摘要
为有效地控制三峡二期工程混凝土内部最高温度 ,采取了一系列技术措施 ,包括配合比的优化 ,出机口温度、运输、仓面的环境温度的控制 ,初期冷却通水等 ,其中出机口温度控制和混凝土初期通水是温控的重点 ,混凝土运输过程中的温度控制是难点。由于切实实施各项温控技术 ,有效地控制了坝体内部的最高温度 ,坝块内部混凝土最高温度一般都控制在 2 5～ 2 8℃ ,低于设计允许值 。
In order to control the inner maximum temperature of concrete for Stage Ⅱ works of TGP,a series of technical measures are adopted,including optimization of concrete mixing proportion,control of concrete temperature at batching plant outlet and environmental temperature in transportation and placement,water cooling at initial stage etc.The control of concrete temperature at the batching plant outlet and water cooling at initial stage are key points for temperature control,while the environmental temperature control in transportation is the difficult point.For conscientiously taking various temperature control technologies,the inner maximum temperature in dam is effectively controlled,generally in 25～28℃,less than designed allowable value,and good results are obtained.
出处
《人民长江》
北大核心
2001年第9期13-15,共3页
Yangtze River
