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单轴应力状态下受NaCl腐蚀混凝土受拉应力—应变曲线试验研究
Experimental Investigation on Tensile Stress-Strain Relation of Concrete Corroded by NaCl Solution
【Author】 Hu Yue-dong Fan Ying-fang Zhang Ying-zi Zhao Li-dong (Institute of Road and Bridge Engineering Dalian Maritime University,Liaoning Dalian 116026)
【机构】 大连海事大学道路与桥梁工程研宄所；
【摘要】 针对受10％和20％NaCl 溶液的腐蚀作用,研究了腐蚀后 C30混凝土的抗拉强度等力学性能以及应力-应变曲线的变化规律；阐述了受氯化钠溶液腐蚀混凝土性能劣化的内在原因。试验结果表明,氯化钠溶液腐蚀作用下,混凝土的峰值应变、抗拉强度、弹性模量与腐蚀时间和溶液浓度成线性下降关系,应力-心变曲线逐渐趋于增缓。
【Abstract】 Considering the corrosive effect 10% and 20% NaCl solution,tensile property of corroded concrete was studied by experiment.Tensile stress-strain relation of concrete corroded by different duration is achieved. Relation between corrosion duration and the mechanical index of concrete were discussed.It is shown that the tensile strength of concrete fall down gradually,the decline rate of concrete corroded by NaCl will become more and more smaller.It can also be drawn that concentration of NaCl solution take significant effect on the strength of the concrete.
【Key words】 concrete； corrosion； tensile strength； elastic modulus； stress-strain curve；
- 【会议录名称】 第16届全国结构工程学术会议论文集（第Ⅲ册）
- 【会议名称】第16届全国结构工程学术会议
- 【会议时间】2007-10
- 【会议地点】中国山西太原
- 【分类号】TU528
- 【主办单位】中国力学学会结构工程专业委员会、太原理工大学土木工程学院、中国力学学会《工程力学》编委会、清华大学土木工程系