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CLC number: TU528.37

On-line Access: 2010-06-02

Received: 2009-10-08

Revision Accepted: 2010-01-25

Crosschecked: 2010-04-30

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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.6 P.415-424

http://doi.org/10.1631/jzus.A0900645


Micromechanics-based analysis for predicting asphalt concrete modulus


Author(s):  Xing-yi Zhu, Zhi-yi Huang, Zhong-xuan Yang, Wei-qiu Chen

Affiliation(s):  Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zhuxingyi66@yahoo.com.cn, hzy@zju.edu.cn

Key Words:  Asphalt concrete (AC), Micromechanics, Microstructure, Effective bonding, Optimum design, Elastic modulus


Xing-yi Zhu, Zhi-yi Huang, Zhong-xuan Yang, Wei-qiu Chen. Micromechanics-based analysis for predicting asphalt concrete modulus[J]. Journal of Zhejiang University Science A, 2010, 11(6): 415-424.

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A1 - Wei-qiu Chen
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DOI - 10.1631/jzus.A0900645


Abstract: 
The elastic modulus of asphalt concrete (AC) is an important material parameter for pavement design. The prediction and determination of elastic modulus, however, largely depends on laboratory tests which cannot reflect explicitly the influence of the microstructure of AC. To this end, a micromechanical model based on stepping scheme is adopted. Consideration is given to the influence of interfacial debonding and interlocking effect between the aggregates and asphalt mastic using the concept of effective bonding. Tests on asphalt mixture with various microstructures are conducted to verify the proposed approach. It is shown that the prediction is generally in agreement with experimental results. Parameters affecting the elastic modulus of AC are also discussed in light of the proposed method.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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