混凝土内养护剂高吸水树脂及其最新研究进展  

Super-absorbent polymer for concrete internal curing agent and its latest research progress

作　　者：夏慧芸[1] 张耿通 赵旭 刘冠宇 宋莉芳[1] 陈华鑫[1] XIA Huiyun;ZHANG Gengtong;ZHAO Xu;LIU Guanyu;SONG Lifang;CHEN Huaxin(Engineering Research Center of Transportation Materials,Ministry of Education,College of Materials Science and Engineering,Chang′an University,Xi′an 710064,China)

机构地区：[1]长安大学材料科学与工程学院,交通铺面材料教育部工程研究中心,陕西西安710064

出　　处：《混凝土》2020年第12期85-89,共5页Concrete

基　　金：国家重点研发计划子课题“高原复杂环境下混凝土裂缝控制技术及工程示范”(2017YFB0309903-02);国家自然科学基金(51202016,51502021);陕西省自然科学基础研究计划(2017JQ2025,2017JQ2003);科技部863计划长安大学卓越基金(310831163501);中国博士后科学基金(2015M582592);西安市科技厅计划项目(2017137SF/WM031)。

摘　　要：首先综述了混凝土内养护剂常用高吸水树脂(SAP)类别、合成方法、吸-释水性能及其测定方法,其次从SAP的形貌、粒径,水化热,孔结构、混凝土内部相对湿度等方面总结了SAP对混凝土力学性能、自收缩和耐久性的影响,并对SAP的内养护机理进行阐述,最后对高吸水树脂作为内养护材料的进一步发展应用提出了展望。Firstly,the categories,synthetic methods,absorbent and water release properties of internal curing agents(SAP)were reviewed.Secondly,the effects of SAP on the mechanical properties,autogenous shrinkage and durability of concrete were summarized from the aspects of SAP′s morphology,particle size,relative humidity,hydration heat and pore structure,furthermore,the internal curing mechanism of SAP is analyzed.Finally,the prospect of further development and application of SAP as internal curing material is proposed.

关 键 词：内养护 吸-释水 力学性能 耐久性 自收缩 

分 类 号：TU528.042[建筑科学—建筑技术科学]