS1289.3.5.1

144 2.83 0.63 Q109A-1996

Note: A “§” indicates an outlier i.e. |z-score| ≥3.0.

Number of results

23

Median 2.780

Uncertainty (Median)

0.021

Normalised IQR

0.080

Robust CV 2.9%

Minimum 2.34

Maximum 2.88

Range 0.54

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Apparent Particle Density (0.01 g/cm3)

78

129

141

103 45 7

6

132

79 36

52 130

3 75

144

1

47 139

32

125A

125B

92C

10 9

2B

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A3

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Liquid Limit (nearest 1%) Method 1


Z-Score Method

1 42 0.67 3.1.1

3 41 0.34 AS1289.3.9.1

10 35 -1.69 AS1289.3.9.1

16 41 0.34 AS1289.3.1.1

23 41 0.34 AS1289.3.1.1

27 41 0.34 AS1289.3.1.1

28 39 -0.34 AS1289.3.1.1

32 38 -0.67 AS1289.3.1.1

45 37 -1.01 AS1289.3.1.1

55A 42 0.67 AS1289.3.1.1

55B 39 -0.34 AS1289.3.1.1

55C 43 1.01 AS1289.3.1.1

55D 37 -1.01 AS1289.3.1.1

57 40 0.00 AS1289

58 41.0 0.34 AS1289.3.9.1

75 40 0.00 AS1289.3.1.2

76 41 0.34 AS1289.3.9.1

78 35 -1.69 AS1289.3.1.1

85 36 -1.35 AS1289.3.1.1

89 41 0.34 AS1289.3.1.1

90 40 0.00 AS1289.3.1.1

100 42 0.67 AS1289.3.1.1

101 38 -0.67 AS1289.3.1.1

103 41 0.34 AS1289.3.1.1

105B 43 1.01 AS1289.3.1.1

107 46 2.02 AS1289.3.1.1

108 42 0.67 AS1289.3.1.1

112 38 -0.67 AS1289.3.1.1

113A 35 -1.69 AS1289.3.1.1

124 40 0.00 AS1289.3.1.1

125A 45 1.69 AS1289.3.1.1

125B 46 2.02 AS1289.3.1.1

128 37 -1.01 AS1289.3.1.1

129 39 -0.34 AS1289.3.1.1

130 52 4.05 § 1289.3.1.1

132 36 -1.35 AS1289.3.1.1



Z-Score Method

137 40 0.00 AS1289.3.3.1

139 44 1.35 AS1289.3.3.1

141 39 -0.34 AS1289.3.1.1

Number of results

39

Median 40.0


0.6

Normalised IQR

3.0

Robust CV 7.4%

Minimum 35

Maximum 52

Range 17


A4

SD 2.12.04


85

132

45

55D

128

32

28

55B

141

57

75

90

124

137

23

27

58

76

89

103 1 5

5A

100

108

55C

105B 139 1

25A 107

125B

130

3 16

10

78

113A

129

101

112

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A5

SD 2.12.04



Z-Score Method

6 40 0.00 Q104A-1986

31 41 0.54 Q104A

36 40 0.00 Q104A

47 40 0.00 Q104A

52 37 -1.62 Q104A

61 33 -3.78 § Q104A

65 41.0 0.54 Q104A

70 40 0.00 Q104A-1986

79 40 0.00 Q104A

92A 41.0 0.54 Q104A 2010

92B 38 -1.08 Q104A

92C 39 -0.54 Q104A

122 45.0 2.70 Q104A

143 41 0.54 Q104A

144 38 -1.08 Q104A-2010

Number of results 15

Median 40.0


0.6

Normalised IQR 1.9

Robust CV 4.6%

Minimum 33

Maximum 45

Range 12



144

92C

6 36

47

70

65

92A

122

31

79

143

92B

52

61

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A6

SD 2.12.04


Lab

Code Result

Robust

Z-Score Method

1 23 -0.17 3.2.1

3 25 0.51 AS1289.3.2.1

6 22 -0.51 Q105-1987

10 23 -0.17 AS1289.3.2.1

16 22 -0.51 AS1289.3.2.1

23 22 -0.51 AS1289.3.2.1

27 24 0.17 AS1289.3.2.1

28 22 -0.51 AS1289.3.2.1

31 22 -0.51 Q105

32 25 0.51 AS1289.3.2.1

36 24 0.17 Q105

45 26 0.84 AS1289.3.2.1

47 23 -0.17 Q105

52 27 1.18 Q105

55A 29 1.85 AS1289.3.2.1

55B 24 0.17 AS1289.3.2.1

55C 21 -0.84 AS1289.3.2.1

55D 26 0.84 AS1289.3.2.1

57 22 -0.51 AS1289

58 27.0 1.18 AS1289.3.2.1

61 23 -0.17 Q105

65 28.0 1.52 Q105

70 28 1.52 Q105-1987

75 22 -0.51 AS1289.3.2.1

76 27 1.18 AS1289.3.2.1

78 26 0.84 AS1289.3.2.1

79 25 0.51 Q105

85 26 0.84 AS1289.3.2.1

89 23 -0.17 AS1289.3.2.1

