水分与氯离子在再生混凝土中的迁移规律  

Migration Rules of Water and Chloride Ions into Recycled Concrete

作　　者：丁小雅 张鹏[1] 刘庆 

机构地区：[1]青岛理工大学土木工程学院,266033 [2]澳门大学

出　　处：《混凝土与水泥制品》2018年第9期32-35,共4页China Concrete and Cement Products

基　　金：国家自然科学基金项目(U1706222;51778309);山东省自然科学基金项目(ZR2018JL018;ZR2017ZC0737);青岛地铁科研项目(R3-ZX-2018-11)

摘　　要：采用毛细吸盐方法对水分及氯离子在再生混凝土中的迁移展开了研究。研究了不同取代率、不同氯盐浓度下再生混凝土的水分和氯离子的侵入规律,分析了毛细吸盐条件下水分和氯离子传输关系。结果表明,氯离子与水分的传输在再生混凝土中也呈现非同步性;再生粗骨料取代率大的试件中的水侵入深度约为氯离子侵入深度的3倍;在毛细吸附初期,二者渗透呈现近似线性相关关系。The intrusion laws of water and chloride ions in recycled concrete at different substitution rates and different chloride concentrations are studied. The relationship between moisture and chloride transport under capillary suction conditions is analyzed. The results show that the transport of chloride ion and moisture is also non-synchronous in the recycled concrete; the depth of water penetration in the sample with large replacement rate of regenerated aggregate is approximately 3 times the penetration depth of chloride; at the initial stage of capillary adsorption, penetration presents an approximately linear correlation.

关 键 词：水传输 氯离子侵入 再生混凝土 毛细吸收 

分 类 号：TU528[建筑科学—建筑技术科学]