Abstract
This paper focuses on the freeze-thaw cycles (F-T cycles) resistance of porous asphalt mixture (PAM) with different air voids in order to explore the gradation of the PAM suitable for seasonal freezing regions. Three sets of PAMs with 18%, 21%, and 25% air voids were designed. After 0–20 F-T cycles, the effects of F-T cycles on the performance degradation of three groups of PAMs were studied by performing a low-temperature splitting test with acoustic emission technology, a normal temperature splitting test, a compression test, a Cantabro particle loss test, and a dynamic creep test. The results show that the damage process of PAM caused by multiple F-T cycles could be more clearly defined by acoustic emission parameters. In addition, the larger the air void, the smaller its indirect tensile strength and compression strength, and the worse its particle loss resistance and high-temperature stability, which made the adverse effect of F-T cycles more significant. Therefore, the air void of PAM used in seasonal freezing regions is suggested to be less than 21%.
Highlights
Green, ecological, and sustainable development methods are gradually being respected by people all over the world [1,2,3]
In order to increase the viscosity of the binder, a 10% waste rubber powder was added to the porous asphalt mixture (PAM) using a dry process, and it was produced in Jilin Province
After 20 F-T cycles, the Cantabro particle loss rate for the PAM-18 increased from 3.01% to 4.97%
Summary
Ecological, and sustainable development methods are gradually being respected by people all over the world [1,2,3]. Permeable asphalt pavement has a large void structure, which can improve the safety of driving on rainy days, accelerate the natural water cycle, and reduce the adverse impact of road engineering on the natural environment. Northeast of China is a typical seasonal frozen region It is hot and rainy in summer in Changchun city, Jilin province, and the daily average maximum temperature in June and July can reach 28 and 29 ◦C respectively. For northeast regions of China with special climatic conditions, how to determine the appropriate gradation of PAM is an urgent problem The purpose was to study the effect of F-T cycles on three groups of PAMs with different air voids through the above tests, and to study the PAMs suitable for seasonal freezing regions from the perspective of frost resistance
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