United States Department of Transportation
i
Evaluation of non-destructive technologies for construction quality control of HMA and PCC pavements in Louisiana : [research project capsule].
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2009-07-01
[PDF-176.63 KB]
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Abstract:Current roadway quality control and quality acceptance (QC/QA) procedures
for Louisiana include coring for thickness, density, and air void checks in hot
mix asphalt (HMA) pavements and thickness and compressive strength for
Portland cement concrete (PCC) pavements. In-situ devices, such as the
Light Falling Weight Deflectometer (LWD) and Portable Seismic Pavement
Analyzer (PSPA), are able to measure the modulus of the surface layer of a
pavement quickly. These devices are non-destructive and portable, which
allow for fast in-place determination of pavement properties, resulting in a
sizable data set in a small amount of time. This would give the Department a
tool for checking the consistency of in-place pavements and supplementing
current QC/QA practices. This research will determine the ruggedness and
consistency of each device as well as develop an operating procedure for
running tests. Also, it will compare in-situ modulus values and mechanical
properties measured in the lab. This research is intended to serve as a
guide for further research regarding the LWD and PSPA.
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