环境温度对混凝土初凝时间、缓凝剂作用效果的影响及应对措施  

The Influence of Ambient Temperature on Initial Setting Time and Retarder Effect of Concrete and Corresponding Measures

作　　者：林在凎 LIN Zaigan(KZJ New Materials Group Fujian Co.,Ltd.)

机构地区：[1]科之杰新材料集团福建有限公司

出　　处：《广东建材》2024年第12期57-59,共3页Guangdong Building Materials

摘　　要：初凝时间是混凝土的一个重要指标,缓凝剂在现今预拌混凝土生产中也逐渐成为不可或缺的部分,不少研究表明环境温度对混凝土的初凝时间有显著的影响,本文通过调整缓凝剂用量,使不同环境温度梯度下的混凝土初凝时间偏差在30min以内,及不同环境温度下保持缓凝剂用量不变,测试混凝土初凝时间的变化情况,得出环境温度对混凝土初凝时间及缓凝剂的作用效果均有显著的影响,并对初凝时间带来的异常问题提出措施与建议。The initial setting time is an important index of concrete,and retarding agent has gradually become an indispensable part in the production of ready-mixed concrete.Many studies have shown that environmental temperature has a significant impact on the initial setting time of concrete.In this paper,by adjusting the dosage of retarding agent,the initial setting time of concrete under different environmental temperature gradients can be deviated within 30min.It is found that the ambient temperature has significant influence on the initial setting time of concrete and the effect of the retarder.Measures and suggestions are put forward to solve the abnormal problems caused by the initial setting time.

关 键 词：温度 初凝时间 缓凝剂 

分 类 号：TU528[建筑科学—建筑技术科学]