EVALUATING FATIGUE BEHAVIOR OF ASPHALT BINDERS AND MIXES CONTAINING DATE SEED ASH

Journal of Civil Engineering and Management - Tập 23 Số 8 - Trang 1164-1175
Ali Foroutan Mirhosseini1, Amir Kavussi2, Mohammad Hossain Jalal Kamali2, Mohammad Mehdi Khabiri3, Abolfazl Hassani2
1Department of Civil and Environmental Eng., Norwegian University of Science and Technology, Trondheim, Norway
2Civil and Environmental Engineering Department, Tarbiat Modares University, Tehran, Iran
3Civil Engineering Department, Yazd University, Yazd, Iran

Tóm tắt

Fatigue is one of the most occurring distresses in asphalt pavements. Asphalt binder plays a critical role in fa­tigue behavior of asphalt mixes. Modelling and predicting fatigue behavior of binders will result in more fatigue resistant mixes. In this research, possibility of using Date Seed Ash alongside two commonly used additives (namely, a siliceous and a limestone) as bitumen modifier were investigated. Then, the influence of these additives on fatigue behavior of asphalt binders and mixes was investigated. Linear Amplitude Sweep (LAS) test was carried out and Viscoelastic Con­tinuum Damage (VECD) parameter was determined. In addition, Indirect Tensile Fatigue Test (ITFT) was performed on mixes containing these additives. Correlation equations were developed to link fatigue behavior of binders to those of mixes. The results showed acceptable agreement between binders and mixes fatigue testing results. In addition, with predicted models it was able to obtain the asphalt binders contribution to mixes fatigue resistance. However, in the case of ash modified samples, no good correlation was observed between fatigue behavior of binders and that of mixes.

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Thông tin xuất bản

Journal of Civil Engineering and Management

Tập 23 Số 8

1164-1175

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