稻壳灰与SAP协同内养护对碱激发矿渣胶凝材料性能的影响  

Effect of Synergistic Internal Curing by Rice Husk Ash and SAP on Properties of Alkali-Activated Slag Cementitious Materials

作　　者：吕阳[1] 吴远帅 葛云露 陈扬[1] 许金生 蹇守卫[1] 但建明[2] 温小栋 李相国[1,2,3] LYU Yang;WU Yuanshuai;Ge Yunlu;CHEN Yang;XU Jinsheng;JIAN Shouwei;DAN Jianming;WEN Xiaodong;LI Xiangguo(State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory Incubation Base for Green Processing of Chemical Engineering,School of Chemistry and Chemical Engineering,Shihezi University,Shihezi 832003,China;School of Civil and Transportation Engineering,Ningbo University of Technology,Ningbo 315211,China)

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]石河子大学化学化工学院化工绿色过程省部共建国家重点实验室培育基地,石河子832003 [3]宁波工程学院建筑与交通工程学院,宁波315211

出　　处：《硅酸盐通报》2025年第2期634-641,共8页Bulletin of the Chinese Ceramic Society

基　　金：兵团重点科技攻关计划(2023AB013-03);八师石河子市科技计划项目(2022GY01)。

摘　　要：早期自收缩大和开裂风险高是限制碱激发矿渣(AAS)胶凝材料推广应用的重要难题,利用高吸水树脂(SAP)进行内养护是解决这些问题的有效方法之一,但这种方法会降低AAS的力学性能。本研究将多孔活性稻壳灰(RHA)与SAP复配形成复合内养护组分(SAP-RHA,SR),对比分析了SR与SAP内养护对AAS工作性能、收缩特性、水化产物及力学性能的影响。结果表明,相比于单独使用SAP内养护,SR内养护不仅进一步降低了AAS的自收缩,还有效提高了AAS的抗压强度,在一定程度上解决了SAP内养护所导致的力学性能降低的问题。Large early autogenous shrinkage and high cracking risk are important problems that limit the popularization and application of alkali-activated slag(AAS)cementitious materials.The use of superabsorbent polymer(SAP)for internal curing is one of the effective methods to solve these problems,but this method will reduce the mechanical properties of AAS.In this study,porous active rice husk ash(RHA)and SAP were combined to form a composite internal curing component(SAP-RHA,SR).The effects of SR and SAP internal curing on the working performance,shrinkage characteristics,hydration products and mechanical properties of AAS were compared and analyzed.The results show that compared with SAP internal curing alone,SR internal curing not only further reduces the autogenous shrinkage of AAS,but also effectively improves its compressive strength,which solves the problem of mechanical properties reduction caused by SAP internal curing to a certain extent.

关 键 词：碱激发矿渣 高吸水树脂 稻壳灰 自收缩 抗压强度 

分 类 号：TU525[建筑科学—建筑技术科学]