橡胶混凝土抗氯离子渗透性能试验研究  

EXPERIMENTAL STUDY ON CHLORIDE IONS PENETRATION RESISTANCE PROPERTIES OF CONCRETE CONTAINING SCRAP RUBBER POWDER

作　　者：王宝民[1,2] 涂妮[2] 郭志强[2] 

机构地区：[1]建筑安全与环境国家重点实验室,北京100013 [2]大连理工大学土木工程学院,辽宁大连116024

出　　处：《低温建筑技术》2012年第9期1-3,共3页Low Temperature Architecture Technology

基　　金：建筑安全与环境国家重点实验室开放基金(201202);海岸和近海工程国家重点实验室开放基金项目(LP1109);辽宁省高等学校科研项目(重点实验室项目)(LS2010045);辽宁省博士科研启动基金(20101017);大连市科学技术基金(2009J22DW032)

摘　　要：前期研究成果显示80～120目废旧轮胎橡胶颗粒掺加到水泥混凝土中,能起到"固体引气剂"的作用,可以大大提高混凝土的抗冻耐久性,适当的粒径和掺加搅拌工艺下,可以替代引气剂使用。文中基于前期研究基础上,采用RCM法和NEL法对橡胶混凝土的抗氯离子侵蚀性能进行研究,研究了水灰比、橡胶粉掺量及粒径对混凝土氯离子扩散系数的影响规律。同时文中对两种不同的抗氯离子渗透性能试验方法也进行了对比分析,结果表明两者之间具有较好的相关性。The previous results of our research group show that putting scrap rubber powders into cement concrete can greatly enhance frost resistance. The effect of rubber powders is equal to adding air-entraining mixture, under the condition of right size and quantity. This paper which based on the previous studies continue to research the chloride ions penetration resistance property of rubberized concrete based on RCM and NEL method, the influence of water cement ratio, content and size of rubber powder on chloride ions diffusion coefficient of rubberized concrete is researched. Contrastive analysis about two different testing methods for resistance of concrete to chloride penetration is conducted as well. The results show that there is a correlation between two methods.

关 键 词：橡胶混凝土 氯离子扩散系数 NEL法 RCM法 

分 类 号：TU528.041[建筑科学—建筑技术科学]