【作者】 陈元素； 李昕； 范颖芳；

【Author】 Yuan-su Chen, Xin Li, Ying-fang Fan (School of Hydraulic Engineering and Civil Engineering Dalian University of Technology ,Liaoning Dalian 116024; Institute of Road and Bridge Engineering Dalian Maritime University, Liaoning Dalian 116026)

【机构】 大连理工大学土木水利学院； 大连海事大学交通工程研究所；

【摘要】 考虑了Na2SO4、NaCl两种腐蚀介质对混凝土的腐蚀作用,研究了两种浓度作用下腐蚀后C30混凝土的抗压强度。试验结果表明,两种腐蚀性介质作用下,混凝土强度在腐蚀作用初期有所增加,随着腐蚀时间的增加,混凝土强度逐渐下降。NaCl 腐蚀后的强度衰减率越来越小,Na2SO4腐蚀后的强度衰减率越来越大。介质浓度对混凝土强度变化率的影响不大。基于试验研究,提出了计算腐蚀混凝土强度的数学模型。更多还原

【Abstract】 Considered the effect of corrode mediator of NaCl and Na2SO4 on concrete, researched the compression strength of corroded concrete on the effect of two sort concentration of corrode liquor. The result indicated that the compression strength of concrete increased a little at the beginning .With the increasing time of corrode, the compression strength of concrete fall down gradually ,the decline rate of NaCl corroded concrete will become more and more smaller ,and the decline rate of Na2SO4 corroded concrete will speed up .The consistency of the liquor do not have the high effect on the strength change rate of the concrete .Based on the experiment,extract a mathematic model to compute the compression strength of corroded concrete.更多还原