有机、无机内养护剂在混凝土中的应用研究

混凝土内养护剂为在混凝土绝湿、绝热条件下在其内部缓慢释放水分的储水材料,维持混凝土内部相对湿度,有效缓解混凝土的收缩。主要介绍了混凝土内养护剂的分类及其在混凝土中应用。内养护剂主要分为无机内养护剂(轻集料、多孔超细粉末)、有机内养护剂(高吸水性树脂)和有机-无机复合内养护剂,总结其影响吸水性能的主要因素,包括它们的组成及结构特征。此外,还系统讨论了不同材料内养护剂对混凝土自收缩、干燥收缩及强度的影响。最后,对内养护剂研究中还存在的问题和将来一些可能的研究方向进行了总结和展望。

Study on the application of organic and inorganic curing agent in concrete

The concrete curing agent is a water storage material which slowly releases moisture under the condition of dampness and heat insulation inside the concrete,and maintains the internal fully humidified water storage material,which can effectively alleviate the self-shrinkage of the concrete.It mainly introduces the classification of concrete curing agent and its application in concrete.The curing a gent is mainly divided into inorganic internal curing agent(light aggregate,porous ultrafine powder),organic internal curing agent(superabsorbent polymer)and organic-inorganic internal curing agent.Summarize the main factors affecting water absorption performance,including their composition and structural characteristics.In addition,it also systematically discusses the effects of curing agents in different materials on the self-shrinkage,drying shrinkage and strength of concrete.Finally,briefly summarizes the problems existing in the research of internal curing agents and forecasts some possible research directions in the future.