博士生导师
硕士生导师
个人信息Personal Information
教师英文名称：Tengfei Xu
学历：博士研究生毕业
学位：工学博士学位
毕业院校：西南交通大学
学科：桥梁与隧道工程
所在单位：土木工程学院
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Modeling blended cement concrete tensile creep for standard ring test application
发表刊物：Structural Concete
摘要：The tensile creep of concrete with supplementary cementitious materials (SCMs) such as fly ash (FA) and ground granulated blast furnace slag (GGBFS) is investigated in this paper. A total of 21 series of tensile creep tests using dog-bone specimens under uniaxial tensile loading have been carried out. The cement replacement rates considered were 30% fly ash, 40% and 60% GGBFS. The characteristic compressive strength of concrete was ranging from 25 to 100 MPa. The tests were conducted from the age of 2 days until 28 days. It is observed that the tensile creep of fly ash concretes was slightly lower than that of the reference mixtures without SCM. For GGBFS concrete, the higher the GGBFS content, the higher the tensile creep. Existing creep models, originally developed for creep in compression, could not predict the experimental tensile creep results. Thus, a new tensile creep model was proposed including creep prediction for concrete with fly ash and GGBFS. The new model was calibrated only for controlled environmental conditions (23°C and 50% RH) and has been validated by analyzing the development of concrete tensile stress in the restrained ring test.
合写作者：Arnaud Castel,Taehwan Kim,Quang Dieu Nguyen,Sumaiya Afroz
第一作者：Yingda Zhang
通讯作者：Tengfei Xu
是否译文：否
发表时间：2022-07-06
收录刊物：SCI