Freeze-Thaw Splitting Strength Analysis of PAC Based on the Gray-Markov Model
| Autor: | Zongguang Sun, Lin Qi, Baoyang Yu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Article Subject business.industry Scanning electron microscope education General Engineering Markov model Spall humanities Asphalt concrete Asphalt TA401-492 General Materials Science Composite material Porosity business Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2021 (2021) |
| ISSN: | 1687-8442 1687-8434 |
| DOI: | 10.1155/2021/9954504 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |