FLEXURAL FATIGUE PROPERTIES OF ULTRA-HIGH PERFORMANCE ENGINEERED CEMENTITIOUS COMPOSITES (UHP-ECC)
In recent years, the application of engineered cementitious composite (ECC) in structures subjected to cyclic fatigue loading, such as highway bridges, has become a hot topic.However, the strength and ductility of conventional ECC are not high enough, limiting its application in highway bridges under high-stress.In this work, we configured an ultra-high performance engineered cementitious composite (UHP-ECC) with a compressive strength of approximately 120 MPa, a tensile strength of up to 12 MPa, and a tensile strain capacity of more than 8%.The four-point bending test was used to study the fatigue performance of UHP-ECC at four different stress levels (0.5, 0.65, 0.8, and 0.9).The mid-span deflection of the specimen, the opening displacement of the bottom of the specimen and the crack width were monitored.Eventually, the number of fatigue cycles under different stress levels was obtained.
Ultra-high performance engineered cementitious composites Flexural fatigue stress level
Bin Xi Qianli Zhong Lili Sui Yingwu Zhou Shuyue Zheng
Shenzhen University, Shenzhen, China
国际会议
福州
英文
243-252
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）