aggregates (round 9) proficiency testing program...

AGGREGATES (ROUND 9)

PROFICIENCY TESTING PROGRAM

JANUARY 2012

REPORT NO. 743

ACKNOWLEDGMENTS PTA wishes to gratefully acknowledge the technical assistance provided for this program by Mr G Hooper of Golder Associates Pty Ltd. This assistance included preparation, distribution and homogeneity testing of the samples, along with input into the design of the program, technical advice and discussion in the final report.

© COPYRIGHT PROFICIENCY TESTING AUSTRALIA 2012 PO Box 7507, Silverwater NSW 2128, AUSTRALIA

CONTENTS

1. Foreword ..................................................................................................................... 1

2. Features of the Program.............................................................................................. 1

3. Format of the Appendices............................................................................................ 2

4. Statistical Design of the Program ................................................................................ 2

Table A: Summary Statistics.............................................................................................. 3

5. Outlier Results ............................................................................................................. 4

Table B: Outlier Results..................................................................................................... 5

6. PTA and Technical Advisor's comments ..................................................................... 6

7. Reference .................................................................................................................... 9

APPENDIX A – Summary of Results and Robust Z-score Charts

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

Particle Density on Dry Basis ..........................................................................................A3

Particle Density on Saturated-Surface-Dry Basis ............................................................A5

Water Absorption.............................................................................................................A7

Particle Size Distribution..................................................................................................A9

Passing 0.075mm by Washing ......................................................................................A22

Flakiness Index..............................................................................................................A24

Average Least Dimension 10mm and greater ...............................................................A26

Particle Shape by Proportional Caliper..........................................................................A28

Bulk Density of Aggregate .............................................................................................A30

Aggregate Crushing Value.............................................................................................A32

APPENDIX B – Homogeneity Testing

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

APPENDIX C – Documentation

Instructions to Participants...............................................................................................C1

Results Sheet ..................................................................................................................C2

1

1. FOREWORD

This report summarises the results of a proficiency testing program on selected mechanical tests of aggregate. This exercise was conducted in November 2011 by Proficiency Testing Australia (PTA). The Program Coordinator was Ms L Galbraith. The aim of the program was to assess laboratories’ ability to competently perform the tests examined. This report was authorised by Mr P Briggs, PTA General Manager.

2. FEATURES OF THE PROGRAM a) A total of 53 laboratories registered for the program. A total of 64 samples

were dispatched and 48 results were returned in time for inclusion in the final report. The tests performed in the program include: • Particle Density and Water Absorption of Course Aggregate • Particle Size Distribution • Passing 0.075mm by Washing • Flakiness index • Average Least Dimension (ALD) 10mm and greater • Particle Shape by Proportional Caliper (2:1 ratio only) • Bulk Density of Aggregate (Uncompacted only) • Aggregate Crushing Value 400kN

b) Ten randomly selected samples were analysed for homogeneity. Based on

the results of this testing, it was concluded that the samples were sufficiently homogeneous. Therefore, any results later identified as outliers could not be attributed to any notable sample variability (see Appendix B).

c) Laboratories were requested to perform the tests according to the

“Instructions to Participants” and to record their results on the accompanying “Results Sheet,” both of which were distributed to participants with the samples (Appendix C).

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

program to enable confidentiality of results. Reference to each laboratory in this report is made by its Laboratory Code Number. Please note that a number of laboratories reported more than one set of results and, therefore, their code numbers are accompanied with a letter to differentiate the sets of data.

2

3. FORMAT OF THE APPENDICES

APPENDIX A Appendix A lists all the results reported by the participating laboratories for

each test.

Calculated robust z-scores, z-score charts and a table of robust statistics are presented for the following tests: • Particle Density and Water Absorption of Course Aggregate • Particle Size Distribution • Passing 0.075mm by Washing • Flakiness Index • Average Least Dimension (ALD) 10mm and greater • Particle Shape by Proportional Caliper (2:1 ratio only) • Bulk Density of Aggregate (Uncompacted only) • Aggregate Crushing Value 400kN

APPENDIX B Appendix B contains details of homogeneity testing data.

APPENDIX C Appendix C contains a copy of the “Instructions to Participants” and the

“Results Sheet” as supplied to participants. 4. STATISTICAL DESIGN OF THE PROGRAM

Robust statistical procedures were used to generate the z-scores and summary statistics for the results, including: • number of results; • median; • uncertainty (median) • normalised IQR; • robust coefficient of variation; • minimum; • maximum; and • range.

Robust z-scores were calculated for each laboratory based on the results

submitted.

3

TABLE A: Summary Statistics

Test No. of Results Median Normalised IQR

Particle Density and Water Absorption of Course

Aggregate

Apparent Particle Density (nearest 0.01 t/m3)

39 2.740 0.007

Particle Density on a Dry Basis (nearest 0.01 t/m3) 39 2.700 0.007

Particle Density on a Saturated-Surface-Dry Basis (nearest 0.01 t/m3)

39 2.710 0.007

Water Absorption (nearest 0.1%)

39 0.60 0.07

Particle Size Distribution (individual percent retained to

nearest 0.1%)

13.2mm 47 15.20 2.59

9.5mm 47 63.30 4.04

6.7mm 47 18.10 2.45

4.75mm 47 0.80 0.22

2.36mm 47 0.20 0.07

0.075mm 44 0.80 0.22

Passing 0.075mm by Washing (nearest 0.1%)

42 1.70 0.35

Flakiness Index (nearest 1%)

42 18.0 3.4

Average Least Dimension (ALD) 10mm and greater (nearest 0.1mm)

40 8.00 0.59

Particle Shape by Proportional Calliper

(nearest 1%)

33 20.40 5.19

Bulk Density of Aggregate (Uncompacted only) (nearest 0.01t/m3)

38 1.440 0.037

Aggregate Crushing Value 400kN (nearest 0.1%) 28 13.30 0.87

4

5. OUTLIER RESULTS

Consensus values (median) derived from participants results are used in this program. These values are not metrologically traceable to an external reference. Sample preparation was undertaken according to Golder Associates Pty Ltd Standard Operating Procedures to ensure samples were fit-for-purpose and homogeneous.

In order to achieve the program's aim of assessing laboratories' testing

performance, a robust statistical approach, which uses z-scores to assess participant’s performance, has been utilised. The z-score is a measure of how far the result(s) is from the consensus value - a normalised value which gives a "score" to each result relative to the other results in the group. Therefore a z-score close to zero means that the result agrees well with those from other laboratories. An outlier will be any result(s) which has an absolute z-score value greater than or equal to three.

5

TABLE B: Outlier Results

Test Laboratory Code

Particle Density and Water Absorption of Course Aggregate

Apparent Particle Density (nearest 0.01 t/m3) 39

Particle Density on a Dry Basis (nearest 0.01 t/m3) 39

Particle Density on a Saturated-Surface-Dry Basis

(nearest 0.01 t/m3) 39


39

Particle Size Distribution (individual percent retained to nearest

0.1%)

13.2mm 12

9.5mm 12

6.7mm 12, 13A, 13B, 35B, 44, 53

4.75mm 12

2.36mm 12, 35B

0.075mm 30, 36, 46, 49

Passing 0.075mm by Washing (nearest 0.1%) 12, 13A, 13B, 35B, 67


--

Average Least Dimension (ALD) 10mm and greater (nearest 0.1mm)

16, 30

Particle Shape by Proportional Calliper

(nearest 1%)

45A

Bulk Density of Aggregate (Uncompacted only) (nearest 0.01t/m3)

70

Aggregate Crushing Value 400kN (nearest 0.1%) --

Note: A ‘--' indicates no laboratories received an outlier for this test.