90 23 -0.17 AS1289.3.2.1

92A 25.0 0.51 Q105 2010

92B 25 0.51 Q105

92C 26.0 0.84 Q105

100 22 -0.51 AS1289.3.2.1

101 32 2.87 AS1289.3.2.1

103 21 -0.84 AS1289.3.3.1

105B 26 0.84 AS1289.3.2.1

107 22 -0.51 AS1289.3.2.1

108 22 -0.51 AS1289.3.2.1


Lab

Code Result

Robust

Z-Score Method

112 20 -1.18 AS1289.3.2.1

113A 21 -0.84 AS1289.3.2.1

122 24.0 0.17 Q105

124 20 -1.18 AS1289.3.2.1

125A 19 -1.52 AS1289.3.2.1

125B 20 -1.18 AS1289.3.2.1

128 26 0.84 AS1289.3.2.1

129 25 0.51 AS1289.3.2.1

130 18 -1.85 1289.3.2.1

132 24 0.17 AS1289.3.2.1

137 21 -0.84 AS1289.3.2.1

139 24 0.17 AS1289.3.2.1

141 27 1.18 AS1289.3.2.1

143 19 -1.52 Q105

144 23 -0.17 Q105-2010

Number of results

54

Median 23.5


0.5

Normalised IQR

3.0

Robust CV 12.6%

Minimum 18

Maximum 32

Range 14

A7

SD 2.12.04

Plastic Limit (nearest 1%)112

124

125B

55C

103

113A

16

23

31

57

75

100

107

108

1

47

61

89

90

144

27

36

55B

122

132

139

3 32

79

92A

92B

129 4

5

55D

78

85

92C

105B

128

52

58

76

141 6

5

70

55A

101

10

130 125A

143

28

137

6

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A8

SD 2.12.04

Plasticity Index (nearest 1%) Method 1


Z-Score Method

1 19 0.42 3.3.1

3 16 -0.21 AS1289.3.3.1

10 12 -1.04 AS1289.3.3.2

16 19 0.42 AS1289.3.3.1

23 19 0.42 AS1289.3.3.1

27 17 0.00 AS1289.3.3.1

28 17 0.00 AS1289.3.3.1

32 13 -0.83 AS1289.3.3.1

45 11 -1.25 AS1289.3.3.1

55A 13 -0.83 AS1289.3.3.1

55B 15 -0.42 AS1289.3.3.1

55C 22 1.04 AS1289.3.3.1

55D 11 -1.25 AS1289.3.3.1

57 18 0.21 AS1289

58 14.0 -0.62 AS1289.3.3.2

75 18 0.21 AS1289.3.3.1

76 14 -0.62 AS1289.3.3.2

78 9 -1.66 AS1289.3.3.1

85 10 -1.45 AS1289.3.3.1

89 18 0.21 AS1289.3.3.1

90 17 0.00 AS1289.3.3.1

100 20 0.62 AS1289.3.3.1

101 6 -2.28 AS1289.3.3.1

103 20 0.62 AS1289.3.3.1

105B 17 0.00 AS1289.3.3.1

107 24 1.45 AS1289.3.3.1

108 20 0.62 AS1289.3.3.1

112 18 0.21 AS1289.3.3.1

113A 14 -0.62 AS1289.3.3.1

124 20 0.62 AS1289.3.3.1

125A 26 1.87 AS1289.3.3.1

125B 26 1.87 AS1289.3.3.1

128 11 -1.25 AS1289.3.3.1

129 14 -0.62 AS1289.3.3.1

130 34 3.53 § 1289.3.3.1

132 12 -1.04 AS1289.3.3.1



Z-Score Method

137 19 0.42 AS1289.3.3.1

139 20 0.62 AS1289.3.3.1

141 12 -1.04 AS1289.3.3.1

Number of results

39

Median 17.0


1.0

Normalised IQR

4.8

Robust CV 28.3%

Minimum 6

Maximum 34

Range 28

Note: A “§” indicates an outlier i.e. |z-score| ≥3.0

A9

SD 2.12.04


45

55D

128

10

132

141

58

76

129 55B

3

27

28

90 7

5

89

112 1 16

23

137 100

103

108

124

139

55C

107

125A

125B

130

105B

57

101

78

85

113A

32

55A

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A10

SD 2.12.04



Z-Score Method

6 18 0.90 Q105-1987

31 19 1.20 Q105

36 17 0.60 Q105

47 17 0.60 Q105

52 10 -1.50 Q105

61 10 -1.50 Q105

65 13.0 -0.60 Q105

70 12 -0.90 Q105-1987

79 15 0.00 Q105

92A 16.2 0.36 Q105 2010

92B 13 -0.60 Q105

92C 13.0 -0.60 Q105

122 21.0 1.80 Q105

143 22 2.10 Q105

144 15 0.00 Q105-2010

Number of results

15

Median 15.0


1.1

Normalised IQR 3.3

Robust CV 22.2%

Minimum 10

Maximum 22

Range 12


65

92B

92C

79

144 9

2A

6

31

143

47

36

122

70

61

52

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A11

SD 2.12.04

Linear Shrinkage (0.5%) Method 1


Z-Score Method

