A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Comprehensive Evaluation of Environmental Conditioning System. Evaluation of ECS for Predicting Damage Susceptibility of HMAC
Many highway agencies face the problem of premature failure of asphalt concrete pavements due to moisture damage. Various laboratory tests have been used to predict the moisture susceptibility of asphalt concrete mixtures. Unfortunately, none of the available laboratory tests are able to accurately discriminate between well and poor performing mixes; that is, the laboratory test results do not necessarily correlate well with the field performance. Recent studies performed under the Strategic Highway Research Program (SHRP) indicate that the environmental conditioning system (ECS) is a device that better simulates the field conditions. Based on the initial studies, the ECS seemed to be able to distinguish moisture susceptible mixes. A recent study conducted by the Colorado DOT suggested that the ECS device and testing procedure needed further evaluation before it could be incorporated in the routine use. A study was undertaken at the University of Texas at El Paso (UTEP) to evaluate the ECS. Based on the results from the study, the ECS needs improvements both in terms of conditioning of asphalt concrete mixture, as well as, resilient modulus test setup. Specifically, the resilient modulus test setup of the ECS needs improvement in the precision and accuracy of the measurements.
Comprehensive Evaluation of Environmental Conditioning System. Evaluation of ECS for Predicting Damage Susceptibility of HMAC
Many highway agencies face the problem of premature failure of asphalt concrete pavements due to moisture damage. Various laboratory tests have been used to predict the moisture susceptibility of asphalt concrete mixtures. Unfortunately, none of the available laboratory tests are able to accurately discriminate between well and poor performing mixes; that is, the laboratory test results do not necessarily correlate well with the field performance. Recent studies performed under the Strategic Highway Research Program (SHRP) indicate that the environmental conditioning system (ECS) is a device that better simulates the field conditions. Based on the initial studies, the ECS seemed to be able to distinguish moisture susceptible mixes. A recent study conducted by the Colorado DOT suggested that the ECS device and testing procedure needed further evaluation before it could be incorporated in the routine use. A study was undertaken at the University of Texas at El Paso (UTEP) to evaluate the ECS. Based on the results from the study, the ECS needs improvements both in terms of conditioning of asphalt concrete mixture, as well as, resilient modulus test setup. Specifically, the resilient modulus test setup of the ECS needs improvement in the precision and accuracy of the measurements.
Comprehensive Evaluation of Environmental Conditioning System. Evaluation of ECS for Predicting Damage Susceptibility of HMAC
V. Tandon (author) / N. Vemuri (author) / S. Nazarian (author)
1996
32 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Road Transportation , Transportation , Transportation & Traffic Planning , Hot mix pavements , Moisture content , Test methods , Flexible pavements , Asphalts , Highway maintenance , Concretes , Permeability , Resilient modulus , Performance evaluation
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