基于灰色关联度法的混凝土耐久性影响因素研究  

Study on the Influencing Factors of Concrete Durability by Grey Relation Degree

作　　者：徐存东[1,2] 田子荀 谢佳林[1,2] 程慧[1,2] 刘璐瑶[1,2] 王国霞[1,2] 

机构地区：[1]华北水利水电大学,河南郑州450011 [2]水资源高效利用与保障工程河南省协调创新中心,河南郑州450011

出　　处：《水力发电》2017年第7期62-66,共5页Water Power

基　　金：国家自然科学基金资助项目(51279064;51579102);河南省教育厅科技创新人才支持计划(14HASTIT047);河南省教育厅科技创新团队支持计划(14IRTSTHN028)

摘　　要：为探究不同因素对混凝土耐久性的影响程度,根据实际的工程条件和室内加速试验结果,采用灰色关联度法分析了冻融循环、盐类侵蚀等多因素对混凝土质量、动弹模量和抗压强度等耐久性指标影响规律,并对试验结果进行分析与验证。结果表明:在冻融循环和硫酸盐侵蚀复合作用下,冻融循环破坏对混凝土耐久性影响最为显著,另外混凝土水胶比对其耐久性有一定的影响,选用较小的水胶比可以提高混凝土耐久性。In order to explore the influence degree of different factors on the durability of conerete, the grey relation degree method is used to analyze the influential law of freeze-thaw cyele, sulfate attaek and other factors on concrete durability based on actual engineering conditions and indoor accelerated test results. The indoor test results are also analyzed and verified. The results show that： （a） the effect of freeze-thaw cycle on the durability of conerete is most significant under the combined aetion of freeze-thaw cyele and sulfate attack; and （b） the water-cement ratio of concrete has a certain impact on its durability, so a smaller water-cement ratio can improve the durability of concrete.

关 键 词：混凝土耐久性 灰色关联度法 冻融循环 硫酸盐侵蚀 水胶比 

分 类 号：TU528.1[建筑科学—建筑技术科学]