1 8.0 0.00 3.4.1

3 9.0 0.49 AS1289.3.4.1

10 8.0 0.00 AS1289.3.4.1

16 9 0.49 AS1289.3.4.1

23 9.0 0.49 AS1289.3.4.1

27 10.5 1.23 AS1289.3.3.1

28 8.5 0.25 AS1289.3.4.1

32 6.0 -0.98 AS1289.3.4.1

45 7.0 -0.49 AS1289.3.4.1

55A 8.5 0.25 AS1289.3.4.1

55B 7.0 -0.49 AS1289.3.4.1

55C 8.5 0.25 AS1289.3.4.1

55D 8.0 0.00 AS1289.3.4.1

57 9.0 0.49 AS1289

58 8.0 0.00 AS1289.3.4.1

75 5.5 -1.23 AS1289.3.4.1

76 8.5 0.25 AS1289.3.4.1

78 5.5 -1.23 AS1289.3.4.1

85 7.0 -0.49 AS1289.3.4.1

89 13 2.45 AS1289.3.4.1

90 8.5 0.25 AS1289.3.4.1

100 7.5 -0.25 AS1289.3.4.1

101 5.0 -1.47 AS1289.3.4.1

103 5.5 -1.23 AS1289.3.4.1

105B 9.0 0.49 AS1289.3.4.1

107 9.0 0.49 AS1289.3.4.1

108 5.0 -1.47 In-house method

112 6.5 -0.74 AS1289.3.4.1

113A 5.0 -1.47 AS1289.3.4.1

124 5.5 -1.23 AS1289.3.4.1

125A 11.0 1.47 AS1289.3.4.1

125B 10.5 1.23 AS1289.3.4.1

128 6.0 -0.98 AS1289.3.4.1

129 7.0 -0.49 AS1289.3.4.1

130 12.5 2.21 1289.3.4.1

132 6.0 -0.98 AS1289.3.4.1



Z-Score Method

137 8.5 0.25 AS1289.3.4.1

139 10.0 0.98 AS1289.3.4.1

141 9.0 0.49 AS1289.3.4.1

Number of results

39

Median 8.00


0.41

Normalised IQR

2.04

Robust CV 25.5%

Minimum 5

Maximum 13

Range 8.0

A12

SD 2.12.04


75

78

103

124

32

128

45

55B

129 1

00

1 10

55D

58

28

55C

76

90

137 3 1

6

23

57

105B

107

141

139 2

7

125B

125A

130 8

9

112

132

85

113A

108

101

55A

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A13

SD 2.12.04



Z-Score Method

6 8 0.00 Q106-1989

31 7.5 -0.90 Q106

36 8.5 0.90 Q106

47 8.0 0.00 Q106

52 8.0 0.00 Q106

61 10 3.60 § Q106

65 9.0 1.80 Q106

70 8 0.00 Q106-1989

79 8.0 0.00 Q106

92A 9.0 1.80 Q106-1989

92B 7.5 -0.90 Q106

92C 8.5 0.90 Q106

122 10.0 3.60 § Q106

143 8.0 0.00 Q106

144 7.5 -0.90 Q106-1989

Number of results

15

Median 8.00


0.18

Normalised IQR 0.56

Robust CV 6.9%

Minimum 7.5

Maximum 10

Range 2.5

Note: A “§” indicates an outlier i.e. |z-score| ≥3.0


6 47

52

70

79

143

65

92A

122

92C

36

61

144

92B

31

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A14

SD 2.12.04



Z-Score Method

1 18 1.20 1289.6.1.1

3 9.0 -0.15 AS1289.6.1.1

14 8 -0.30 #

16 16 0.90 AS1289.6.1.1

23 9 -0.15 AS1289.6.1.1

27 17 1.05 #

28 10 0.00 AS1289.6.1.1

31 3 -1.05 Q213A

32 6 -0.60 AS1289.6.1.1

34 15 0.75 AS1289.6.1.1

36 6 -0.60 Q113C

45 11 0.15 AS1289.6.1.1

47 8 -0.30 Q113C

52 15 0.75 #

55A 8 -0.30 AS1289.6.1.1

55B 11 0.15 AS1289.6.1.1

55C 7 -0.45 AS1289.6.1.1

55D 4 -0.90 AS1289.6.1.1

57 6 -0.60 AS1289.6.1.1

58 5 -0.75 AS1289.6.1.1

61 5 -0.75 AS1289.6.1.1

65 5.0 -0.75 Q113C

75 4.0 -0.90 AS1289.6.1.1

76 19 1.35 AS1289.6.1.1

78 5 -0.75 AS1289.6.1.1

79 22 1.80 Q113C

89 15 0.75 AS1289.6.1.1

90 8 -0.30 AS1289.6.1.1

92A 18 1.20 Q113C 2010

92B 15 0.75 Q113A

92C 12 0.30 Q113C

100 25 2.25 AS1289.6.1.1

105B 3 -1.05 AS1289.6.1.1

107 7 -0.45 #

108 23 1.95 In-house method



Z-Score Method

112 14 0.60 AS1289.6.1.1

113A 18 1.20 AS1289.6.1.1

118 10 0.00 AS1289.6.1.1

122 18.0 1.20 Q113C

124 2.0 -1.20 AS1289.6.1.1

125A 13 0.45 #

125B 11 0.15 #

128 23 1.95 AS1289.6.1.1

129 9 -0.15 AS1289.6.1.1

130 11 0.15 AS1289.6.1.1

132 15 0.75 AS1289.6.1.1

137 3 -1.05 #

139 18 1.20 AS1289.6.1.1

141 3 -1.05 AS1289.6.1.1

143 5 -0.75 Q113A

144 10 0.00 #

Number of results

