不同养护条件下混凝土梁柱构件耐久性测试  

Durability Testing of Concrete Beam and Column Members Under Different Maintenance Conditions

作　　者：王嫦娟 WANG Chang-juan(Department of Architectureand Landscape,Chizhou Vocational and Technical College,Chizhou Anhui 247000,China)

机构地区：[1]池州职业技术学院建筑与园林系

出　　处：《兰州工业学院学报》2020年第1期48-52,共5页Journal of Lanzhou Institute of Technology

基　　金：安徽省高校自然科学研究重点项目(KJ2018A0844);安徽省教育厅质量工程项目(2016jxtd086,2015tszy060)

摘　　要：为测试3种常见养护条件对混凝土梁柱构件耐久性的影响,通过试验采用相同成分的混凝土,设计相同结构的混凝土梁柱构件,在常温养护、热养护、负温养护条件下对比构件内部毛细水迁移情况,分析构件内部结构.结果表明:在常温养护条件下,在整个养护龄期构件内部的毛细水一部分向外迁移,基本不对构件内部造成破坏,耐久性较好;在热养护条件下,构件内部毛细水不会向外部迁移,构件内部不会产生孔隙,耐久性最好;在负温养护条件下,构件内部的毛细水部分冻结,改变了构件固有的结构,孔隙变大,耐久性最差。In order to test the influence of three kinds of common curing conditions on the durability of concrete beam column components,the concrete beam column components of the same structure are designed by using the same composition of concrete through the test.Under the conditions of normal temperature curing,heat curing and negative temperature curing,the capillary water migration in the components is compared and the internal structure of the components is analyzed.The results show that under the condition of normal temperature curing,the whole curing age is a part of capillary water in the component migrates outwards,which basically does not cause damage to the component interior and has good durability;under the condition of thermal maintenance,the capillary water in the component interior will not migrate outwards and there will be no pores in the component interior,which has the best durability.Under the condition of negative temperature maintenance,the capillary water in the component interior freezes,this changes the inherent structure of the component,making the pores larger and durability worse.

关 键 词：不同养护条件 混凝土梁柱构件 耐久性 毛细水 

分 类 号：TU352[建筑科学—结构工程]