无机和有机类混凝土养护剂养护效果研究  

Research on Curing Effect of Inorganic and Organic Concrete Curing Agents

作　　者：朱凌杰 ZHU Lingjie

机构地区：[1]上海城建隧道装备科技发展有限公司,上海市201800

出　　处：《城市道桥与防洪》2024年第9期264-266,282,M0024,共5页Urban Roads Bridges & Flood Control

摘　　要：为研究无机和有机类混凝土养护剂的养护效果,通过选择市售常见的渗透型无机类改性水玻璃养护剂和成膜型有机类改性丙烯酸养护剂,对比不同养护条件,获得试验结果。研究结果表明,上述养护剂对混凝土抗裂纹性能表现不足。改性丙烯酸复合养护剂养护的管片裂纹控制更加集中,对局部构件的影响较小。混凝土强度随龄期增长,但频繁洒水不利于表面成膜。水性养护剂对环境要求高,水分易流失不利于水化反应。混凝土内部空隙影响水化反应和碳酸钙生成。该结论为今后混凝土构件外养护剂选择提供了参考性。In order to study the curing effects of inorganic and organic concrete curing agents,a permeated inorganic modified water glass curing agent and a film-forming organic modified acrylic curing agents commonly commercially available are selected to compare the different curing conditions for obtaining the test results.The research results show that the above curing agents have the insufficient performance on crack resistance of concrete.The crack control of the segments cured by the modified acrylic composite curing agent is more concentrated.And the influence on the local components is small.The concrete strength increases with the age,but the frequent watering is not beneficial to the surface film forming.The aqueous curing agent has the higher environmental requirements,and its moisture is easy lost,which is not beneficial to the hydration reaction.The internal void of concrete will affect the hydration reaction and lime carbonate generation.This conclusion provides a reference for the selection of external curing agents for concrete components in the future.

关 键 词：混凝土养护剂 养护效果 裂纹扩展 烧失量 强度增长 

分 类 号：U454[建筑科学—桥梁与隧道工程]