51

Median 10.0


1.17

Normalised IQR

6.7

Robust CV 66.7%

Minimum 2

Maximum 25

Range 23

Note: Some results have been rounded to the nearest 1%. Note: A “#” indicates no response was provided.

A15

SD 2.12.04

California Bearing Ratio @ 2.5mm (1%)141 31 75

55D 5

8

61

143 3

2

57

55C

107 1

4

47

90 2

3

129

28

118

144

45 55B

125B

130 92C 125A

112 34

52

89

92B

132 16 2

7 1 92A

113A

122

139 76

79 1

08

128 1

00

55A

3

124

105B

137

36

65

78

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A16

SD 2.12.04



Z-Score Method

1 19 0.85 1289.6.1.1

3 13 0.00 AS1289.6.1.1

14 11 -0.28 #

16 22 1.28 AS1289.6.1.1

23 12 -0.14 AS1289.6.1.1

27 18 0.71 #

28 16 0.43 AS1289.6.1.1

31 6.0 -0.99 Q213A

32 9.0 -0.57 AS1289.6.1.1

34 19 0.85 AS1289.6.1.1

36 8 -0.71 Q113C

45 13 0.00 AS1289.6.1.1

47 13 0.00 Q113C

52 17 0.57 #

55A 11 -0.28 #

55B 14 0.14 #

55C 9 -0.57 #

55D 5 -1.14 #

57 10 -0.43 AS1289.6.1.1

58 13 0.00 AS1289.6.1.1

61 8 -0.71 AS1289.6.1.1

65 8.0 -0.71 Q113C

75 6.0 -0.99 AS1289.6.1.1

76 25 1.70 AS1289.6.1.1

78 7 -0.85 AS1289.6.1.1

79 25 1.70 Q113C

89 16 0.43 AS1289.6.1.1

90 11 -0.28 AS1289.6.1.1

92A 21 1.14 Q113C 2010

92B 15 0.28 Q113A

92C 15 0.28 Q113C

100 30 2.41 AS1289.6.1.1

105B 5 -1.14 AS1289.6.1.1

107 9 -0.57 #

108 24 1.56 In-house method



Z-Score Method

112 19 0.85 AS1289.6.1.1

113A 18 0.71 AS1289.6.1.1

118 13 0.00 AS1289.6.1.1

122 22.0 1.28 Q113C

124 3.0 -1.42 AS1289.6.1.1

125A 17 0.57 #

125B 15 0.28 #

128 30 2.41 AS1289.6.1.1

129 11 -0.28 AS1289.6.1.1

130 15 0.28 AS1289.6.1.1

132 19 0.85 AS1289.6.1.1

137 3 -1.42 #

139 25 1.70 AS1289.6.1.1

141 5 -1.14 AS1289.6.1.1

143 7 -0.85 Q113A

144 16 0.43 #

Number of results

51

Median 13.0


1.2

Normalised IQR

7.0

Robust CV 54.2%

Minimum 3

Maximum 30

Range 27

Note: Some results have been rounded to the nearest 1%. Note: A “#” indicates no response was provided.

A17

SD 2.12.04

California Bearing Ratio @ 5.0mm (1%)105B

141 31

75 7

8

143 65 32

107 5

7 14

55A 90

129 2

3

45

47

58

118

55B 92B

92C

125B

130

28

89

144 52

125A

27

113A

1 34

112

132 9

2A 16

122 108 76

79

139

100

128

61

36

55C

55D

137

124

3

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A18

SD 2.12.04

Achieved Dry Density before soaking

(0.001 t/m3)


Z-Score Method

1 1.858 0.72 1289.6.1.1

3 1.851 -0.54 AS1289.6.1.1

14 1.852 -0.36 #

16 1.861 1.26 AS1289.6.1.1

23 1.859 0.90 AS1289.6.1.1

27 1.856 0.36 #

28 1.854 0.00 AS1289.6.1.1

31 1.848 -1.08 Q213A

32 1.866 2.16 AS1289.6.1.1

34 1.857 0.54 AS1289.6.1.1

36 1.842 -2.16 Q113C

45 1.842 -2.16 AS1289.6.1.1

47 1.856 0.36 Q113C

52 1.856 0.36 #

55A 1.854 0.00 #

55B 1.854 0.00 #

55C 1.850 -0.72 #

55D 1.737 -21.04 § #

57 1.853 -0.18 AS1289.6.1.1

58 1.850 -0.72 #

61 1.858 0.72 AS1289.6.1.1

65 1.849 -0.90 Q113C

75 1.850 -0.72 AS1289.6.1.1

76 1.877 4.14 § AS1289.5.1.1

78 1.855 0.18 AS1289.6.1.1

79 1.857 0.54 Q113C

89 1.858 0.72 AS1289.6.1.1

90 1.845 -1.62 AS1289.6.1.1

92A 1.849 -0.90 Q113C 2010

92B 1.830 -4.32 § Q113A

92C 1.853 -0.18 Q113C

100 1.854 0.00 AS1289.6.1.1

105B 1.835 -3.42 § AS1289.6.1.1

107 1.849 -0.90 #

108 1.848 -1.08 In-house method

Achieved Dry Density before soaking

(0.001 t/m3)


