混凝土冻融耐久性量化分析  

Quantitative analysis of freeze-thaw durability of concrete

作　　者：苏昊林[1] 王立久[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《混凝土》2010年第5期1-2,6,共3页Concrete

基　　金："十一五"国家科技重大项目支撑计划(2006BAJ04A004)

摘　　要：阐述了混凝土的冻融破坏机理和冻融破坏的过程;根据混凝土冻融循环的试验结果,分析混凝土的抗压强度、劈拉强度和抗折强度随冻融次数变化的规律,并建立混凝土抗折强度的指数衰减规律方程,由此可对混凝土冻融耐久性进行量化分析;引入抗冻因子的概念进一步分析混凝土耐久性与强度的关系;同时提出了提高混凝土抗冻性能的主要措施。It describes the concrete freeze-thaw damage mechanism and process of freeze-thaw damage;according to the experimental results of concrete freeze-thaw cycle,analyzes concrete compressive strength、splitting tensile strength and flexural strength with the variation of the number of freezing and thawing,and established the concrete flexural strength of the exponential decay law of equation,so it can analyzes the freeze-thaw durability of concrete quantitatively;introduces the concept of freezing factor for further analysis of concrete durability and strength of the rela- tionship;meanwhile puts forward key measures to improve the performance of freeze-thaw resistance of concrete.

关 键 词：混凝土 冻融耐久性 破坏机理 量化分析 

分 类 号：TU528.01[建筑科学—建筑技术科学]