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Pavement Quality Data Collection and

Analysis

MUHAMMAD ZULFIKRI B. MOHD

ZAKY(4071044351)

Correlation between Pavement Quality

Indicator 301(PQI) and Conventional Method

(Coring Method)


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Background Of Study

Currently, most paving contractors determine

density of asphalt pavements by the collection

of core samples. It takes more time to know

the result of quality pavement.

By using PQI 301, the contractors just need

the in-situ test and take just around 3 second

to know the result about quality of asphalt


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A study is to evaluate and compare betweennonnuclear density devices, the PavementQuality Indicator (PQI) Model 301 and coring

method. This study needs testing and analyses of

certain projects to determine averagecoefficients for the relationships betweenuncorrected gauge measurements and coredensities.


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Problem Of Statement

During construction of hot-mix asphaltpavements, density measurements are takenat various stages to monitor the effect of the

rollers and ensure proper compaction. The most commonly used method for

measuring density is coring. The coringmethod requires licensing, training, andspecialized storage due to the samples withinthe equipment.


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Objective Of The Study

To compare the densitybetween this 2

method(cores and PQI)

To compare the tests result with the JKR

requirement.

To obtain the optimum density and

percentage of compaction with comparison

JKR requirement.


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Scope Of Study

First, a literature search was conducted to assesswhat information was currently available on this

topic.

The data collected on the test sections by each

process and the participating PQI equipment and

then evaluated in a statistical analysis.

The main focus of the data collected on the test

sections was the pavement condition informationand the quality of the data reading, as these were

the main functions performed by the PQI

equipment.


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Area Of Study

Malaysia East

Jalan Karak Lama

BentongRaub

Tranum Bypass (Raub)

Malaysia South

Lebuh AMJ (MerlimauMuar)


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Research MethodologySite Selection

Pavement Testing

Pavement Quality

Indicators 301

(PQI) Coring Method

In-situ test

Analysis and

Calculation

Analysis and

Calculation

Density &

Percentage

Compaction

Density & Percentage

Compaction data refer

mix design from quarry

Correlation

between PQI and

Corin Method

Fulfills the standard re uirements and ass allthe tests

Test for SSD

Conclusion and Recommendations

Compare the

result with

JKR

specification

Compare the

result with

JKR

specification

Analysis and

Calculation

Analysis and

Calculation


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Pavement Quality Indicators (PQI 301)

PQI 301 is a PavementQuality Indicator designedand built to take quick,

accurate measurements ofhot mix asphalt density.

PQI 301 takes accuratedensity readings in threeseconds.


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Operation Of The PQI


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The Pavement Quality Indicator is designed with

several useful modes of operation.

Each mode of operation is accessed through the

keypad controls.

The number, letter and arrow keys have several

functions. The immediate function is shown by

the text in the display panel. Pressing a key causes the PQI to beep indicating

that the keystroke has been entered.


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Display Panel PQI 301

Functions:1)Density

2)%Compaction

3)Temperature Sensing

4) Moisture Sensing


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Operational SpecificationsPQI 301

Segregation: Identifies variations in material densityassociated with segregation.

Continuous: Instantaneous density, temperature and

moisture readings.

Average: Averages five (5) readings and stores data

including date and time. Stores 99 records.

Single: Allows the operator to collect data thenmanually record data off the material under test.

Reading time three (3) seconds.


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Coring Method

The standard test procedure is used for collecting

samples of pavement.

Samples of pavement collected using the coring

method may be used to evaluate variouscharacteristics of pavement for construction

quality control testing, quality assurance testing

and product acceptance testing. Core samples may also be used for research

testing purposes.


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Coring Method(cont)

The standard core sample diameter for thistest procedure will be 101.6 mm or 152.4 mm.

Generally, the maximum thickness of

pavement to be sampled will be 250 mm.


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Analysis And CalculationTHICK:55

MTD:2350

TIME TEMP H20 DENSITY COMPACTION%

9.00 am 28 6.8 2192 93.3%

5.7 2161 92.0

7.1 2181 92.8

6.3 2188 93.1

6.8 2198 93.5

2184

Samples of raw data for PQI


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Km : 19070-

19440

TIME POINT DENSITY COMPACTION4.00 pm 1 2343 99.9%

2 2392 102.0

3 2403 102.4

4 2282 97.3

5 2323 99.0

2348.6

rejuvenator 0.5 %

rejuvenator 0.3 %

D.O.T : 3 / 9 / 2010

Thickness : 50mm

Slow-Lane = LHS

MTD : 2346 kg

Km : 18640 -

19040

Samples of raw data for PQI


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Sample data for coring method

CORING LOCATION : TRANUM BYPASS DATE LAID:

TYPE OF MIX : DATE OF CORIN :

DATE OF TESTIN :

Thickness Bulk Volume (cc) Bulk Density Marshall Density Average Density

ChainageDestination

Form(mm) In Air SSD In Water (cc) (gm/cc) (gm/cc) (%)

(1) (2) (3) (4) (5) 6 7 (8) = (6) - (7) (9) = (5) / (8) (10) (11) = (9)/(10) (11)

7 2.241 44.0 706.6 710.6 391.3 319.3 2.213 2.328 95.1

8 2.200 37.0 577.1 579.5 314.8 264.7 2.180 2.328 93.7

9 2.205 52.0 865.6 869.3 473.1 396.2 2.185 2.328 93.8

10 2.224 37.0 577.9 581.1 318.1 263.0 2.197 2.328 94.4

SAMPLE NO

CORING LOCATION WEIGHT (mm)

Core Density

26/10/2010

27/10/2010


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Calculation

For calculation section, it refers to coring

sample and doing analysis in laboratory and

calculates all the collected data.

In this study, we use CDM/MARSHALL TEST

calculation to determine the density of coring

samples.

Also use Bulk Specific Gravity (ASTM D2726) andMaximum Theoretical Specific Gravity (ASTM D2041)


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Expected Outcome

This expected outcome can conclude by this way:

The correlation by PQIs method and coringmethod by referring raw data collection and

analysis in laboratory. Comparison between density reading for PQIs

and density that we will get by laboratoryprocess.

Also comparison the percentage compaction byboth methods that will achieve the objective ofthis study limitations.


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THE END

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