东南大学学报（英文版）2017，Vol.33Issue(1)：96-100,5.DOI:10.3969/j.issn.1003-7985.2017.01.016
冻融作用对环氧沥青混凝土抗裂性能的影响
Effects of freeze-thaw cycles on fracture behavior of epoxy asphalt concrete
摘要
Abstract
According to the winter temperature of Peking,the freeze-thaw (FT) condition in laboratory was determined.Seven groups of epoxy asphalt concrete (EAC) specimen were exposed to different FT cycles.The flexural modulus and fracture energy (GF) of EAC exposed to different FT cycles were obtained through the 3-point bending test.Meanwhile,the plane strain fracture toughness (KIC) of EAC was obtained through numerical simulation.The results show that the flexural modulus of the PT conditioned EAC samples decreases with the increase of FT cycles.The FT damage of flexural modulus is 60％ after 30 PT cycles.Nevertheless,with the increase of FT cycles,the GF and Kic of EAC decrease first and then increase after 15 FT cycles.关键词
冻融循环/环氧沥青混凝土/弯曲劲度模量/断裂能/平面应变断裂韧度Key words
freeze-thaw cycle/epoxy asphalt concrete/flexural modulus/fracture energy/plane strain fracture toughness分类
交通工程引用本文复制引用
张勐,钱振东..冻融作用对环氧沥青混凝土抗裂性能的影响[J].东南大学学报（英文版）,2017,33(1):96-100,5.基金项目
The National Natural Science Foundation of China(No.51378122). （No.51378122）
