TY - JOUR
T1 - Influence of engineering properties of porous asphalt concrete on long-term performance
AU - Chen, Jian Shiuh
AU - Lee, Cheng Te
AU - Lin, Yen Yu
N1 - Funding Information:
The authors are very grateful to the Ministry of Science and Technology (101-2211-E-006-214-MY3) for providing financial supports to complete this project.
Publisher Copyright:
© 2016 American Society of Civil Engineers.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - Porous asphalt concrete (PAC) is a particular type of asphalt mixture that has a high content of air voids that is generated because of an open-graded design. The objective of the study is to investigate the effect of the engineering properties of PAC on field performance. Three binders were selected for evaluation: conventional asphalt, polymer-modified asphalt, and highly modified asphalt. Comprehensive laboratory tests, including permeability, resistance to draindown, resistance to disintegration, resistance to rutting, and resistance to indirect traction, were conducted to evaluate the engineering properties of PAC mixtures. Stiff binders were shown to resist against particle loss and to enhance durability of PAC mixes through thick asphalt binder films. According to the laboratory results, a test road was constructed to monitor the performance of PAC pavements with aggregates having a nominal maximum size of 19 mm. Surveys for pavement performance were conducted at scheduled intervals. Test results indicated that the use of polymer-modified binders in surface courses was technically superior to that of traditional asphalt. There were indications of drainage improvement by replacement of conventional asphalt with polymer-modified binders according to measurements in the field. Porous asphalt-wearing layers were shown to maintain drainability for more than 8 years in this study. The engineering properties of PAC mixes obtained from the laboratory corresponded well with pavement performance evaluated in the field.
AB - Porous asphalt concrete (PAC) is a particular type of asphalt mixture that has a high content of air voids that is generated because of an open-graded design. The objective of the study is to investigate the effect of the engineering properties of PAC on field performance. Three binders were selected for evaluation: conventional asphalt, polymer-modified asphalt, and highly modified asphalt. Comprehensive laboratory tests, including permeability, resistance to draindown, resistance to disintegration, resistance to rutting, and resistance to indirect traction, were conducted to evaluate the engineering properties of PAC mixtures. Stiff binders were shown to resist against particle loss and to enhance durability of PAC mixes through thick asphalt binder films. According to the laboratory results, a test road was constructed to monitor the performance of PAC pavements with aggregates having a nominal maximum size of 19 mm. Surveys for pavement performance were conducted at scheduled intervals. Test results indicated that the use of polymer-modified binders in surface courses was technically superior to that of traditional asphalt. There were indications of drainage improvement by replacement of conventional asphalt with polymer-modified binders according to measurements in the field. Porous asphalt-wearing layers were shown to maintain drainability for more than 8 years in this study. The engineering properties of PAC mixes obtained from the laboratory corresponded well with pavement performance evaluated in the field.
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U2 - 10.1061/(ASCE)MT.1943-5533.0001768
DO - 10.1061/(ASCE)MT.1943-5533.0001768
M3 - Article
AN - SCOPUS:85015832628
SN - 0899-1561
VL - 29
JO - Journal of Materials in Civil Engineering
JF - Journal of Materials in Civil Engineering
IS - 4
M1 - 04016246
ER -