基于材料种类的视角下SAP内养护水泥的基本性能研究  

Study on the basic performances of cement internal cured by SAP based on the material varieties

作　　者：王豪杰 邓荣荣 刘荣桂[2] 谢晨 段兆文 曹颖 WANG Haojie;DENG Rongrong;LIU Ronggui;XIE Chen;DUAN Zhaowen;CAO Ying(Tianping College of Suzhou University of Science and Technology,Suzhou 215009,China;Department of Civil Engineering,Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]苏州科技大学天平学院,江苏苏州215009 [2]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《混凝土》2024年第9期141-144,162,共5页Concrete

基　　金：国家自然科学基金(51778272);苏州科技大学天平学院科研基金(2023TZKA-02,2020TKJB-01);江苏省大学生创新创业训练计划项目(202213985024Y)。

摘　　要：为了研究SAP种类对水泥性能的影响,将3种类型(B、C、D)SAP分别与P·S32.5级水泥和P·O42.5级水泥耦合作用,从宏观和微观两个角度对水泥的基本性能进行分析。结果表明:B类SAP优于C类和D类SAP;B类SAP能够提高水泥的胶砂抗折强度,降低抗压强度;C类和D类SAP均使得水泥胶砂强度降低。掺入SAP能够增加两种水泥的标准稠度用水量并延长初凝和终凝时间。SAP内养护作用能够在水泥浆体内部形成“储水释水库”,从而改善水泥的基本性能,为后续的工程应用提供理论依据。In order to study the effects of SAP types on different cements,three types of SAP:B,C and D,were coupled with 32.5 grade slag-type silicate cement and 42.5 grade ordinary silicate cement to analyze the basic properties of cements from both macroscopic and microscopic perspectives.The results show that SAP of type B is superior to type C and D.SAP of type B can improve the flexural strength of cement mortar and reduce the compressive strength.Both SAP of type C and D reduce the strength of cement mortar.In addition,the incorporation of SAP can increase the standard consistency water consumption of both cements and prolong the initial and final setting time.In summary,the SAP internal conservation effect can form a“water storage and release reservoir”inside the cement paste,thus improving the basic properties of cement and providing a theoretical basis for subsequent engineering applications.

关 键 词：水泥 高吸水性树脂 力学性能 凝结时间 微观分析 

分 类 号：TU528.041[建筑科学—建筑技术科学]