6

6 PTA AND TECHNICAL ADVISOR’S COMMENTS General Comments For this round, of the 48 laboratories returning results, 14 laboratories have been identified as having reported one or more outlier results. Of the 658 results returned for z-score analysis, 28 results were outliers. Therefore, 4.3% have been identified as outlier results. Any laboratories reporting outliers are encouraged to review their procedures.

6.1 Particle Density and Water Absorption of Course Aggregate Particle Density and Water Absorption of Course Aggregate includes the tests

Apparent Particle Density, Particle Density on a Dry Basis, Particle Density on a Saturated Surface and Water Absorption. Laboratories performed well in all tests. Adjustments were made to the CV for results +/-0.023 t/m3 from the median. These were adjusted according to Australian Standards reproducibility guidelines.

Laboratory code 39 received an outlier for each test. This laboratory is

encouraged to check their procedures and calibration of equipment.

Participants using method AS1141.6.1 for Particle Density and Water Absorption of Course Aggregates have been grouped to provide results as follows:

Particle Density and Water Absorption of Course Aggregates

Apparent Particle Density (nearest 0.01

t/m3)

Particle Density on a

Dry Basis (nearest 0.01

t/m3)

Particle Density on a Saturated-

Surface-Dry basis

(nearest 0.01 t/m3)

Water Absorption

(nearest 0.1%)

No. of Results 34 34 34 34

Median 2.740 2.700 2.710 0.60

Normalised IQR

0.007 0.007 0.007 0.06

Approximately 87% of the participants that submitted results for Particle Density and Water Absorption of Course Aggregates used the AS1141.6.1 method. Therefore, the results of the grouped analysis comparative to the consensus results show little or no variation. No other methods were so prevalent that they could be analysed as a grouped method.

7

6.2 Particle Size Distribution Few laboratories reported results as percent passing rather than the instructed individual percent retained. These laboratories were contacted by the Program Coordinator to check and resubmit results. Laboratories 13A, 13B, 35B, 44 and 53 reported outlier results for sieve size 6.7mm and should check their process and their equipment for wear or damage and that the correct sieve size is being used. For Particle Size Distribution sieve size 0.075mm, laboratory code 36 received an outlier that is due to testing at a dry basis rather than wet as required. Laboratory code 12 appears to have reported the percent passing rather than the individual percent retained. Attention to detail when reading the instructions and results worksheets is imperative. Method AS1141.11 and AS1141.11.1 are technically equivalent, therefore results generated using these methods have been pooled for analysis.

Particle Size Distribution (individual percent retained to nearest 0.1%)

13.2mm 9.5mm 6.7mm 4.75mm 2.36mm 0.075mm

No. of Results 37 37 37 37 37 37

Median 14.80 62.80 18.80 0.90 0.20 0.80

Normalised IQR

2.30 4.52 2.22 0.22 0.07 0.22

Approximately 84% of the participants that submitted results for particle size distribution used the AS1141.11 or AS1141.11.1 method. The results of the grouped analysis comparative to the consensus results show little or no variation. No other methods were so prevalent that they could be analysed as a grouped method.

8

6.3 Passing 0.075mm by washing

The number of participants that received outliers for passing the 0.075mm by washing was 5. Of these participants, 2 reported results that were not washed as instructed and thus the result was notably higher than the consensus. Approximately 74% of participants that submitted results for Passing 0.075mm by Washing used the AS1141.12 method from which the grouped analysis showed little variation (median; 1.70, normIQR; 0.22).

6.4 Flakiness Index

There were no outliers received by participants that submitted results for Flakiness Index. Of the participants reporting results for Flakiness Index approximately 76% of participants reported using the AS1141.15 method. There were no notable differences in the grouped analysis of the AS1141.15 method (median; 18.0, normIQR; 3.15). No other methods were so prevalent that they could be analysed as a grouped method.

6.5 Average Least Dimension (ALD) 10mm and Grea ter

The Instructions to Participants states that the ALD Direct Measurement is to be used when determining the ALD. Few laboratories reported results using an indirect method whilst few laboratories were not specific as to whether they used the direct or indirect method. As a result these laboratories could not be grouped together for separate analysis. Approximately 68% of laboratories reported using the AS1141.20.1 method. Their results were pooled together for a group analysis. The analysis returned a median of 7.70 and a normalised IQR of 0.37. In such cases it is important to report the method used to its specificity so that as much information can be obtained from the data as possible.

6.6 Particle Shape by Proportional Calliper

Results returned for Particle Shape by Proportional Calliper gave a high CV of 25.4%. The large spread of results indicates a problem between laboratory specific procedures. Laboratories are encouraged to review their procedures and equipment according to AS1141.14 and ensure the correct ratio is being used when determining the particle shape.

9

6.7 Bulk Density of Aggregate (Uncompacted only) This test was conducted as uncompacted only. The performance of

participants reporting results in Bulk Density of Aggregate was very good. The results reported showed a very low reproducibility with a low robust coefficient of variation of 2.6%. Laboratory code 70 received an outlier for this test and is advised to check their calculation process and ensure the appropriate mould size was used.

Sixty-eight percent of participants that submitted results for bulk density of

aggregates reported using the method AS1141.4. These participants were grouped and analysed to give a median of 1.440 and a normalised IQR of 0.037. When compared to the consensus values the median and normalised IQR has remained the same.

6.8 Aggregate Crushing Value 400kN

There were no outliers reported for Aggregate Crushing Value. Performance of participants in this test was good with low results in coefficient of variance and low normalised inter-quartile range. Participants that reported results for Aggregate Crushing Value had 75% of results reported using method AS1141.21. Analysis of this grouped method gave a median 13.30 and a Normalised IQR of 0.67.

6.9 Conclusion

It is imperative that participants read the instructions carefully and take note of the units asked to be reported to avoid erroneous outliers. When reporting the method used, it is essential in analysing grouped methods that the data is reported most accurate. This will ensure we can obtain as much information as possible from the data set. Overall laboratory performance is highly commended with a low proportion of laboratories reporting outlier results. The results demonstrate confidence in the procedures and the laboratories performing them.

7 REFERENCE

[1] Guide to Proficiency Testing Australia (2011). [This document is located on the PTA website at www.pta.asn.au, under Programs/Documents].

