矿渣——粉煤灰地聚物注浆材料的制备及性能优化研究  

Research on Preparation and Performance Optimization of Slag-Fly Ash Geopolymer Grouting Material

作　　者：王波[1] 文华[2] WANG Bo;WEN Hua(Mianyang Polytechnic,Mianyang 621000,China;School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]绵阳职业技术学院,四川绵阳621000 [2]西南科技大学土木工程与建筑学院,四川绵阳621000

出　　处：《金属矿山》2023年第3期274-278,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:51108393);国家自然科学基金青年基金项目(编号:11902279)。

摘　　要：为了降低注浆材料中水泥的使用和开发新型的注浆材料,以粉煤灰和矿渣为前驱体,采用碱激发的方式制备了地质聚合物注浆材料。采用聚丙烯纤维对注浆材料性能进行优化,研究了纤维对地质聚合物注浆材料工作性、力学性能和微观结构的影响。研究结果表明:添加纤维可以提高地质聚合物注浆材料的凝结时间和降低材料的流动性;纤维的掺入显著提高了地质聚合物注浆材料的抗压强度、抗折强度和抗冻性能,同时纤维还能降低材料的干燥收缩率;综合试验结果得出纤维的最优掺量为3%。微观结构测试结果表明添加纤维后,地质聚合物注浆材料的微观结构更加均匀和致密。纤维可以作为地质聚合物注浆材料中的微集料以优化材料的性能。In order to reduce the use of cement in grouting materials and develop new grouting materials,fly ash and slag as the precursor,using alkali excitation method to prepare geopolymer grouting materials.The polypropylene fiber was added for performance optimization of grouting material,and the effects of polypropylene fiber on the workability,mechanical properties and microstructure of geopolyolytic grouting materials were studied.The results showed that the addition of fiber can increase the setting time and decrease the fluidity of geopolymer grouting material.The addition of fiber can significantly improve the compressive strength,flexural strength and frost resistance of geopolyster grouting material,and reduce the drying shrinkage rate of the material.Comprehensive test results showed that the optimal fiber content is 3%.The microstructure test results showed that the microstructure of geopolymer grouting material is more uniform and compact after adding fiber.Fiber can be used as micro-aggregate in geopolymer grouting material to optimize the properties of the material.

关 键 词：注浆材料 碱激发 地质聚合物 聚丙烯纤维 微观结构 

分 类 号：TU52[建筑科学—建筑技术科学]