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7d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7d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7d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。
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 20C,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.
作者
胡文斌
杨磊
刘振阳
李有锋
杜世彪
HU Wenbin;YANG Lei;LIU Zhenyang;LI Youfeng;DU Shibiao(Gansu Xinlu Transportation Engineering Co.,Ltd.,Gansu Road and Bridge Construction Group Co.,Ltd.,Lanzhou 730300,China)
出处
《成组技术与生产现代化》
2024年第1期31-33,38,共4页
Group Technology & Production Modernization
关键词
养护水
混凝土
强度等级
强度增长
maintenance water
concrete
strength level
strength increase