APPENDIX A

Summary of Results and Robust Z-score Charts

A1

Apparent Particle Density (nearest 0.01 t/m 3)

Laboratory Code Result Robust

z-score Method

3 2.74 0.00 AS1141.6.1

6 2.75 1.45 AS1141.6.1

7A 2.74 0.00 AS1141.6.1

7B 2.75 1.45 AS1141.6.1

11 2.74 0.00 AS1141.6.1

13A 2.73 -1.45 Q214B-1996

13B 2.74 0.00 Q214B-1996

15 2.74 0.00 AS1141.6.1

16 2.73 -1.45 AS1141.6.1

18 2.74 0.00 AS1141.6.1

19 2.76 2.90 AS1141.6.1

20 2.74 0.00 AS1141.6.1

21 2.74 0.00 AS1141.6.1

27 2.73 -1.45 AS1141.6.1

28 2.74 0.00 AS1141.6.1

29 2.74 0.00 AS1141.6.1

30 2.75 1.45 AS1141.6.1

31 2.74 0.00 AS1141.6.1

34 2.75 1.45 AS1141.6.1

35A 2.74 0.00 AS1141.6.1

35B 2.738 -0.29 AS1141.6.1

36 2.75 1.45 BS EN1097-6: 2000 C18

38 2.74 0.00 AS1141.6.1

39 2.70 -5.80 § AS1141.6.1

42 2.74 0.00 AS1141.6.1

45A 2.74 0.00 AS1141.6.1

45B 2.74 0.00 AS1141.6.1

46 2.74 0.00 AS1141.6.1

47 2.74 0.00 AS1141.6.1

49 2.72 -2.90 AS1141.6.1

50 2.74 0.00 AS1141.6.1

53 2.74 0.00 AS1141.6.1

54 2.75 1.45 AS1141.6.1

56 2.74 0.00 AS1141.6.1

58 2.74 0.00 AS1141.6.2

60 2.74 0.00 AS1141.6.1

64 2.75 1.45 AS1141.6.1

68 2.74 0.00 ASTM C 127-07

70 2.74 0.00 1141.6.1

Note: A “§” indicates an outlier i.e. z-

score ≥3.0 Adjustment made to the CV for

results +/- 0.023 tm3 from the median.

Number of results 39

Median 2.740

Normalised IQR 0.007

Robust CV 0.3% Uncertainty (Median) 0.001

Minimum 2.70 Maximum 2.76

Range 0.06

A2

Apparent Particle Density

(nearest 0.01 t/m 3)16 27

35B

3 7A 11 18 20 28 29 31 35A

38 42 45A

46 47 50 53 56 58 60 68 70

6 7B 30 34 36 54 64

19

1513B

21

13A

4939

45B

-3

-2

-1

0

1

2

3

Laboratory code

z-sc

ore

A3

Particle Density on a Dry Basis (nearest 0.01 t/m 3)


z-score Method

3 2.70 0.00 AS1141.6.1

6 2.69 -1.35 AS1141.6.1

7A 2.69 -1.35 AS1141.6.1

7B 2.70 0.00 AS1141.6.1

11 2.70 0.00 AS1141.6.1

13A 2.69 -1.35 Q214B-1996

13B 2.70 0.00 Q214B-1996

15 2.69 -1.35 AS1141.6.1

16 2.68 -2.70 AS1141.6.1

18 2.69 -1.35 AS1141.6.1

19 2.72 2.70 AS1141.6.1

20 2.70 0.00 AS1141.6.1

21 2.70 0.00 AS1141.6.1

27 2.70 0.00 AS1141.6.1

28 2.71 1.35 AS1141.6.1

29 2.71 1.35 AS1141.6.1

30 2.70 0.00 AS1141.6.1

31 2.69 -1.35 AS1141.6.1

34 2.71 1.35 AS1141.6.1

35A 2.70 0.00 AS1141.6.1

35B 2.689 -1.48 AS1141.6.1

36 2.71 1.35 BS EN1097-6: 2000 C18

38 2.69 -1.35 AS1141.6.1

39 2.56 -18.89 § AS1141.6.1

42 2.70 0.00 AS1141.6.1

45A 2.70 0.00 AS1141.6.1

45B 2.70 0.00 AS1141.6.1

46 2.70 0.00 AS1141.6.1

47 2.69 -1.35 AS1141.6.1

49 2.68 -2.70 AS1141.6.1

50 2.70 0.00 AS1141.6.1

53 2.69 -1.35 AS1141.6.1

54 2.71 1.35 AS1141.6.1

56 2.70 0.00 AS1141.6.1

58 2.69 -1.35 AS1141.6.2

60 2.69 -1.35 AS1141.6.1

64 2.70 0.00 AS1141.6.1

68 2.70 0.00 ASTM C 127-07

70 2.69 -1.35 1141.6.1


score ≥3.0


Median 2.700




Range 0.16

A4

Particle Density on a Dry Basis (nearest 0.01 t/m 3)

35B 6

7A 13A 15 18 47 53 60 70

3 7B 11 13B

20 27 30 35A

42 45A

45B

46 50 56 64 68

28 29 34 36 54

19

21

39

16 49

5831 38

-3

-2

-1

0

1

2

3

Laboratory code

z-sc

ore

A5

Particle Density on a Saturated-Surface-Dry Basis (nearest 0.01 t/m 3)


z-score Method

3 2.71 0.00 AS1141.6.1

6 2.71 0.00 AS1141.6.1

7A 2.71 0.00 AS1141.6.1

7B 2.72 1.35 AS1141.6.1

11 2.71 0.00 AS1141.6.1

13A 2.71 0.00 Q214B-1996

13B 2.72 1.35 Q214B-1996

15 2.710 0.00 AS1141.6.1

16 2.70 -1.35 AS1141.6.1

18 2.71 0.00 AS1141.6.1

19 2.73 2.70 AS1141.6.1

20 2.72 1.35 AS1141.6.1

21 2.71 0.00 AS1141.6.1

27 2.71 0.00 AS1141.6.1

28 2.73 2.70 AS1141.6.1

29 2.72 1.35 AS1141.6.1

30 2.72 1.35 AS1141.6.1

31 2.71 0.00 AS1141.6.1

34 2.73 2.70 AS1141.6.1

35A 2.71 0.00 AS1141.6.1

35B 2.707 -0.40 AS1141.6.1

36 2.72 1.35 BS EN1097-6: 2000 C18

38 2.71 0.00 AS1141.6.1

39 2.61 -13.49 § AS1141.6.1

42 2.72 1.35 AS1141.6.1

45A 2.71 0.00 AS1141.6.1

45B 2.71 0.00 AS1141.6.1

46 2.72 1.35 AS1141.6.1

47 2.71 0.00 AS1141.6.1

49 2.70 -1.35 AS1141.6.1

50 2.71 0.00 AS1141.6.1

53 2.71 0.00 AS1141.6.1

54 2.72 1.35 AS1141.6.1

56 2.71 0.00 AS1141.6.1

58 2.71 0.00 AS1141.6.2

60 2.71 0.00 AS1141.6.1

64 2.72 1.35 AS1141.6.1

68 2.71 0.00 ASTM C 127-07

70 2.71 0.00 1141.6.1


score ≥3.0


Median 2.710




Range 0.12

A6

Particle Density on a Saturated-Surface-Dry Basis ( nearest 0.01 t/m 3)

