Effect of environmental exposure on the cooling rate of asphalt mixtures

Badruddin, I. and Abdul Hassan, N. and Mahmud, M. Z. H. and Ismail, S. and Putra Jaya, Ramadhansyah and Oleiwi Aletba, S. R. and Mohd Rosli, Hainin (2021) Effect of environmental exposure on the cooling rate of asphalt mixtures. In: IOP Conference Series: Earth and Environmental Science; 4th National Colloquium on Wind and Earthquake Engineering, 16-17 October 2020 , Putrajaya, Malaysia. pp. 1-9., 682 (012072). ISSN 1755-1315

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Temperature is one of the major factors that affect the compactability and mechanical performance of asphalt pavement. Therefore, the cooling rate variability of asphalt due to various surrounding conditions and aggregate surface areas is crucial to achieving proper compaction. This study focused on the effect of environmental exposure on the cooling rate and available time for compaction of the asphalt mixtures (AC10 and AC14). Several factors, such as base and ambient temperatures, daytime and nighttime, solar flux, and wind speed, were considered in the evaluation of the cooling curve. A few loose samples were prepared and grouped as covered (with canvas) and uncovered during the monitoring process. The time and temperature of both samples were monitored during the day and night, starting after the mixing process and ending at 80 °C. Results reveal that the cooling rate of asphalt mixtures is undoubtedly affected by the surrounding factors. The use of canvas and coarse aggregate gradation could retain the heat and minimize the wind and solar flux effects, thus increasing the available time for compaction or lengthening the cooling time. In addition, the cooling rate tends to increase during nighttime compared with daytime exposure.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Aggregates; Compaction; Cooling; Earthquake engineering; Engineering geology; Geophysics; Mixtures; Phase diagrams; Wind
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TE Highway engineering. Roads and pavements
Faculty/Division: College of Engineering
Depositing User: PM Dr. Ramdhansyah Putra Jaya
Date Deposited: 11 Mar 2022 03:43
Last Modified: 11 Mar 2022 03:43
URI: http://umpir.ump.edu.my/id/eprint/30829
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