MoDOT pavement preservation research program volume V, site-specific pavement condition assessment.
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2015-11-01
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Abstract:The overall objective of Task 4 was to thoroughly assess the cost-effectiveness and utility of selected non-invasive technologies as
applicable to MoDOT roadways. Non-invasive imaging technologies investigated in this project were Ultrasonic Surface Waves
(USW), Impact Echo (IE), Ground-coupled Ground Penetrating Radar (GPR) (400 MHz and 1500 MHz antennae), Electrical
Resistivity Tomography (ERT), Multichannel Analyses of Surface Waves (MASW), Falling Weight Deflectometer (FWD),
Rolling Dynamic Deflectometer (RDD), and Air-launched Ground Penetrating Radar (GPR). USW, IE, ground coupled GPR
(1500 MHz antennae), ERT, MASW, FWD, and RDD were used to acquire non-invasive data along eight designated project-level
roadways. GPR (400 MHz) and air-launched GPR were used to acquire non-invasive data along two designated network-level
roadways. High-frequency air-launched GPR is recommended for primary consideration for network-level investigations, and is
recommended along all segments of pavement where ARAN data are collected. This data can be used to spot developing problems
where further project-level investigations may be needed. USW, GPR, and FWD techniques are recommended for primary
consideration for project-level investigations, where in situ properties of the pavement are needed, or for quality assurance
purposes. At its current stage of development, RDD is recommended for secondary consideration for project-level investigations.
ERT is recommended for primary consideration of the base, and MASW is recommended for secondary consideration, or where
engineering properties of the base material are desired.
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