35B

3 6 7A 11 13A

21 27 35A

38 45A

45B

47 50 53 58 60 68 70

7B 13B

20 29 30 36 42 46 54 64

19 28 34

56

39

16 49

3115 18

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A7

Water Absorption (nearest 0.1%) Laboratory

Code Result Robust z-score

Method

3 0.6 0.00 AS1141.6.1

6 0.7 1.35 AS1141.6.1

7A 0.7 1.35 AS1141.6.1

7B 0.7 1.35 AS1141.6.1

11 0.55 -0.67 AS1141.6.1

13A 0.6 0.00 Q214B-1996

13B 0.6 0.00 Q214B-1996

15 0.6 0.00 AS1141.6.1

16 0.6 0.00 AS1141.6.1

18 0.6 0.00 AS1141.6.1

19 0.5 -1.35 AS1141.6.1

20 0.5 -1.35 AS1141.6.1

21 0.6 0.00 AS1141.6.1

27 0.4 -2.70 AS1141.6.1

28 0.5 -1.35 AS1141.6.1

29 0.5 -1.35 AS1141.6.1

30 0.7 1.35 AS1141.6.1

31 0.6 0.00 AS1141.6.1

34 0.5 -1.35 AS1141.6.1

35A 0.6 0.00 AS1141.6.1

35B 0.7 1.35 AS1141.6.1

36 0.5 -1.35 BS EN1097-6: 2000 C18

38 0.6 0.00 AS1141.6.1

39 2.0 18.89 § AS1141.6.1

42 0.6 0.00 AS1141.6.1

45A 0.5 -1.35 AS1141.6.1

45B 0.6 0.00 AS1141.6.1

46 0.6 0.00 AS1141.6.1

47 0.6 0.00 AS1141.6.1

49 0.6 0.00 AS1141.6.1

50 0.5 -1.35 AS1141.6.1

53 0.6 0.00 AS1141.6.1

54 0.5 -1.35 AS1141.6.1

56 0.6 0.00 AS1141.6.1

58 0.6 0.00 AS1141.6.2

60 0.7 1.35 AS1141.6.1

64 0.6 0.00 AS1141.6.1

68 0.5 -1.35 ASTM C 127-07

70 0.7 1.35 1141.6.1


score ≥3.0


Median 0.60

Normalised IQR 0.07



Range 1.6

A8


28 29 34 36

45A 50

11

3 13B

15 16 18 21 31 35A

42 45B

46 47 49 53 56 58 64

6 7A 7B 30 35B

60 70

39

6854

13A

2019

27

38

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A9

Particle Size Distribution (nearest 0.1%)

Laboratory Code 26.5mm 19.0mm 13.2mm Robust

z-score Method

1 0 0 21.8 2.54 AS1141.11.1

3 0.0 0.0 15.0 -0.08 AS1141.11

4 0.0 0.0 17.2 0.77 Q103B

6 0.0 0.0 18.9 1.43 AS1141.11

7A # # 11.4 -1.46 AS1141.11.1

7B # # 10.8 -1.70 AS1141.11.1

8 # # 17 0.69 Q103B

10 0 0 16.3 0.42 AS1141.11

11

0 0 14.1 -0.42

AS1141.11.1 (washed) (except for

the reporting of results)

12 # # 82.3 25.86 § AS1141.11

13A # # 11.2 -1.54 AS1141.11

13B # # 12.1 -1.19 AS1141.11

15 0.0 0.0 16.0 0.31 AS1141.11

16 0 0 17.1 0.73 Q103B-1996

18 0 0 16.7 0.58 AS1141.11

19 0.0 0.0 13.3 -0.73 AS1141.11.1

20 0.0 0.0 13.2 -0.77 AS1141.11

21 0 0 17.4 0.85 AS1141.11.1

27 # 0 14.8 -0.15 AS1141.11.1

28 0.0 0.0 15.9 0.27 AS1141.11.1

29 0 0 18.7 1.35 AS1141.11 & 12

30 0.0 0.0 11.0 -1.62 #

31 # # 15.3 0.04 AS1141.11.1

34 0.0 0.0 14.3 -0.35 AS1141.11

35A # 0.0 16.1 0.35 AS1141.11

35B # 0.0 9.4 -2.24 AS1141.11

36 0.0 0.0 14.3 -0.35 BS EN 933-1:1997

38 # # 14.8 -0.15 AS1141.11

39 0 0 15.6 0.15 AS1141.1

40 0 0 16.7 0.58 Q103B

42 0.0 0.0 16.4 0.46 AS1141.11.1

44 # # 20.4 2.00 Q103B

45A 0.0 0.0 13.5 -0.66 AS1141.11.1

45B 0 0 11.6 -1.39 AS1141.11.1

46 0.0 0.0 18.0 1.08 AS1141.11.1

47 # # 10.4 -1.85 AS1141.11.1

49 0 0 14 -0.46 AS1141.11.1

50 0.0 0.0 15.2 0.00 AS1141.11

A10


Laboratory Code 26.5mm 19.0mm 13.2mm Robust

z-score Method

51 0 0 16.3 0.42 AS1141.11

53 # 0.0 21.9 2.58 AS1141.12

54 0.0 0.0 11.2 -1.54 AS1141.11.1

56 # 0.0 13.6 -0.62 AS1141.11.1

58 0.0 0.0 18.0 1.08 AS1141.11

60 # 0 9.3 -2.27 AS1141.11.1

64 # # 14.1 -0.42 AS1141.11

67 0.0 0.0 16.8 0.62 AS1141.11

70 0.0 0.0 15.0 -0.08 1141.11.1

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

A “#’ indicates no response was provided.

Number of results 30 36 47

Median 15.20 Normalised

IQR 2.59

Robust CV 17.1% Uncertainty (Median) 0.07 Minimum 9.3 Maximum 82.3

Range 73

A11

Particle Size Distribution 13.2mm (individual perce nt retained to nearest 0.1%) 7B 30 13

