Coupling of oxidative ageing and moisture damage in asphalt mixtures

被引：64

作者：

Das, Prabir Kumar ^{[1
]}

Baaj, Hassan ^{[1
]}

Kringos, Niki ^{[2
]}

Tighe, Susan ^{[1
]}

机构：

[1] Univ Waterloo, Ctr Pavement & Transportat Technol, Waterloo, ON N2L 3G1, Canada

[2] KTH Royal Inst Technol, Div Highway & Railway Engn, SE-10044 Stockholm, Sweden

来源：

ROAD MATERIALS AND PAVEMENT DESIGN | 2015年 / 16卷

关键词：

asphalt mixture; mixture morphology; micro-structures; moisture damage; ageing; ATOMIC-FORCE MICROSCOPY; BITUMEN;

D O I：

10.1080/14680629.2015.1030835

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, a possible way to capture the combined effect of oxidative ageing and moisture damage on mixture performance has been proposed. The formulations that are needed for finite element (FE) modelling of oxygen and moisture diffusion process have been established. The proposed model should be able to link the in-time changes to the mastic as function of mixture morphology, ageing propensity and the moisture diffusion properties to the physical properties of the asphalt mixture due to the loss of adhesive and/or cohesive bonding. Such an FE model can help find the trends and relationships that can assist in the development of predictive pavement performance model. Also, from this, one can figure out the key parameters that are mainly responsible for ageing-moisture-induced premature damage of asphalt pavements.

引用

页码：265 / 279

页数：15

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