Influence of flexural loading and chloride exposure on the fatigue behavior of high-performance lightweight engineered cementitious composites
Influence of flexural loading and chloride exposure on the fatigue behavior of high-performance lightweight engineered cementitious composites
复制标题
弯曲载荷和氯化物暴露对高性能轻质工程水泥基复合材料疲劳行为的影响
DOI：
10.1016/j.conbuildmat.2020.118512
复制
发表时间：
2020-07-20
影响因子：
7.4
通讯作者：
Yue, Yanchao
中科院分区：
文献类型：
--
作者：
Guo, Menghuan;Zhong, Qianli;Yue, Yanchao
The flexural fatigue behavior of high-performance lightweight engineered cementitious composites (HPLW-ECC) with tensile strength of 7.16 MPa and tensile strain capacity of 8.91% was investigated. The flexural repetitive loading demonstrated a pronounced influence on the fiber bridging capacity of HPLW-ECC. In contrast, the multiple cracking characteristics of HPLW-ECC under chloride exposure were maintained though its fatigue life decreased. The low-density HPLW-ECC exhibited high resistance to chloride penetration, and the fiber bridging capacity remained almost intact. Moreover, the flexural fatigue performance of HPLW-ECC possessing higher strength was comparable to that of conventional lightweight ECC. A fatigue life prediction model was proposed, and the model's failure probability was discussed based on the probabilistic reliability analyses. (C) 2020 Elsevier Ltd. All rights reserved.