A 54 7A 45B

19 45A 49 11 64 34 36

27 38 70

50 31 39 28 15 35A

10 51 42 18 40 67 8 16 4 21

46 58

29 6

44

1 5312

3

60 35B

47

56

13B

20

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A12


Laboratory Code 9.5mm Robust

z-score 6.7mm Robust

z-score Method

1 60.1 -0.79 14.5 -1.47 AS1141.11.1

3 67.9 1.14 13.8 -1.76 AS1141.11

4 63.6 0.07 16.6 -0.61 Q103B

6 62.9 -0.10 14.5 -1.47 AS1141.11

7A 66.1 0.69 18.8 0.29 AS1141.11.1

7B 67.8 1.11 17.6 -0.20 AS1141.11.1

8 63.3 0.00 16.7 -0.57 Q103B

10 67.3 0.99 13.1 -2.04 AS1141.11

11

62.8 -0.12 19.6 0.61



12 17.3 -11.39 § 2.6 -6.34 § AS1141.11

13A 56.3 -1.73 27.8 3.97 § AS1141.11

13B 57.3 -1.49 26.8 3.56 § AS1141.11

15 64.5 0.30 16.0 -0.86 AS1141.11

16 61.9 -0.35 17.8 -0.12 Q103B-1996

18 59.1 -1.04 19.9 0.74 AS1141.11

19 62.4 -0.22 20.6 1.02 AS1141.11.1

20 66.2 0.72 16.9 -0.49 AS1141.11

21 60.9 -0.59 18.1 0.00 AS1141.11.1

27 66.2 0.72 16.3 -0.74 AS1141.11.1

28 63.2 -0.02 18.0 -0.04 AS1141.11.1

29 57.4 -1.46 20.0 0.78 AS1141.11 & 12

30 66.5 0.79 19.7 0.65 #

31 61.0 -0.57 20.2 0.86 AS1141.11.1

34 61.9 -0.35 20.2 0.86 AS1141.11

35A 59.4 -0.97 20.8 1.10 AS1141.11

35B 58.9 -1.09 25.8 3.15 § AS1141.11

36 66.3 0.74 16.8 -0.53 BS EN 933-1:1997

38 63.3 0.00 19.2 0.45 AS1141.11

39 65.8 0.62 15.4 -1.10 AS1141.1

40 64.7 0.35 15.2 -1.19 Q103B

42 60.6 -0.67 19.6 0.61 AS1141.11.1

44 66.8 0.87 9.4 -3.56 § Q103B

45A 61.5 -0.45 20.6 1.02 AS1141.11.1

45B 68.1 1.19 16.1 -0.82 AS1141.11.1

46 59.7 -0.89 18.1 0.00 AS1141.11.1

47 67.0 0.92 18.9 0.33 AS1141.11.1

49 64 0.17 19 0.37 AS1141.11.1

50 61.8 -0.37 19.2 0.45 AS1141.11

A13




z-score Method

51 63.8 0.12 17.2 -0.37 AS1141.11

53 64.3 0.25 10.6 -3.07 § AS1141.12

54 67.8 1.11 17.8 -0.12 AS1141.11.1

56 66.5 0.79 16.4 -0.69 AS1141.11.1

58 59.8 -0.87 18.8 0.29 AS1141.11

60 66.8 0.87 19.4 0.53 AS1141.11.1

64 62.2 -0.27 19.1 0.41 AS1141.11

67 58.6 -1.16 20.5 0.98 AS1141.11

70 63.5 0.05 18.0 -0.04 1141.11.1

Number of

results 47

47

Median 63.30 18.10 Normalised

IQR 4.04

2.45

Robust CV 6.4% 13.5% Uncertainty (Median) 0.74 0.45 Minimum 17.3 2.6 Maximum 68.1 27.8

Range 50.8 25.2

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


A14

Particle Size Distribution 9.5mm (individual percen t retained to nearest 0.1%) 29

67 35B 18 35A 46

42 21 45A 50 16 34 64 19 11

28 8 38 70 4 51 49 53 15 4039 7A 20 27 36 30 56 44 60 47 10 7B 54 3 45

B

1

58

31

13B

13A

12

6-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A15

Particle Size Distribution 6.7mm (individual percen t retained to nearest 0.1%) 10

3

1 640 39

27 56

8 36 20 51 7B 16 54 70

21 46

7A 58 47 49 64 38 50 60 11 42 30 18 29 31 34 67 19 45A

35A

35B

13B

13A

28

12 44 53

4

15 45B

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A16




z-score Method

1 0.7 -0.45 0.2 0.00 AS1141.11.1

3 0.5 -1.35 0.2 0.00 AS1141.11

4 0.5 -1.35 0.2 0.00 Q103B

6 0.7 -0.45 0.3 1.35 AS1141.11

7A 0.8 0.00 0.2 0.00 AS1141.11.1

7B 0.3 -2.25 0.3 1.35 AS1141.11.1

8 0.6 -0.90 0.3 1.35 Q103B

10 0.6 -0.90 0.1 -1.35 AS1141.11

11

0.6 -0.90 0.2 0.00



12 2.1 5.85 § 1.9 22.93 § AS1141.11

13A 1.3 2.25 0.4 2.70 AS1141.11

13B 1.3 2.25 0.2 0.00 AS1141.11

15 1.1 1.35 0.3 1.35 AS1141.11

16 0.7 -0.45 0.3 1.35 Q103B-1996

18 1.0 0.90 0.3 1.35 AS1141.11

19 0.9 0.45 0.2 0.00 AS1141.11.1

20 1.0 0.90 0.3 1.35 AS1141.11

21 0.8 0.00 0.2 0.00 AS1141.11.1

27 0.9 0.45 0.2 0.00 AS1141.11.1

28 0.7 -0.45 0.2 0.00 AS1141.11.1

29 0.8 0.00 0.4 2.70 AS1141.11 & 12

30 0.7 -0.45 0.2 0.00 #

31 0.9 0.45 0.2 0.00 AS1141.11.1

34 1.1 1.35 0.3 1.35 AS1141.11

35A 0.7 -0.45 0.2 0.00 AS1141.11

35B 1.4 2.70 0.6 5.40 § AS1141.11

36 0.4 -1.80 0.3 1.35 BS EN 933-1:1997

38 0.8 0.00 0.1 -1.35 AS1141.11

39 0.6 -0.90 0.2 0.00 AS1141.1

40 0.9 0.45 0.2 0.00 Q103B

42 1.1 1.35 0.3 1.35 AS1141.11.1

44 0.6 -0.90 0.2 0.00 Q103B

45A 1.1 1.35 0.4 2.70 AS1141.11.1

45B 0.8 0.00 0.3 1.35 AS1141.11.1

46 0.9 0.45 0.3 1.35 AS1141.11.1

47 0.9 0.45 0.2 0.00 AS1141.11.1

49 1 0.90 0 -2.70 AS1141.11.1

50 0.8 0.00 0.2 0.00 AS1141.11

A17




z-score Method

51 0.6 -0.90 0.2 0.00 AS1141.11

53 0.5 -1.35 0.1 -1.35 AS1141.12

54 0.7 -0.45 0.2 0.00 AS1141.11.1

56 0.7 -0.45 0.1 -1.35 AS1141.11.1

58 0.9 0.45 0.2 0.00 AS1141.11

60 1.1 1.35 0.4 2.70 AS1141.11.1

64 0.9 0.45 0.4 2.70 AS1141.11

67 0.9 0.45 0.3 1.35 AS1141.11

70 0.6 -0.90 0.2 0.00 1141.11.1

Number of

results 47

47

Median 0.80 0.20 Normalised

IQR 0.22

0.07

Robust CV 27.8% 37.1% Uncertainty (Median) 0.04 0.01 Minimum 0.3 0 Maximum 2.1 1.9

Range 1.8 1.9

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


A18

Particle Size Distribution 4.75mm (individual perce nt retained to nearest 0.1%) 4 53

8 10 11 39 70

1 16 28 30

35A 54 56

7A 29 38 45B

50

19 27 31 40 46 47 58 64 67

18 20 49

15 34 42 45A

60

13A

13B

35B 12

5144

6

3

36

7B

21-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A19

Particle Size Distribution 2.36mm (individual perce nt retained to nearest 0.1%)