Z-Score Method

112 1.855 0.18 AS1289.6.1.1

113A 1.856 0.36 AS1289.6.1.1

118 1.857 0.54 AS1289.6.1.1

122 1.859 0.90 Q113C

124 1.841 -2.34 AS1289.6.1.1

125A 1.850 -0.72 #

125B 1.860 1.08 #

128 1.859 0.90 AS1289.5.1.1

129 1.863 1.62 AS1289.6.1.1

130 1.852 -0.36 AS1289.6.1.1

132 1.856 0.36 AS1289.6.1.1

137 1.855 0.18 #

139 1.852 -0.36 AS1289.6.1.1

141 1.854 0.00 AS1289.5.1.1

143 1.859 0.90 Q113A

144 1.858 0.72 #

Number of results

51

Median 1.8540


0.0010

Normalised IQR

0.0056

Robust CV 0.3%

Minimum 1.737

Maximum 1.877

Range 0.14

Note: A “§” indicates an outlier i.e. |z-score| ≥3.0. Note: A “#” indicates no response was provided.

A19

SD 2.12.04

Achieved Dry Density before soaking (0.001 t/m3)124 3

6

45

90

31

108 107 55C

75

125A

3 14

130

139 5

7

28

55A

55B

100

141 78

112

137 27

47

52

113A

132 34

79

118 1 61

89

144 23

122

128

143 125B

16

129

32

76

92A65 5

8

105B

92B

55D

92C

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A20

SD 2.12.04



Z-Score Method

1 16.5 -0.81 1289.6.1.1

3 17.0 0.54 AS1289.6.1.1

14 16.7 -0.27 #

16 16.4 -1.08 AS1289.2.1.1

23 16.8 0.00 AS1289.2.1.1

27 16.7 -0.27 #

28 16.8 0.00 AS1289.6.1.1

31 17.3 1.35 Q213

32 16.2 -1.62 AS1289.6.1.1

34 16.6 -0.54 AS1289.2.1.1

36 17.5 1.89 Q113C

45 17.6 2.16 AS1289.6.1.1

47 16.6 -0.54 Q113C

52 16.7 -0.27 #

55A 16.9 0.27 #

55B 16.7 -0.27 #

55C 17.5 1.89 #

55D 18.3 4.05 § #

57 16.9 0.27 AS1289.2.1.1

58 17.1 0.81 #

61 16.8 0.00 AS1289.2.1.1

65 17.2 1.08 Q113C

75 16.8 0.00 AS1289.2.1.1

76 15.6 -3.24 § AS1289.2.1.1

78 17.2 1.08 AS1289.6.1.1

79 16.6 -0.54 Q113C

89 16.3 -1.35 AS1289.6.1.1

90 17.2 1.08 AS1289.6.1.1

92A 17.1 0.81 Q113C 2010

92B 17.9 2.97 Q113A

92C 16.8 0.00 Q113C

100 16.8 0.00 AS1289.6.1.1

105B 17.9 2.97 AS1289.6.1.1

107 17.0 0.54 #

108 16.1 -1.89 RMST117



Z-Score Method

112 16.7 -0.27 AS1289.2.1.1

113A 16.6 -0.54 AS1289.6.1.1

118 16.7 -0.27 AS1289.2.1.1

122 16.5 -0.81 Q102A

124 17.2 1.08 AS1289.6.1.1

125A 17.1 0.81 #

125B 16.4 -1.08 #

128 16.8 0.00 AS1289.2.1.1

129 16.5 -0.81 AS1289.6.1.1

130 17.0 0.54 AS1289.6.1.1

132 16.6 -0.54 AS1289.6.1.1

137 17.0 0.54 #

139 16.9 0.27 AS1289.6.1.1

141 16.8 0.00 AS1289.2.1.1

143 16.8 0.00 Q102A

144 16.5 -0.81 #

Number of results

51

Median 16.80


0.07

Normalised IQR

0.37

Robust CV 2.2%

Minimum 15.6

Maximum 18.3

Range 2.7

Note: A “§” indicates an outlier i.e. |z-score| ≥3.0. Note: A “#” indicates no response was provided.

