Hao Fu, Chaohui Wang, Liangliang Niu, Guolin Yang, Luqing Liu
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引用次数: 18
Abstract
ABSTRACT To ensure the effective bonding of each structural layer of pavement and improve the service quality and durability of pavement, the waterborne epoxy resin (WER) emulsified asphalt (WEREA) tack coat binders were prepared by using polyurethane-epoxy resin. The basic properties of WEREA, such as tensile strength, adhesion to aggregate, high temperature heat resistance and low temperature impact resistance were studied. Its composition and ratio were optimised. The waterproof, bonding and durability performance of WEREA used in pavement tack coat were evaluated. The results show that WEREA prepared by polyether polyurethane modified E-51 epoxy resin (PUD-E51) has higher early and late strength. Its tensile strength was 1.75 MPa after curing for 7 days. The basic properties of WEREA, including adhesion to aggregate, heat resistance and impact resistance were better than those of SBS modified asphalt and crumb rubber modified asphalt binder. The tack coat of WEREA cannot seep under the dynamic water pressure of 0.6 MPa for 30 min. According to the interlaminar shear strength, the recommended spraying amount of the WEREA tack coat was 1.0 kg/m2. The WEREA could guarantee the effective bonding of each structural layer of the pavement, and improve the durability of the tack coat and pavement.
期刊介绍：
Pavement Engineering is important for facilitating national and international movement of people, services, and goods. Building and preserving efficient, reliable, and sustainable highway and airport pavement systems is crucial for economic and social development.
The International Journal of Pavement Engineering is dedicated to the publication of cutting edge research and development in such important types of structures and facilities, including advanced analytical and computational techniques and pavement mechanics; material characterization and innovative laboratory testing techniques, non-destructive testing and evaluation; novel design approaches and their implementation; construction techniques and strategies; rehabilitation, preservation, and maintenance strategies and approaches; bound and unbound pavement performance; pavement life cycle assessment and life cycle cost analysis; pavement management systems. The Journal publishes the latest research findings from all over the world as well as case studies. Hence, one of the journal aims is to bring together and disseminate results of advanced research and its implementation across the world. Occasionally, the journal publishes state-of-the-art reviews on pavement engineering aiming to transfer advanced pavement understanding to the international user community as well as special issues focusing on subjects of importance and interest to the pavement community.
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