废弃物料对灌浆料力学性能影响的试验研究
Experimental Study on the Effect of Waste Materials on the Mechanical Properties of Grouting Materials
张会芳 1龚琳洋 2颜政伟 2陶雪臣 2郑妍 2王逸辰2
作者信息
- 1. 河北建筑工程学院,河北张家口 075000;河北省装配式建筑与地下工程技术创新中心,河北张家口 075000
- 2. 河北建筑工程学院,河北张家口 075000
- 折叠
摘要
为提高铁尾矿砂和固体废弃物的利用率,选用铁尾矿砂部分取代石英砂、粉煤灰和矿渣部分的方式制备水泥基灌浆料.采用正交试验方法,对水胶比、胶砂比、铁尾矿砂掺量、粉煤灰及矿渣掺量五个因素进行研究.试验结果表明:所制备灌浆料的流动度都满足大于260mm的要求且各因素水平对灌浆料抗折、抗压强度产生不同影响.正交试验中,水胶比对灌浆料抗折、抗压强度的影响程度最大,以灌浆料28d抗压强度作为极差分析的主要指标强度,确定28d抗压强度的最优因子水平组合为A1B2C4D1E2,即水胶比0.33、胶砂比1∶1.0、铁尾矿砂掺量20％、粉煤灰掺量4％、矿渣掺量为6％.
Abstract
In order to improve the utilization rate of iron tailings sand and solid waste,iron tailings sand was selected to partially replace quartz sand,and fly ash and slag were selected to partially replace cement to prepare cement-based grout.In this paper,the orthogonal test method is used to study the five factors of water binder ratio,binder sand ratio,iron tailings sand content,fly ash and slag content.The test results show that the fluidity of the prepared grouting material meets the re-quirements of more than 260mm;Each factor level has different effects on the flexural and com-pressive strength of grouting materials.In the orthogonal test,the water binder ratio has the grea-test influence on the flexural and compressive strength of the grouting material.Taking the 28d compressive strength of the grouting material as the main index strength of the range analysis,it is determined that the optimal factor level combination of the 28d compressive strength is a1b2c4d1e2,that is,the water binder ratio is 0.33,the cement sand ratio is 1∶1.0,the iron tailings sand content is 20％,the fly ash content is 4％,and the slag content is 6％.
关键词
灌浆料/铁尾矿砂/固体废弃物/正交试验/极差分析Key words
Grouting material/Iron tailings sand/Solid waste/Orthogonal experiment/Range analysis引用本文复制引用
基金项目
河北省教育厅科学研究项目资助(CXY2024002)
河北建筑工程学院硕士研究生创新基金项目(XY2023062)
出版年
2024
NETL
NSTL
万方数据