A21

SD 2.12.04

Achieved Moisture Content (0.1%)89

16

125B

1

122

129

47

79

132

14

27

52

55B

112

118

28

61

75

92C

100

128

141

143 5

5A

57

139 3 1

07

130

137 5

8

92A

125A

65

78

90

124 3

1

36

55C 4

5

92B

105B

55D

34

144

113A

32

108

76

23

-3

-2

-1

0

1

2

3

Laboratory code

z-s

co

re

A22

SD 2.12.04

Other information

Lab

Code

Emerson

Class

Number

Method

Linear

Shrinkage

Mould

Length

(nearest

1.0mm)

Method

California

Bearing

Ratio Load

@ 2.5mm

(1N)

Method

1 # # 250 250 2380 1289.6.1.1

3 # # 250 250 1228 AS1289.6.1.1

6 # # 150 150 # #

10 # # 254 254 # #

14 # # # # 1104 #

16 4 AS1289.3.8.1 250 250 2110 AS1289.6.1.1

23 # # 250.0 250.0 1175 AS1289.6.1.1

27 # # 250.0 250.0 2200 AS1289.6.1.1

28 # # 250 250 1301 AS1289.6.1.1

31 # # 152 152 440 Q213A

32 # # 250 250 35 AS1289.6.1.1

34 # # # # 2000 AS1289.6.1.1

36 # # 150.0 150.0 636 Q113C

45 3 AS1289.3.8.1 124 124 1412 AS1289.6.1.1

47 4 AS1289.3.8.1 150 150 782 Q113C

52 # # 150 150 1923 Q113C

55A # AS1289.3.8.1 250 250 601 #

55B 4 AS1289.3.8.1 250 250 1040 #

55C 4 AS1289.3.8.1 250 250 430 #

55D 4 AS1289.3.8.1 251 251 290 #

57 # # 250 250 844 AS1289.6.1.1

58 # # 250 250 590 AS1289.6.1.1

61 # # 151 151 651 AS1289.6.1.1

65 # # 150.0 150.0 440 Q113C

70 # # 150 150 # #

75 8 AS1289.3.8.1 254 254 317 AS1289.6.1.1

76 # # 128 128 1814 AS1289.6.1.1

78 4 AS1289.3.8.1 250 250 680 AS1289.6.1.1

79 # # 150.0 150.0 2961 #

85 # # 250 250 # #

89 # # 250 250 2012 AS1289.6.1.1

90 # # 252 252 450 AS1289.6.1.1

92A # # 150.0 150.0 1959 Q113C 2010

92B # # 150.0 150.0 1992 Q113A

92C # # 150.0 150.0 1544 Q113C

100 # # 250.0 250.0 3432 AS1289.6.1.1

101 # # 253.8 253.8 # #

103 # # 254.0 254.0 # #

105B # # 254 254 450 AS1289.6.1.1

107 4 AS1289.3.8.1 251 251 560 AS1289.6.1.1

108 # # 254 254 2995 RMST117

112 4 AS1289.3.8.1 251 251 1900 AS1289.6.1.1

A23

SD 2.12.04

Other information

Lab

Code

Emerson

Class

Number

Method

Linear

Shrinkage

Mould

Length

(nearest

1.0mm)

Method

California

Bearing

Ratio Load

@ 2.5mm

(1N)

Method

113A 4 AS1289.3.8.1 250 250 3081 AS1289.6.1.1

118 # # # # 1320 AS1289.6.1.1

122 # # 149.9 149.9 2380 Q113C

124 4 AS1289.3.8.1 14 14 276 AS1289.6.1.1

125A 2.0 AS1289.3.8.1 250 250 104 AS1289.6.1.1

125B 2 AS1289.3.8.1 250 250 82 AS1289.6.1.1

128 # # 250 250 2970 AS1289.6.1.1

129 3 AS1289.3.8.1 127.2 127.2 1152 AS1289.6.1.1

130 4 1289.3.8.1 250 250 1400 AS1289.6.1.1

132 4 AS1289.3.8.1 250.0 250.0 1930 AS1289.6.1.1

137 # # 254 254 344 #

139 N/A # 249.92 249.92 2380 AS1289.6.1.1

141 N/A N/A 250 250 428 AS1289.6.1.1

143 N/A N/A 150 150 560 Q113A

144 # # 150.0 150.0 # Q113C-1998

Note: A “#” indicates no response was provided.

A24

SD 2.12.04

Other Information

Lab

Code

California

Bearing

Ratio Load

@ 5.0mm

(1N)

Method

Penetration

Correction

applied

(0.1mm)

