水泥细度与成分对混凝土温升的影响  

Influence of Cement Fineness and Components on Temperature Rise of Concrete

作　　者：王冲[1] 殷吉强 肖波[1] 白光[1] 杨长辉[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045

出　　处：《土木建筑与环境工程》2014年第1期114-118,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：西部交通项目(2009 318 000 033)

摘　　要：大体积混凝土的绝热温升影响因素众多，其中水泥细度与组成成分的影响研究较少。分别测试了不同水泥细度及碱含量、粉煤灰掺量与石膏含量等对混凝土温升的影响规律。研究结果表明，随着水泥比表面积的增加，混凝土绝热温升值与温升速率随着水泥细度增加而增大；水泥碱含量在0．4％～1．2％范围内，水泥碱含量增加，其最大温升值减小，水泥碱含量过高或过低都会延长混凝土温升时间；粉煤灰的掺入有利于降低混凝土最大温升值；石膏含量增加也对控制混凝土温升有利。Adiabatic temperature rise of mass concrete is effected by many factors .Among those factors ,the analysis of cement fineness and components is lacking . Influences of cement fineness , alkali content , replacement of fly ash ,and gypsum content on temperature rise of concrete were investigated .The test results show that ,temperature rise and temperature rise rate are improved with the increment of specific surface area of cement .When alkali content is ranging from 0 .4% to 1 .2% ,the maximum temperature is reduced with the increment of alkali content ,and the temperature-time will be extended whether too high or too low alkali content in cement .The increment of replacement of fly ash and gypsum content is good for reducing temperature rise of concrete .

关 键 词：水泥细度 碱含量 粉煤灰 石膏含量 混凝土温升 

分 类 号：TU528.0[建筑科学—建筑技术科学]