Influence of asphalt chemical composition on moisture susceptibility of asphalt mixtures

To evaluate sensitivity of moisture damage resistance with chemical composition of asphalt, the adhesion energy, debonding energy as well as compatibility ratio of 69 asphalt-aggregate combinations were calculated with thermodynamical models. Pearson correlation analysis and regression analysis were...

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Published inPetroleum science and technology Vol. 36; no. 16; pp. 1258 - 1264
Main Authors Liu, Xiang, Zhang, Zhengwei, Yang, Xiaolong, Liu, Zhuangzhuang
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 18.08.2018
Taylor & Francis Ltd
Subjects
Asphalt
Asphaltenes
Chemical composition
Chemical damage
Correlation analysis
Damage assessment
Moisture resistance
moisture susceptibility
Multiple regression models
Organic chemistry
Polymers
Regression analysis
Resins
Sensitivity analysis
Stability
statistical analysis
thermodynamics
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Summary:To evaluate sensitivity of moisture damage resistance with chemical composition of asphalt, the adhesion energy, debonding energy as well as compatibility ratio of 69 asphalt-aggregate combinations were calculated with thermodynamical models. Pearson correlation analysis and regression analysis were carried out to correlate the relationships between asphalt chemical composition (saturates, aromatics, resins, asphaltenes, and wax) and moisture stability of asphalt mixture. The results showed that more resins and less asphaltenes in asphalt could lead to better moisture stability of asphalt mixture under dry and wet conditions, which can be effectively predicted by multiple regression models with different asphalt chemical components.
Bibliography:ObjectType-Article-1
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content type line 14
ISSN:1091-6466
1532-2459
DOI:10.1080/10916466.2018.1468775