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海水对混凝土断裂能及强度的影响 被引量:8

Influence of seawater on the fracture energy and strength of concrete
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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.
出处 《混凝土》 CAS CSCD 北大核心 2007年第7期9-10,13,共3页 Concrete
基金 国家自然基金项目(50378045)
关键词 断裂能 强度 海水浸泡混凝土 表面能 fracture energy strength seawater-saturated concrete surface energy
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