硫酸盐对淡化海砂混凝土的腐蚀研究  

Research on corrosion to washed sea sand concrete attacked by sulfate

作　　者：苏卿[1] 陈艾荣[1] 

机构地区：[1]同济大学土木工程学院桥梁系,上海200092

出　　处：《混凝土》2013年第1期21-23,27,共4页Concrete

摘　　要：对河砂混凝土和淡化海砂混凝土在5%Na2SO(4质量分数,下同)、5%MgSO4+3.5%Cl-腐蚀溶液中浸泡和浸烘的损伤过程研究。结果表明:两种试验制度下,河砂混凝土的动弹模损失大于同配合比的淡化海砂混凝土;浸烘试验中,淡化混凝土的动弹模降低40%,河砂混凝土约为60%。The damage process of ordinary concrete and washed sea sand concrete, attacked by solutions of 5%Na2804 （in mass, same be- low）, 5%MGSO4＋3.5%C1- with method of immersion and drying-immersion were studied.The results showed that the loss of elastic modu- lus of ordinary concrete was much more than that of washed sea sand concrete.At the end of drying-immersion experiment, the relative dynamic elastic modulus of washed sea sand concrete was nearly 0.6,which of ordinary concerete was 0.4.The deterioration of concrete presents in elastic modulus was stable, then decreased.

关 键 词：淡化海砂 硫酸盐腐蚀 动弹模 

分 类 号：TU528.01[建筑科学—建筑技术科学]