东南大学学报（英文版）2020，Vol.36Issue(1)：73-80,8.DOI:10.3969/j.issn.1003-7985.2020.01.010
养护龄期对生态高延性水泥基复合材料抗压和抗拉应力-应变关系的影响
Effects of curing age on compressive and tensile stress-strain behaviors of ecological high ductility cementitious composites
摘要
Abstract
To obtain the design parameters of the structure made by ecological high ductility cementitious composites (Eco-HDCC), the effects of curing age on the compressive and tensile stress-strain relationships were studied. The reaction degree of fly ash, non-evaporable water content and the pH value in pore solution were calculated to reveal the mechanical property. The results indicate that as the curing age increases, the peak compressive strength, peak compressive strain and ultimate tensile strength of Eco-HDCC increase. However, the ultimate compressive strain and ultimate tensile strain of Eco-HDCC decrease with the increase in curing age. Besides, as the curing age increases, the reaction degree of fly ash and non-evaporable water content in Eco-HDCC increase, while the pH value in the pore solution of Eco-HDCC decreases. Finally, the simplified compressive and tensile stress-strain constitutive relationship models of Eco-HDCC with a curing age of 28 d were suggested for the structure design safety.关键词
生态高延性水泥基复合材料( Eco-HDCC)/抗压应力-应变关系/抗拉应力-应变关系/养护龄期/反应程度/非蒸发水含量/孔溶液pH值Key words
ecological high ductility cementitious composites ( Eco-HDCC )/compressive stress-strain behavior/tensile stress-strain behavior/curing age/reaction degree/non-evaporable water content/pH value in pore solution分类
建筑与水利引用本文复制引用
柴丽娟,郭丽萍,陈波,曹园章..养护龄期对生态高延性水泥基复合材料抗压和抗拉应力-应变关系的影响[J].东南大学学报（英文版）,2020,36(1):73-80,8.基金项目
The National Natural Science Foundations of China (No. 51778133), the Transportation Science &Technology Project of Fujian Province ( No. 2017Y057 ), the China Railway Project ( No. 2017G007-C), Foundation of the China Scholarship Council ( No. 201906090163). （No. 51778133）
