多元固废地聚物干粉砂浆制备与性能研究  

STUDY ON PREPARATION AND PROPERTIES OF MULTI-COMPONENT SOLID WASTE GEOPOLYMER DRY POWDER MORTAR

作　　者：李树峰 邓凯 阎胜利 宋帅 牛玺荣[3,4] 杨晶 LI Shu-feng;DENG Kai;YAN Sheng-li;SONG Shuai;NIU Xi-rong;YANG Jing(Shanxi Construction Investment Group Co.,Ltd.,030032,Taiyuan,China;College of Civil Engineering,Taiyuan University of Technology,030024,Taiyuan,China;School of Electric Power and Civil Engineering,Shanxi University,030031,Taiyuan,China;Trial-produce Center for Smart Building and Green Construction Technology of Shanxi Province,030031,Taiyuan,China)

机构地区：[1]山西建设投资集团有限公司,太原030032 [2]太原理工大学土木工程学院,太原030024 [3]山西大学电力与建筑学院,太原030031 [4]山西省智慧建筑与绿色建造技术中试基地,太原030031

出　　处：《建筑技术》2025年第1期117-121,共5页Architecture Technology

基　　金：国家级大学生创新创业训练项目(202210108021);山西省大学生创新创业训练项目(S202210108053);山西建设投资集团有限公司科技项目(DQ–JT002)。

摘　　要：为实现工业固废应用于实体工程中,实现废物利用、节能减排的目标,以粉煤灰、粒化高炉矿渣粉、电石渣为主要原料,在室温条件下采用固体碱激发剂制备了地聚物干粉砂浆。以原粉煤灰和细粉煤灰掺量比、矿渣掺量、电石渣掺量和碱激发剂掺量为因子设计正交试验,通过测试地聚物干粉砂浆的力学性能,得出干粉砂浆的最佳配合比;通过最优配合比制备M10等级的砂浆,并进行微观分析,揭示强度增强机理。结果表明:当原粉煤灰与细粉煤灰的比例为2∶8、粉煤灰与矿渣的掺加比例为9∶1、电石渣掺量为6%、激发剂掺量为2%时,M10等级砌筑砂浆的7 d抗压强度为11.9 MPa,28 d抗压强度达到15.9 MPa,保水性和稠度均符合现行规范要求。结合SEM分析表明,地聚物砂浆中生成大量C–(A)–S–H和N–A–S–H凝胶产物,促使样品结构紧密、砂浆强度显著提升。In order to realize the application of industrial solid waste in solid projects,and achieve the goal of waste utilization,energy conservation and emission reduction,the dry mortar was prepared with fly ash,granulated blast furnace slag and the main raw materials of fly ash and silicon ash at room temperature.Orthogonal experiments were designed with the ratio of raw fly ash to fine fly ash,slag,silica fume and alkali activator as factors.The optimal mix ratio of dry mortar was obtained by testing the mechanical properties of dry mortar;M10 grade mortar is prepared by the optimal mix ratio,and microscopic analysis to explain the strength enhancement mechanism.The results show that when the ratio of original powder and fine powder is 2:8,the mixing ratio of fly ash and slag is 9:1,the amount of silicon ash is 6%,and the amount of excitation agent is 2%,the compressive strength of 7 d of M10 grade masonry mortar is 11.9 MPa,the compressive strength of 28 d is 15.9 MPa,and water retention and consistency meet the requirements of current specifications.Combined with SEM analysis,it is shown that a large number of C–(A)–S–H and N–A–S–H gel products are generated in the geopolymer mortar,which makes the sample structure compact and the mortar strength significantly improved.

关 键 词：粉煤灰 粒化高炉矿渣粉 地聚物 干粉砂浆 

分 类 号：TU74[建筑科学—建筑技术科学]