冬季早龄期混凝土表面保护时刻分析  

Analysis on surface protection time for concrete at early age in winter

作　　者：黄达海[1] 杨虎[2] 苏军安[3] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002 [2]北京航空航天大学交通科学与工程学院,北京100083 [3]中国水电顾问集团中南勘测设计研究院,湖南长沙410014

出　　处：《水利水电技术》2008年第9期63-66,共4页Water Resources and Hydropower Engineering

基　　金：湖北省自然科学基金创新群体项目(2006ABC004)

摘　　要：通过仿真分析软件FZFX3D,以一个冬季开始混凝土浇筑的模型坝为例,计算了混凝土浇筑后表面一直裸露和浇筑后立即覆盖保温材料两种工况,分析了特定高程上混凝土的温度分布、热流量以及坝体整体温升,建议了冬季混凝土表面保护的最佳时刻。Based on the simulative analysis software-FZFX3D, two different conditions： the concrete surface is to be covered with or without curing insulation material immediately after the placement are calculated by taken a model dam, of which＇the concrete construction begins during winter, as the actual case, The temperature distribution, heat flux and temperature rise of the whole dam body on a specific elevation are analyzed, and then an optimal time to begin the concrete surface protection for the curing during winter is proposed herein as well.

关 键 词：早龄期混凝土 温度分布 热流量 散热强度 温升 混凝土保护 

分 类 号：TU755.8[建筑科学—建筑技术科学]