Method

Compaction

Apparatus

Type

1 3800 1289.6.1.1 # # Mechanical

3 2574 AS1289.6.1.1 0.3 AS1289.6.1.1 Mechanical

14 2172 # 1.3 # Manual

16 4330 AS1289.6.1.1 1.0 AS1289.6.1.1 Manual

23 2317 AS1289.6.1.1 0.8 AS1289.6.1.1 Manual

27 3500 # 3.0 # Manual

28 3100 AS1289.6.1.1 0 AS1289.6.1.1 Manual

31 1190 Q213A 0.5 Q213A Manual

32 85 AS1289.6.1.1 At 2.5mm is

13.2 At 5.0mm is 19.8

AS1289.6.1.1 Manual

34 3700 AS1289.6.1.1 0.1 AS1289.6.1.1 Mechanical

36 1489 Q113C # # Manual

45 2653 AS1289.6.1.1 1.3 AS1289.6.1.1 Manual

47 2238 Q113C 0.50 Q113C Manual

52 3295 # 0.0 # Manual

55A 1578 # 1.5 # Manual

55B 2370 # 0.7 # Manual

55C 1120 # 1.7 # Manual

55D 690 # 1.6 # Manual

57 2047 AS1289.6.1.1 0.0 AS1289.6.1.1 Manual

58 2630 AS1289.6.1.1 0.0 AS1289.6.1.1 Manual

61 1493 AS1289.6.1.1 0.0 AS1289.6.1.1 Mechanical

65 1312 Q113C 2.0 Q113C Manual

75 796 AS1289.6.1.1 1.25 AS1289.6.1.1 Manual

76 4118 AS1289.6.1.1 0.7 AS1289.6.1.1 Manual

78 1300 AS1289.6.1.1 2.0 AS1289.6.1.1 Manual

79 5102 # 0.4 Q113C Manual

89 3143 AS1289.6.1.1 0 AS1289.6.1.1 Manual

90 1360 AS1289.6.1.1 1.9 AS1289.6.1.1 Manual

92A 3858 Q113C 2010 0.5 Q113C 2010 Manual

92B 2941 Q113A 0.0 Q113A Manual

92C 3029 Q113C 0.4 Q113C Manual

100 5958 AS1289.6.1.1 0.5 AS1289.6.1.1 Manual

105B 970 AS1289.6.1.1 0.5 AS1289.6.1.1 Mechanical

107 1460 # 1.0 # Mechanical

108 4790 RMST117 0.1 RMST117 Manual

112 3705 AS1289.6.1.1 0.6 AS1289.6.1.1 Manual

A25

SD 2.12.04

Other Information

Lab

Code

California

Bearing

Ratio Load

@ 5.0mm

(1N)

Method

Penetration

Correction

applied

(0.1mm)

Method

Compaction

Apparatus

Type

113A 3652 AS1289.6.1.1 0 AS1289.6.1.1 Manual

118 2583 AS1289.6.1.1 1.6 AS1289.6.1.1 Manual

122 4446 Q113C 0.5 Q113C Manual

124 540 AS1289.6.1.1 0 AS1289.6.1.1 Mechanical

125A 273 # 1.100 # Mechanical

125B 224 # 1.250 # Mechanical

128 5880 AS1289.6.1.1 0.0 AS1289.6.1.1 Manual

129 2178 AS1289.6.1.1 2.1 AS1289.6.1.1 Manual

130 3040 AS1289.6.1.1 0.2 AS1289.6.1.1 Manual

132 3820 AS1289.6.1.1 0.0 AS1289.6.1.1 Manual

137 547 # No correction # Manual

139 4590 AS1289.6.1.1 0.95 AS1289.6.1.1 Manual

141 895 AS1289.6.1.1 0.0 AS1289.6.1.1 Manual

143 1193 Q113A 0.5 Q113A Mechanical

144 # # 0.5 # Manual

Note: A “#” indicates no response was provided

SD 2.12.04

APPENDIX B

Homogeneity Testing

Homogeneity Testing................................................................................................ …B1

B1

SD 2.12.04

Homogeneity Testing

Soils Round 14 – Proficiency Testing Homogeneity Results

Lab no.

CBR Results Liquid Limit (%)

Plastic Limit (%)

PI Linear

Shrinkage (%)

Emerson Class

Apparent Particle Density (t/m

3)

Achieved Moisture Content

(%)

Achieved Dry Density

(t/m3)

Swell (%)

CBR @ 2.5mm

CBR @ 5.0mm

Penetration Correction

(mm)

Achieved Density

Ratio (%)