53 56

1 3 4 7A 19 21 28 30 31 35A

39 40 44 50 51 54 58 70

6 7B 8 15 16 18 20 34 36 42 45B

46 67

13A

29 45A

60 6435

B

12

47

49

10 38

2711 13B

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A20



z-score Method

1 0.7 -0.45 AS1141.11.1

3 0.8 0.00 AS1141.11

4 0.6 -0.90 Q103B

6 0.3 -2.25 AS1141.11

7A 0.8 0.00 AS1141.11.1

7B 0.8 0.00 AS1141.11.1

8 # # Q103B

10 0.3 -2.25 AS1141.11

11

0.8 0.00

AS1141.11.1 (washed)

(except for the reporting of

results)

12 0.8 0.00 AS1141.11

13A 0.5 -1.35 AS1141.11

13B 0.5 -1.35 AS1141.11

15 0.9 0.45 AS1141.11

16 0.9 0.45 Q103B-1996

18 0.9 0.45 AS1141.11

19 0.8 0.00 AS1141.11.1

20 0.7 -0.45 AS1141.11

21 0.3 -2.25 AS1141.11.1

27 0.8 0.00 AS1141.11.1

28 1.0 0.90 AS1141.11.1

29 0.9 0.45 AS1141.11 &

12

30 0.0 -3.60 § #

31 0.9 0.45 AS1141.11.1

34 0.8 0.00 AS1141.11

35A 0.9 0.45 AS1141.11

35B 1.1 1.35 AS1141.11

36 1.5 3.15 § BS EN 933-

1:1997

38 0.2 -2.70 AS1141.11

39 0.9 0.45 AS1141.1

40 # # Q103B

42 0.7 -0.45 AS1141.11.1

44 # # Q103B

45A 1.0 0.90 AS1141.11.1

45B 1.2 1.80 AS1141.11.1

46 0.1 -3.15 § AS1141.11.1

47 0.8 0.00 AS1141.11.1

49 0 -3.60 § AS1141.11.1

50 0.8 0.00 AS1141.11

51 0.8 0.00 AS1141.11

53 0.8 0.00 AS1141.12



z-score Method

54 0.2 -2.70 AS1141.11.1

56 0.8 0.00 AS1141.11.1

58 0.8 0.00 AS1141.11

60 0.9 0.45 AS1141.11.1

64 0.9 0.45 AS1141.11

67 0.6 -0.90 AS1141.11

70 0.9 0.45 1141.11.1

Number of

results 44


IQR 0.22

Robust CV 27.8% Uncertainty

(Median) 0.04


Range 1.5


score ≥3.0 A “#’ indicates no response was provided.

A21

Particle Size Distribution 0.075mm (individual perc ent retained to nearest 0.1%)

38 54

6 10 21

13A

67

1 42

3 7A 7B 11 12 19 34 47 50 51 53 56 58

15 16 18 29 31 35A

39 60 64 70

28 45A

35B

45B

36

4

13B

20

464930

27

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A22



z-score Method

1 2.0 0.85 AS1141.12

3 1.6 -0.28 AS1141.12

4 1.4 -0.85 Q103A

6 1.9 0.57 AS1141.12

7A 1.6 -0.28 AS1141.12

7B 1.5 -0.57 AS1141.12

10 1.7 0.00 AS1141.12

11 1.8 0.28 AS1141.12

12 0.4 -3.69 § #

13A 20.5 53.39 § Sample not washed

13B 15.2 38.34 § Sample not washed

16 1.6 -0.28 AS1141.12

18 2.0 0.85 AS1141.12

19 1.8 0.28 AS1141.12

20 1.4 -0.85 AS1141.12

21 1.6 -0.28 AS1141.12

27 2.4 1.99 AS1141.12

28 2.0 0.85 AS1141.12

29 1.8 0.28 AS1141.11 & .12

30 2.2 1.42 #

31 1.7 0.00 AS1141.12

34 1.2 -1.42 AS1141.12

35A 1.9 0.57 #

35B 2.8 3.12 § #

36 1.5 -0.57 ASTM C117-04

38 1.4 -0.85 AS1141.12

39 1.6 -0.28 AS1141.12

42 1.2 -1.42 AS1141.12

45A 1.8 0.28 AS1141.12

45B 1.9 0.57 AS1141.12

46 2.4 1.99 AS1141.12

47 1.7 0.00 AS1141.12

49 1.6 -0.28 AS1141.12

50 2.0 0.85 #

53 1.8 0.28 AS1141.12

54 1.3 -1.14 AS1141.12

56 1.5 -0.57 AS1141.12

58 1.6 -0.28 AS1141.12

60 2.0 0.85 AS1141.12

64 2.5 2.27 AS1141.12



z-score Method

67 0.5 -3.41 § AS1141.11

70 1.7 0.00 1141.12

Number of

results 42


IQR 0.35


(Median) 0.07


Range 20.1



A23


42

54

4 20 38

7B

3

7A 21 39 49 58

10 31 47

11 19 29 45A

53

6 35A

45B 1 18 28 50 60

30

27 46

64

35B

13B

13A

70

12 67

34

16

36 56

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A24



z-score Method

3 21 0.88 AS1141.15

4 17 -0.29 Q201B

6 19 0.29 AS1141.15

7A 16 -0.59 AS1141.15

7B 13 -1.47 AS1141.15

8 19.0 0.29 Q201B

12 17.2 -0.24 AS1141.15

13A 13 -1.47 Q201A

13B 12 -1.77 Q201A

15 13 -1.47 AS1141.15

16 16 -0.59 Q201A

18 14.3 -1.09 AS1141.15

19 17 -0.29 AS1141.15

20 24 1.77 AS1141.15

27 18 0.00 AS1141.15

28 21 0.88 AS1141.15

29 21 0.88 AS1141.15

30 16.7 -0.38 #

31 16 -0.59 AS1141.15

34 19 0.29 AS1141.15

35A 16 -0.59 AS1141.15

35B 18 0.00 AS1141.15

36 20 0.59 BS812 - 103.1:1989

38 18 0.00 AS1141.15

39 23 1.47 AS1141.15

40 17 -0.29 Q201B

42 14 -1.18 AS1141.15

44 23.0 1.47 Q201B

45A 19 0.29 AS1141.15

45B 22 1.18 AS1141.15

46 22 1.18 AS1141.15

49 13 -1.47 AS1141.15

50 19 0.29 #

51 21 0.88 AS1141.15

53 19 0.29 AS1141.15

54 18 0.00 AS1141.15

56 19 0.29 AS1141.15

58 18 0.00 AS1141.15

60 22 1.18 AS1141.15

64 23.8 1.71 AS1141.15

67 18 0.00 AS1141.15

70 17 -0.29 1141.15

Note: A “#’ indicates no response was

provided.



