A micromechanical model to evaluate the impact of air void content and connectivity in the oxidation of asphalt mixtures
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- 作者：Silvia Caroa ; scaro@uniandes.edu.co" class="auth_mail ; Alvaro Diaza ; 1 ; ajdiaz2001@gmail.com" class="auth_mail ; Diego Rojasb ; 1 ; dm.rojas52@uniandes.edu.co" class="auth_mail ; Hugo Nuñ ; ezc ; 2 ; hugo.nunez@grodco.com.co" class="auth_mail
- 关键词：Asphalt mixtures ; Oxidation ; Micromechanical model ; Air voids
- 刊名：Construction and Building Materials
- 出版年：30 June 2014
- 年：2014
- 卷：61
- 期：Complete
- 页码：181-190
- 全文大小：4568 K
文摘
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This paper presents a FE micromechanical model of oxidation in asphalt mixtures.
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The impact of the void phase on oxidative hardening of mixtures is evaluated.
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The model includes oxygen diffusion, chemical kinetics and mechanical simulations.
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Dynamic modulus was numerically computed in the first 5 years of pavement service.
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Air void content and connectivity strongly impact oxidative hardening in pavements.