锦屏一级水电站拱坝混凝土抗冻性能试验分析  

Frost resistance of concrete for arch dam of Jinping Hydropower Station I

作　　者：唐天国[1,2] 段绍辉[1] 段云岭[3] 

机构地区：[1]二滩水电开发有限责任公司,四川成都610051 [2]四川大学建筑与环境学院,四川成都610065 [3]清华大学水利水电工程系,北京100084

出　　处：《水利水电技术》2010年第12期29-31,共3页Water Resources and Hydropower Engineering

基　　金：二滩水电开发有限责任公司合同资助项目(EHDCA-201007)

摘　　要：结合锦屏一级水电站大坝混凝土现场浇筑技术,对坝体典型区域取样试件进行冻融循环试验,并测量其相对动弹模量及质量损失系数。冻融过程中按50次循环为冻融基数,每50次冻融完成后即进行相对动弹模量及质量损失测试,并观测试件总体抗冻性能。结果表明,拌和楼出机口及坝体浇筑现场取样测试效果均较明显,其抗冻性能基本达到设计要求。Based on the in-situ placement of concrete for the construction of Jinping Hydropower Station I,the tests of freeze-thawing cycle are made on the samples taken from the typical locations of the dam body along with the measurements made on their relative dynamic elastic modulus and mass loss coefficient.During the freeze-thawing process,50 cycles are taken as the freeze-thawing cardinal number;after which the measurements on the relative dynamic elastic modulus and mass loss coefficient are made immediately with the observation on the general frost resistance of the sample.The result shows that the testing effects of both the samples taken from the exit of the concrete mixer plant and the site of the placement are more obvious,however,the relevant frost resistances can generally meet the those requirements specified in the design concerned.

关 键 词：混凝土浇筑 抗冻性 试验测试 相对动弹模量 质量损失系数 锦屏一级水电站 

分 类 号：TV431[水利工程—水工结构工程]