不同温度养护水对混凝土初期强度的影响分析
Influence Analysis of Different Temperature Curing Water on the Initial Strength of Concrete
胡文斌 1杨磊 1刘振阳 1李有锋 1杜世彪1
作者信息
- 1. 甘肃路桥建设集团有限公司甘肃新路交通工程有限公司,甘肃兰州 730300
- 折叠
摘要
为了探索不同温度养护水对混凝土强度增长的影响特征,选择混凝土强度等级为C20、C30、C50的试块,分别设置养护水温度为20 ℃、30 ℃、40 ℃的控制条件,进行室内平行对比实验,研究了在3种不同温度养护水条件下不同强度等级混凝土强度增长的特征.研究结果表明:浇筑后混凝土前7 d强度增长最快的是用温度20 ℃养护水养护的,其次为用30 ℃养护水养护的,最慢的是用40 ℃养护水养护的;混凝土强度等级越低,其养护水温度对浇筑后混凝土前7 d强度增长的影响越大;在20 ℃的养护水温度下,浇筑后混凝土前7 d强度能够达到设计强度的60％.认为,选择适宜温度的养护水对混凝土进行初期养护,有助于混凝土强度增长,同时能够有效地避免混凝土因凝结硬化产生的某些质量问题.
Abstract
In order to explore the characteristics of the influence of different temperature curing water on the strength growth of concrete,this study adopts the method of indoor parallel comparative experiments.Select C20,C30,and C50 concrete specimens for experimental exploration,set up three temperature control conditions for curing water:20℃,30℃,and 30℃,and study the characteristics of strength growth of different grades of concrete under three different temperature curing water conditions.The research results show that the strength of concrete increases the fastest 7 days before curing with water at 20℃,followed by 30℃,and the strength of concrete increases the slowest at 40℃;The lower the strength grade of concrete,the greater the influence of its curing water temperature on the strength growth of concrete in the first 7 days;At a curing water temperature of 20℃,the concrete strength can reach 60％of the design strength in the first 7 days.Choosing a suitable temperature of curing water can help increase the strength of concrete and effectively avoid some quality problems caused by concrete solidification and hardening.
关键词
养护水/混凝土/强度等级/强度增长Key words
maintenance water/concrete/strength level/strength increase引用本文复制引用
出版年
2024
NETL
NSTL
万方数据