混凝土在NaCl溶液中抗冻及抗渗性能的研究  

Research on the capability of permeability and frost-resistant of concrete in NaCl solution

作　　者：马昆林[1] 谢友均[1] 李立斌[2] 龙广成[1] 石明霞[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075 [2]湖南工业职业技术学院,湖南长沙410007

出　　处：《混凝土》2006年第6期15-17,共3页Concrete

基　　金：国家863高新技术研究发展计划(2002AA335020)

摘　　要：研究了空白混凝土、单掺FA及FA与SF复合的混凝土在水胶比为0·35,龄期为28d时在NaCl溶液中抗冻的性能和抗冻试验前后抗氯离子渗透的性能。试验结果表明:在NaCl溶液中混凝土表面剥蚀均较为严重,掺入矿物掺合料的混凝土动弹模在冻融试验过程中下降较少,抗氯离子渗透能力有较大提高;适量的SF与FA复合能够得到抗氯离子渗透及抗冻性能较好的混凝土。The capability of chloride permeability and frost-resistant of concrete,concrete with FA and concrete with SF and FA, in 28 days as well water binder rate 0.35 in NaGl solution, was studied. It is showed that the surface of concrete, in NaCl solution, was destroyed seriously. After mineral admixture was mixed into concrete, the decrease of relative dynamic modulus of elasticity was slowed,and the capability of chloride permeability was improved. Concrete with proper FA and SF can improve both the capability of chloride permeability and frost-resistant of concrete.

关 键 词：混凝土 NACL溶液 抗冻 氯离子渗透 

分 类 号：TU528[建筑科学—建筑技术科学]