海水对混凝土断裂能及强度的影响  

Influence of seawater on the fracture energy and strength of concrete

作　　者：孙志伟[1] 任昭君[1] 赵铁军[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《混凝土》2007年第7期9-10,13,共3页Concrete

基　　金：国家自然基金项目(50378045)

摘　　要：为研究海水对混凝土断裂能及强度的影响,通过三点弯曲试验和稳定的楔形劈裂试验对海水浸泡混凝土、水浸泡混凝土和全干燥混凝土试件进行测试,并利用CONSOFT软件对三组试件的力-变形曲线进行拟合。与水浸泡混凝土的断裂能和强度作了相应对比。试验表明海水使浸泡后的混凝土断裂能减少,其强度也随之降低。从表面能及表面张力的观点分析了断裂能和强度降低的原因。To clarify the influence of seawater on the fracture energy and strength of concrete, three-points bending test and wedge splitting test are used to determine the fracture energy in seawater saturated concrete, water saturated concrete and dry concrete. Load-displacement curves are fitted through the CONSOFT software.Experiment indicts that fracture energy and strength all decrease after saturated in seawater, as a contrast to the water-saturated concrete, Explain that fracture energy and strength decrease from the viewpoint of surface energy and surface tension.

关 键 词：断裂能 强度 海水浸泡混凝土 表面能 

分 类 号：TU528.01[建筑科学—建筑技术科学]