12301408 17.2 1.847 -0.31 10.6 13.8 1.1 99.6 36.7 25.5 11.2 8.7 3 2.723

12301409 17.1 1.849 -0.09 11.7 14.8 1.2 99.7 37.9 24.7 13.2 8.0 3 2.709

12301410 16.8 1.854 -0.05 10.1 13.2 1.7 100.0 36.6 25.2 11.4 8.1 3 2.707

12301411 17.2 1.847 -0.37 10.6 13.4 1.1 99.6 36.1 25.1 11.0 8.2 3 2.703

12301412 17.6 1.841 -0.14 11.3 14.6 1.2 99.3 36.6 24.6 12.0 8.1 3 2.726

12301413 16.9 1.852 -0.24 11.4 14.7 1.2 99.9 36.8 24.7 12.1 8.8 3 2.715

12301414 17.1 1.848 -0.01 11.4 14.6 1.2 99.7 36.1 24.4 11.7 8.2 3 2.743

12301415 17.2 1.847 -0.09 11 14.3 1.1 99.6 36.4 25.3 11.1 7.7 3 2.713

12301416 17.1 1.85 -0.04 10.7 13.4 1.2 99.8 36.3 24.2 12.1 7.8 3 2.737

12301417 16.9 1.852 -0.09 10.6 13.8 1.2 99.9 36.2 24.1 12.1 7.8 3 2.747

Mean 17.1 1.8 -0.1 10.9 14.1 1.2 99.7 36.6 24.8 11.8 8.1 3 2.722

Standard Deviation

0.22 0.00 0.12 0.50 0.61 0.18 0.20 0.53 0.48 0.66 0.37 0.00 0.016

Coefficient of Variation

0.013 0.002 -0.854 0.046 0.043 0.144 0.002 0.014 0.019 0.056 0.045 0.000 0.006

Lowest Value

16.8 1.841 -0.37 10.1 13.2 1.1 99.30 36.1 24.1 11 7.7 3 2.703

Highest Value

17.6 1.854 -0.01 11.7 14.8 1.7 100 37.9 25.5 13.2 8.8 3 2.747

SD 2.12.04

APPENDIX C

Documentation

Instructions to Participants: Classification……………………………………………… C1

Instructions to Participants: California Bearing Ratio…………………………………. C2

Results Sheet: Classification…………………………………………………………….C3

Results Sheet: California Bearing Ratio.……………………………………………….C4

C1

SD 2.12.04

PROFICIENCY TESTING AUSTRALIA

Proficiency Testing Program

Soils Round Part 14A: Classification

INSTRUCTIONS TO PARTICIPANTS

Please read instructions carefully BEFORE commencing testing. To ensure that the results of this program can be analysed properly, participants are asked to carefully note the following: 1. The following tests are to be conducted:

Apparent Particle Density Emersion Class

Liquid Limit Linear Shrinkage

Plastic Limit Linear Shrinkage Mould Length

Plasticity Index

2. These tests are based on AS1289, however other methods may be used.

Apparent Particle Density AS1289.3.5.1 Determination of the soil particle density of a soil – standard method. The -2.36mm fraction only to be tested.

Liquid Limit AS1289.3.1.1. Determination of the liquid limit of a soil – Four point Casagrande Method.

Plastic Limit AS1289.3.2.1. Determination of the plastic limit of a soil – standard method.

Plasticity Index AS1289.3.3.1. Calculation of the plasticity index of a soil.

Emerson Class AS1289.3.8.1. Methods of testing soils for engineering purposes.

Linear Shrinkage AS1289.3.4.1. Determination of the linear shrinkage of a soil – standard method.

3. For each test on the sample, the result is to be reported on the results sheet to the

accuracy and reporting basis indicated. 4. Testing may commence as soon as the sample is received. All laboratories must return

the result sheet no later than 14 May 2012 to:

Ms Laura Galbraith

Proficiency Testing Australia

PO Box 7507, SILVERWATER NSW 2128

Phone: 02 9736 8397 Fax: 02 9743 6664 Email: [email protected]

C2

SD 2.12.04


Proficiency Testing Program

Soils Round Part 14B: California Bearing Ratio

INSTRUCTIONS TO PARTICIPANTS

Please read instructions carefully BEFORE commencing testing. To ensure that the results of this program can be analysed properly, participants are asked to carefully note the following:

1. Adjust the sample moisture content to 16.8% and allow to cure for a minimum period of 24 hours prior to remoulding (compaction)

2. Perform AS 1289.6.1.1 (1998) - preferable, or equivalent:

Determination of the California Bearing Ratio of a soil, following the criteria set out below;

- Standard laboratory method for a remoulded specimen soaked/

- Standard Compactive Effort to be used.

- Sample to be remoulded in 3 layers to a 1.854 t/m3 dry density.

- The surcharge mass to be applied = 4.5 kg.

- 4 day soaked Test

-Swell Measurements to be recorded and Swell % calculated

3. Report results (to the accuracy indicated) on the provided “Results Sheet”. Results

are to include an attached plot of the penetration data.

Laboratories are to perform tests according to their accredited method.

After all testing has been completed, laboratories are asked to seal and retain any of the remaining sample for at least 3 months.

Testing may commence as soon as the sample and documentation are received.

Please return results no later than 14 May 2012 to:

Laura Galbraith


PO Box 7507

SILVERWATER NSW 2128

Phone: 02 9736 8397

Fax: 02 9743 666

Email: [email protected]

C3

SD 2.12.04


Soils 14 Part A: Classification

Results Sheet

Lab Code:

Test

(report to) Result Method


3)

Liquid Limit (nearest 1%)


Plasticity Index (nearest 1%)

Emerson Class Number

Linear Shrinkage (0.5%)

Linear Shrinkage Mould Length (nearest 1.0mm)

Return no later than 14 May 2012 to:

Ms Laura Galbraith


PO Box 7507, Silverwater, NSW, 2128

Fax: 02 9743 6664


Signed: Date:

C4

SD 2.12.04


Soils Part 14B: CBR

Results Sheet

Lab Code:

Test

(report to) Result Method

California Bearing Ratio Load @ 2.5mm

(1N)

California Bearing Ratio Load @ 5.0mm

(1N)



Penetration Correction applied (0.1mm)

Achieved Dry Density before soaking (0.001 t/m3)

Achieved Moisture Content before soaking (0.1%)

Compaction Apparatus Type (circle type used)

Manual Mechanical

Return no later than 14 May 2012 to:

Ms Laura Galbraith


PO Box 7507, Silverwater, NSW, 2128

Fax: 02 9743 6664


Signed: Date:

SD 2.12.04

- End of Report -

report no. 768 soils proficiency testing round 14 july...

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