A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Laboratory Evaluation of Porous Asphalt Mixtures for Use in High-Traffic-Volume Roads
As a best practice for stormwater management, porous asphalt (PA) pavements are hydrologically designed for low-volume roads, parking lots, shoulders, and walkways. The application on high-traffic roadways require a structural design specific to PA pavements. This study aims to gather the inputs required for the structural design of long-lasting porous asphalt pavements for high-traffic-volume roads. Aggregates were procured from three sources (or suppliers) in New Jersey (NJ). A PG 76–22 binder and loose cellulose fiber were used for all the mixtures prepared for testing. The prepared mixtures were evaluated for air voids, durability, permeability, moisture susceptibility, and binder draindown. The unconfined dynamic modulus, rut resistance, and fatigue performance of the mixtures were also determined in the laboratory. Furthermore, this chapter attempts to study the different testing protocols used in the existing literature and compare them with the results from the laboratory investigation. This study identified that it is imperative to standardize the testing protocols while adopting this technology for high-traffic roadways. The confined dynamic modulus increased at high temperatures. The rut depths of the porous asphalt mixtures were 3 mm, 9 mm, and 4 mm, respectively, where the maximum allowable rut depth was 5 mm for the high-traffic-volume roadways. The respective CTindex values of the mixtures were 494, 877, and 548. Due to the high variability of these results, it is difficult to provide a reasonable interpretation.
Laboratory Evaluation of Porous Asphalt Mixtures for Use in High-Traffic-Volume Roads
As a best practice for stormwater management, porous asphalt (PA) pavements are hydrologically designed for low-volume roads, parking lots, shoulders, and walkways. The application on high-traffic roadways require a structural design specific to PA pavements. This study aims to gather the inputs required for the structural design of long-lasting porous asphalt pavements for high-traffic-volume roads. Aggregates were procured from three sources (or suppliers) in New Jersey (NJ). A PG 76–22 binder and loose cellulose fiber were used for all the mixtures prepared for testing. The prepared mixtures were evaluated for air voids, durability, permeability, moisture susceptibility, and binder draindown. The unconfined dynamic modulus, rut resistance, and fatigue performance of the mixtures were also determined in the laboratory. Furthermore, this chapter attempts to study the different testing protocols used in the existing literature and compare them with the results from the laboratory investigation. This study identified that it is imperative to standardize the testing protocols while adopting this technology for high-traffic roadways. The confined dynamic modulus increased at high temperatures. The rut depths of the porous asphalt mixtures were 3 mm, 9 mm, and 4 mm, respectively, where the maximum allowable rut depth was 5 mm for the high-traffic-volume roadways. The respective CTindex values of the mixtures were 494, 877, and 548. Due to the high variability of these results, it is difficult to provide a reasonable interpretation.
Laboratory Evaluation of Porous Asphalt Mixtures for Use in High-Traffic-Volume Roads
Carter, Alan (editor) / Vasconcelos, Kamilla (editor) / Dave, Eshan (editor) / Eleyedath, Abhary (author) / Khan, Ali Raza (author) / Siddique, Abu Bakar Md (author) / Ali, Ayman (author) / Mehta, Yusuf (author)
International Symposium on Asphalt Pavement & Environment ; 2024 ; Montreal, QC, Canada
14th International Conference on Asphalt Pavements ISAP2024 Montreal ; Chapter: 107 ; 645-651
2024-12-24
7 pages
Article/Chapter (Book)
Electronic Resource
English
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