大体积混凝土绝热温升试验新方法  

A new test method for determining the adiabatic temperature rise of mass concrete

作　　者：朱伯芳[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《水利水电技术》2010年第3期37-39,共3页Water Resources and Hydropower Engineering

基　　金：国家科技支撑计划项目(2008BAB29B05)

摘　　要：现有大体积混凝土绝热温升试验仪器只能进行28 d试验,由于掺用粉煤灰较多,实际上在28 d以后,混凝土温度还将继续上升,故有必要延长绝热温升测试时间。本文建议一种新的试验方法,试件表面包裹保温层,试验时间可延长至180 d。The present test method for determining the adiabatic temperature rise of mass concrete can be used only for the early 28 d concrete age. Because big amount of fly ash is mixed in the mass concrete, the adiabatic temperature will rise appreciably after the age of 28 d. A new test method is suggested in this paper. The test specimen is covered with thermal insulating layer. The test time may be as long as 180 d.

关 键 词：大体积混凝土 绝热温升 试验方法 

分 类 号：TV315[水利工程—水工结构工程]