基于大体积混凝土中水泥缓凝剂的优化选择研究

Research on the Optimum Selection of Cement Retarder in Mass Concrete

随着科技的发展,建筑设计水平及施工技术的迅猛发展,建筑基础工程中大体积混凝土也越来越重要。大体积混凝土的温度裂缝问题越来越严峻,它内部的高温主要来自水泥的水化热,加强有效的控温措施十分重要。控温主要措施是控制水泥的水化速度,控制水泥的水化速度首要是选对水泥缓凝剂。本文研究目前水泥中常使用的几种缓凝剂对水泥凝结时间及强度的影响,从而选择出更有利于大体积混凝土施工和使用的水泥。

With the development of science and technology,the level of architectural design and the rapid development of construction technology,building foundation engineering mass concrete is more and more important.The main defect of temperature crack of mass concrete is more and more serious.It is very important to strengthen effective temperature control measures.The high temperature in it mainly comes from the hydration heat of cement.Through experiments,this paper studies the influence of several retarders commonly used in cement on the setting time and strength of cement,so as to select the cement which is more conducive to the construction and use of mass concrete.