混凝土抗冻性试验方法及评价参数的研究评述  

Evaluation of the study on the test method about the frost resistance of concrete and the appraising parameter

作　　者：李中华[1] 巴恒静[1] 邓宏卫[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150006

出　　处：《混凝土》2006年第6期9-11,14,共4页Concrete

摘　　要：本文主要阐述了混凝土冻融破坏的机理,国内外混凝土抗冻性试验方法,评价参数及影响混凝土的抗冻性试验方法的因素。分析结果表明在除冰盐存在的情况下大大加剧了混凝土的冻融破坏。影响这些试验方法的因素为:试件与传热介质的接触方式;传热介质的种类和浓度;冻融循环制度。通过试件单位面积的剥蚀量和动弹性模量的损失更能准确、全面地反映混凝土的抗盐冻性能,并建议在我国应建立适合道路和桥梁的单面盐冻试验方法。In this paper the deterioration mechanism by freeze-thaw cycling, the test methods about frost resistance, appraising parameters of concrete and the influencing factors mainly were represented. The results of analysis claim deicer-salt greatly accelerates deicer-frost scaling. The factors influencing the test method about frost resistance are the contact position of sample with medium, the species and concentration of medium and the system of freeze-thaw cycling. The scaled mass per unit area and loss of dynamic modulus of elasticity can exactly reflect the frost resistance and the test methods about deicer-frost of pavement and bridge are advised.

关 键 词：剥落量 抗冻性 试验方法 盐冻剥蚀 冻融循环 

分 类 号：TU528.01[建筑科学—建筑技术科学]