IQR 3.4


(Median) 0.7

Minimum 12 Maximum 24

Range 12

A25


15 49

42 18

7A 16

30

4 40 70 12

27 35B

38 54 67

6 8 34 45A

50 53 56

36

3 28 29 51

45B

46 60

39 44

64 20

58

13B

7B 13A

19

31

35A

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A26

Average Least Dimension (ALD) 10mm and greater

(nearest 0.1mm) Laboratory


Method

3 8.4 0.67 Q202 (indirect method)

6 8.6 1.01 AS1141.20.3

7A 7.8 -0.34 AS1141.20.1

7B 7.6 -0.67 AS1141.20.1

8 8.3 0.51 Q202

10 8.0 0.00 AS1141.20.1

12 8.3 0.51 AS1141.20.1

13A 9.4 2.36 Q202 Indirect Method

13B 9.7 2.87 Q202 Indirect Method

15 7.5 -0.84 AS1141.20.1

16 10.3 3.88 § Q202-1978

18 7.7 -0.51 AS1141.20.1

19 8.3 0.51 AS1141.20.3

20 7.9 -0.17 AS1141.20.1

21 7.7 -0.51 AS1141.20.1

27 7.7 -0.51 AS1141.20.1

28 7.4 -1.01 AS1141.20.1

29 8.3 0.51 AS1141.20.3

30 5.7 -3.88 § #

31 8.2 0.34 AS1141.20.1

34 8.2 0.34 AS1141.20.1

35A 8.7 1.18 AS1141.20.1

35B 7.0 -1.69 AS1141.20.1

38 8.8 1.35 AS1141.20.1

39 7.2 -1.35 AS1141.20.1

40 8.4 0.67 Q202

42 7.4 -1.01 AS1141.20.1

44 8.5 0.84 Q202

45A 7.5 -0.84 AS1141.20.1

45B 7.6 -0.67 AS1141.20.1

46 9.2 2.02 AS1141.20.1

47 7.7 -0.51 AS1141.20.1

49 7.9 -0.17 AS1141.20.1

50 7.7 -0.51 AS1141.20.1

53 7.6 -0.67 AS1141.20.1

54 8.4 0.67 AS1141.20.3

56 8.0 0.00 AS1141.20.1

60 7.6 -0.67 AS1141.20.1

64 8.4 0.67 AS1141.20.1

70 8.6 1.01 Q202 Indirect Method





IQR 0.59


(Median) 0.12


Range 4.6

A27

Average Least Dimension (ALD) 10mm and greater

(nearest 0.1mm)28 42

15

45A 7B 45

B 18 21 47 50 7A

20 49

10 56

34

8 12 19 29

3 40 54 64

44

6 70

35A 38

46

13A

13B

16

6053

27

39

35B

30

31

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A28

Particle Shape by Proportional Calliper (nearest 1%) 2:1 ratio


z-score Method

3 14 -1.23 AS1141.14

6 15 -1.04 AS1141.14

7B 22 0.31 AS1141.14

10 21 0.12 AS1141.14

11 23 0.50 AS1141.14

15 8.9 -2.22 AS1141.14

16 17 -0.66 Q213-1978

18 21.5 0.21 AS1141.14

19 18 -0.46 AS1141.14

20 33 2.43 AS1141.14

21 27 1.27 AS1141.14

27 20 -0.08 AS1141.14

28 24 0.69 AS1141.14

29 32 2.24 AS1141.14

30 11.7 -1.68 #

31 16 -0.85 AS1141.14

34 14 -1.23 AS1141.14

35A 20.4 0.00 AS1141.14

35B 17.0 -0.66 AS1141.14

38 22 0.31 AS1141.14

39 17 -0.66 AS1141.14

42 9 -2.20 AS1141.14

45A 38 3.39 § AS1141.14

45B 24 0.69 AS1141.14

46 18 -0.46 AS1141.14

47 24 0.69 AS1141.14

49 22 0.31 AS1141.14

50 18 -0.46 AS1141.14

54 6 -2.78 AS1141.14

56 29 1.66 AS1141.14

60 20 -0.08 AS1141.14

64 22.9 0.48 AS1141.14

70 28.0 1.46 1141.14



IQR 5.19


(Median) 1.13

Minimum 6

Maximum 38.0

Range 32.0



A29

Particle Shape by Proportional Calliper(nearest 1%)

2:1 ratio

30

3 34

6 31

16

19 46

27 60

35A

10 18 7B 38

64 11

28 45B

47

21

70

56

29

20

45A

49

54

15 42

50

35B 39

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A30

Bulk Density of Aggregate (Uncompacted only)

(nearest 0.01t/m 3) Laboratory


Method

3 1.42 -0.54 AS1141.4

6 1.44 0.00 AS1141.4

7A 1.46 0.54 AS1141.4

7B 1.47 0.81 AS1141.4

8 1.45 0.27 Q221A

10 1.48 1.08 AS1141.4

11 1.44 0.00 AS1141.4

15 1.55 2.97 AS1141.4

16 1.47 0.81 Q221A

18 1.377 -1.70 AS1141.4 Part 7.1

19 1.40 -1.08 AS1141.4 (7.1)

20 1.47 0.81 AS1141.4

27 1.41 -0.81 AS1141.4

28 1.43 -0.27 AS1141.4

29 1.43 -0.27 AS1141.4

30 1.44 0.00 #

31 1.40 -1.08 AS1141.4 (Part 7.1)

34 1.47 0.81 AS1141.4

35A 1.48 1.08 AS1141.4

35B 1.50 1.62 AS1141.4

36 1.43 -0.27 BS812.2:1995 Test 6

38 1.39 -1.35 AS1141.4

39 1.40 -1.08 AS1141.4

42 1.36 -2.16 AS1141.4

44 1.49 1.35 Q221A

45A 1.42 -0.54 AS1141.4

45B 1.42 -0.54 AS1141.4

46 1.42 -0.54 AS1141.4

47 1.45 0.27 AS1141.4.7.1

49 1.44 0.00 AS1141.4

50 1.48 1.08 AS1141.4 (7.1)

51 1.45 0.27 AS1141.4 Loose

54 1.41 -0.81 AS1141.4 (7.1)

56 1.42 -0.54 AS1141.4

60 1.45 0.27 AS1141.4 Part 7.1

64 1.47 0.81 AS1141.4


(nearest 0.01t/m 3) Laboratory


Method

67 1.42 -0.54 AS1141.4

70 1.88 11.87 § 1141.4

Number of

results 38


IQR 0.037


(Median) 0.008

Minimum 1.36

Maximum 1.88

Range 0.52



A31


(nearest 0.01t/m 3)

19 31 39

27 54

3 46 56

28 29 36

6 11 30 49

47 51 60

7A

7B 16 20 34 64

10 35A

50

44

35B

15 70

45B

45A 67

38

18

42

8

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

A32

Aggregate Crushing Value 400kN (nearest 0.1%)


z-score Method

3 13.0 -0.34 AS1141.21

4 14.4 1.26 Q204A

6 12.8 -0.57 AS1141.21

7A 12.0 -1.49 AS1141.21

7B 13.2 -0.11 AS1141.21

8 14.4 1.26 Q204A

15 14.6 1.49 AS1141.21

16 11.0 -2.64 Q204A

18 13.3 0.00 AS1141.21

20 14.4 1.26 AS1141.21

21 12.1 -1.38 AS1141.21

27 13.9 0.69 AS1141.21

29 13.4 0.11 AS1141.21

30 13.4 0.11 #

31 12.7 -0.69 AS1141.21

34 14.1 0.92 AS1141.21

35A 13.0 -0.34 AS1141.21

35B 13.6 0.34 AS1141.21

36 11.8 -1.72 BS812.110: 1990

39 15.0 1.95 AS1141.21

42 12.0 -1.49 AS1141.21

44 13.8 0.57 Q204A

45A 12.6 -0.80 AS1141.21

45B 13.3 0.00 AS1141.21

49 13.0 -0.34 AS1141.21

54 13.7 0.46 AS1141.21

60 13.3 0.00 AS1141.21

64 14.8 1.72 AS1141.22

Number of

results 28


IQR 0.87

Robust CV 6.5% Uncertainty (Median) 0.21 Minimum 11.0 Maximum 15.0

Range 4.0

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

A33

Aggregate Crushing Value 400kN (nearest 0.1%)

42 21

45A 31

6

3 7B

18 60 29 30

35B

54 44 27

4 8 20

15

64

39

34

16

36

7A

45B

35A 49

-3

-2

-1

0

1

2

3

Laboratory Code

z-sc

ore

APPENDIX B

Homogeneity Testing

B1

Aggregate Round 9 – Proficiency Testing Homogeneity Results

Lab No.

