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.
出处
《水利水电技术》
CSCD
北大核心
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)
关键词
大体积混凝土
绝热温升
试验方法
mass concrete
adiabatic temperature rise
new test method
