Freeze-Thaw Splitting Strength Analysis of PAC Based on the Gray-Markov Model | Zendy

Baoyang Yu | Zendy; Zongguang Sun | Zendy; Lin Qi | Zendy

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Freeze-Thaw Splitting Strength Analysis of PAC Based on the Gray-Markov Model

Author(s) -

Baoyang Yu,

Zongguang Sun,

Lin Qi

Publication year - 2021

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2021/9954504

Subject(s) - materials science , gray (unit) , markov chain , chemical engineering , biological system , composite material , statistics , mathematics , engineering , medicine , biology , radiology

In this study, a freeze-thaw split test was carried out to simulate the frost-heaving behavior of permeable asphalt concrete (PAC). Furthermore, the water stability problems caused by spalling and loosening were studied. Through a comparative analysis of the freeze-thaw split ratio of porosities of 19%, 21%, and 24%, the PAC porosity with excellent water stability was determined to be 19–21%. Scanning electron microscopy (SEM) images of PAC with the three porosity values after repeated freezing and thawing verified that the porosities were greater than 24% and the asphalt film peeling area was the largest, resulting in the rapid decline of the PAC freeze-thaw split ratio. The Gray-Markov model was used to predict the water stability of the mixture with a porosity of 21%. Based on the results, a Gray-Markov method for evaluating the PAC water stability in seasonally frozen areas was introduced.

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