Individual Percent Retained (AS Sieve Size in mm) – AS1141.11

AS1141.11

1%

13.2mm 9.5mm 6.7mm 4.75mm 2.36mm 0.075mm 0.075mm A.C

.V A

S11

41.2

1

Fla

kine

ss In

dex

(%)

ALD

AS

1141

.20.

1

Par

ticle

Sha

pe

(%)

(2:1

rat

io)

App

aren

t Par

ticle

D

ensi

ty (

t/m3)

Par

ticle

Den

sity

D

ry (

t/m3)

SS

D P

artic

le

Den

sity

(t/m

3)

Wat

er A

bsor

ptio

n (%

)

Bul

k D

ensi

ty

(t/m

3)

(unc

ompa

cted

)

806 17.0 60.0 19.8 0.6 0.1 0.8 1.6 13.5 14.7 7.7 21.6 2.742 2.690 2.709 0.700 1.382

807 16.7 58.4 21.5 0.8 0.1 0.8 1.6 13.5 12.8 7.7 22.9 2.744 2.689 2.709 0.750 1.384

808 17.1 58.8 20.8 0.8 0.3 0.8 1.3 13.2 13.7 7.8 20.6 2.743 2.689 2.708 0.730 1.383

809 16.3 60.2 19.8 0.7 0.4 0.8 1.8 13.6 12.2 7.6 21.4 2.741 2.707 2.719 0.470 1.382

810 16.1 60.0 20.3 0.9 0.3 0.9 1.3 13.3 14.7 7.7 20.7 2.736 2.681 2.701 0.800 1.384

811 16.5 59.5 19.8 1.0 0.4 0.8 2.0 13.4 15.7 7.6 21.7 2.739 2.688 2.706 0.700 1.385

812 16.4 60.2 19.5 1.0 0.4 0.9 1.5 13.5 14.4 7.8 21.4 2.745 2.686 2.707 0.800 1.380

813 16.9 59.2 20.9 0.8 0.2 0.7 1.3 12.9 11.8 7.7 20.9 2.743 2.697 2.714 0.600 1.384

814 17.3 59.6 19.7 1.0 0.3 0.8 1.3 13.6 13.4 7.6 22.0 2.742 2.691 2.710 0.700 1.376

815 16.4 60.7 19.5 0.8 0.3 0.7 1.5 13.2 14.4 7.6 21.1 2.739 2.691 2.709 0.600 1.383

Mean 16.7 59.7 20.2 0.8 0.3 0.8 1.5 13.4 13.8 7.7 21.4 2.741 2.691 2.709 0.685 1.382

SD 0.39 0.70 0.69 0.13 0.11 0.07 0.24 0.22 1.23 0.08 0.68 0.003 0.007 0.005 0.102 0.003

CV (%) 0.023 0.012 0.034 0.161 0.405 0.083 0.158 0.017 0.089 0.010 0.032 0.001 0.003 0.002 0.149 0.002

Low value 16.1 58.4 19.5 0.6 0.1 0.7 1.3 12.9 11.8 7.6 20.6 2.736 2.681 2.701 0.47 1.376

High value 17.3 60.7 21.5 1 0.4 0.9 2 13.6 15.7 7.8 22.9 2.745 2.707 2.719 0.8 1.385

APPENDIX C

Documentation

C1

Page 1 of 1

PROFICIENCY TESTING AUSTRALIA

AGGREGATES (ROUND 9) PROFICIENCY TESTING PROGRAM

INSTRUCTIONS TO PARTICIPANTS To ensure that results from this program can be analysed properly, participants are asked to adhere carefully to the following instructions. 1. One 18-20 Kg sample of aggregate has been supplied to each laboratory. 2. Before any testing, mix the sample and then cone and quarter or rifle thoroughly

using the whole sample. 3. The following determinations are to be performed on the sample:

• Particle density and water absorption of course aggregate –AS1141.6.1 • Particle Size Distribution – AS1141.11 • Material Finer than 0.075mm – AS1141.12 • Flakiness index – AS1141.15 • ALD Direct measurement 10mm and greater – AS1141.20.1 • Particle Shape by proportional caliper – AS1141.14 (2:1 ratio only) • Bulk Density of Aggregate – AS1141.4 (Part 7.1 Uncompacted only) • Aggregate crushing value 400kN – AS1141.21

4. Laboratories routinely performing these tests to other methods are required to follow

their normal method and note this on the results sheet. 5. The results for all determinations are to be recorded on the results sheet to the

accuracy and reporting basis indicated on the results sheet. The method used is also to be recorded.

6. Testing may commence as soon as the sample is received. All laboratories must

return the results sheet no later than 7 November 2011 to: Laura Galbraith Proficiency Testing Australia PO Box 7507 SILVERWATER NSW 2128 Phone: 02 9736 8397 Fax: 02 9743 6664 Email: [email protected]

C2

Page 1 of 2

PROFICIENCY TESTING AUSTRALIA

AGGREGATES (ROUND 9) PROFICIENCY TESTING PROGRAM RESULTS SHEET

Lab Code

TEST (report to) Result Method

Particle density and water absorption of course

aggregate Apparent particle density

(nearest 0.01 t/m3)

Particle density on a dry basis (nearest 0.01 t/m3)

Particle density on a

saturated-surface-dry basis (nearest 0.01 t/m3)

Water absorption (nearest 0.1%)

Particle Size Distribution (INDIVIDUAL PERCENT

RETAINED to nearest 0.1%)

26.5mm

19.0mm

13.2mm

9.5mm

6.7mm

4.75mm

2.36mm

0.075mm

Passing 0.075mm by washing (nearest 0.1%)


«Lab_Code»

C3

Page 2 of 52

Average Least Dimension

(ALD) 10mm and greater (nearest 0.1mm)

Particle shape by proportional

calliper (nearest 1%)

2:1 Ratio only


(nearest 0.01t/m 3)

Aggregate crushing value 400kN (nearest 0.1%)

Date of tests: Signature: Please return by 7 November 2011 to: Laura Galbraith Proficiency Testing Australia

Fax: 02 9743 6664 Email: [email protected]

End of report