硅酸盐通报2025，Vol.44Issue(5)：1726-1733,1754,9.DOI:10.16552/j.cnki.issn1001-1625.2024.1430
矿粉和粉煤灰掺量对可控性低强度材料(CLSM)性能的影响
Influences of Ground Granulated Blast Furnace Slag and Fly Ash Dosages on Performance of Controlled Low Strength Materials(CLSM)
摘要
Abstract
Controlled low strength materials(CLSM)were prepared by using different proportions of ground granulated blast furnace slag(GGBS)and fly ash(FA)mixed with sandy soil and decoration wastes.This paper studied the influences of GGBS and FA dosages on the fluidity,bleeding rate,setting time and compressive strength of CLSM.The effects of GGBS and FA dosages on the phase composition and micromorphology of CLSM were explored by XRD and SEM.The results show that with the increase of GGBS and FA in CLSM,the bleeding rate decreases,and the setting time shortens.When FA dosage remains unchanged,and GGBS increases from 150 g to 270 g,the 3 d compressive strength of CLSM increases from 2.01 MPa to 4.00 MPa,and the 28 d compressive strength increases from 6.83 MPa to 11.12 MPa.When GGBS dosage remains unchanged,and FA changes from 120 g to 240 g,the 3 d compressive strength increases from 2.41 MPa to 3.13 MPa,and the 28 d compressive strength increases from 6.65 MPa to 10.24 MPa.GGBS and FA increase the compactness of CLSM as more calcium silicate hydrate(C-S-H)and calcium silicaluminate hydrate(C-A-S-H)are produced.关键词
可控性低强度材料/矿粉/粉煤灰/抗压强度/微观结构Key words
controlled low strength material/ground granulated blast furnace slag/fly ash/compressive strength/microstructure分类
建筑与水利引用本文复制引用
王宁宁,胡康飞,包益鋆,张文文,卜静武,陈徐东..矿粉和粉煤灰掺量对可控性低强度材料(CLSM)性能的影响[J].硅酸盐通报,2025,44(5):1726-1733,1754,9.基金项目
国家自然科学基金(52379124) （52379124）
