粉煤灰-矿粉基预应力孔道压浆料制备及性能研究  

Study on the Influence of Fly Ash and Mineral Powder on the Performance of Prestressed Duct Grouting Material

作　　者：谢宇尚 李永铃 姚晓军 舒本安 杨腾宇 任彦飞 Xie Yushang;Li Yongling;Yao Xiaojun;Shu Benan;Yang Tengyu;Ren Yanfei(Foshan Jianying Development Co.Ltd.,Foshan,Guangdong 528000;Foshan Transportation Science and Technology Co.Ltd.,Foshan,Guangdong 528000)

机构地区：[1]佛山市建盈发展有限公司,广东佛山528000 [2]佛山市交通科技有限公司,广东佛山528000

出　　处：《江西建材》2023年第5期74-76,共3页Jiangxi Building Materials

基　　金：交通运输行业重点科技项目《特大跨径宽幅钢-UHPC轻型化组合箱梁斜拉桥关键技术研究及应用》(项目编号:2020-MS1-003)。

摘　　要：文中研究了不同掺量粉煤灰、矿粉对预应力孔道压浆料流动性、泌水性及力学性能的影响。研究表明,粉煤灰的掺入可大幅度提高压浆料的流动性,适当掺入矿粉可大幅度提高压浆料的力学性能和泌水性,粉煤灰、矿粉复掺比例为3︰2,整体掺量为30%的情况下,可制备得到流动性、泌水性、密实性、力学性能优异的粉煤灰-矿粉基预应力孔道压浆料。In this paper,the effects of different amounts of fly ash and mineral powder on the fluidity,bleeding and mechanical properties of pre-stressed duct grouting materials are studied.The research shows that the addition of fly ash can greatly improve the fluidity of the grouting material,and the appropriate addition of mineral powder can greatly improve the mechanical properties and bleeding properties of the grouting material.When the ratio of fly ash and mineral powder is 3︰2,and the overall content is 30%,the fly ash-mineral powder based prestressed duct grouting material with excellent fluidity,bleeding,compactness and mechanical properties can be prepared.

关 键 词：预应力孔道压浆料 粉煤灰 矿粉 流动性 泌水性 力学性能 

分 类 号：U444[建筑科学—桥梁与隧道工程]