硅酸盐通报2026，Vol.45Issue(4)：1175-1183,9.DOI:10.16552/j.cnki.issn1001-1625.2025.0968
纤维素醚对衬砌混凝土力学与工作性能的影响
Influence of Cellulose Ether on Mechanical and Workability Properties of Lining Concrete
摘要
Abstract
In this paper,the applicability of hydroxypropyl methyl cellulose ether(abbreviated as cellulose ether)in large-flow lining concrete was studied,and its influence on the fresh mixing properties,rheological properties and compressive strength of concrete was evaluated.The microscopic mechanism was revealed by means of TGA-DTG,SEM and nanoindentation.The results show that the thickening effect of cellulose ether leads to the decrease of slump and expansion of lining concrete,but effectively inhibits the time loss of lining concrete.The time loss of slump and expansion can be reduced by 75.0％and 66.7％respectively when the cellulose ether content is 0.12％(mass fraction),and the anti-segregation performance of lining concrete is improved.Cellulosic ether improves the anti-flowability of lining concrete,makes it more difficult to shear deformation,and shows stronger thixotropy and water retention capacity.The incorporation of cellulose ether has a positive effect on the compressive strength of lining concrete.The addition of 0.03％～0.12％cellulose ether can increase the 28 d compressive strength of lining concrete by 7.6％～23.6％.In addition,cellulose ether improves the hydration degree of cement,increases the content of hydration products,makes the microstructure of the sample surface denser,and increases the content of low density and high density calcium silicate hydrate(C-S-H)gel.Therefore,the comprehensive performance of lining concrete is improved.关键词
衬砌混凝土/羟丙基甲基纤维素醚/新拌性能/流变性能/抗压强度Key words
lining concrete/hydroxypropyl methyl cellulose ether/fresh mixing property/rheological property/compressive strength分类
建筑与水利引用本文复制引用
王解放,许德金,李胜,任万里,陈佩圆..纤维素醚对衬砌混凝土力学与工作性能的影响[J].硅酸盐通报,2026,45(4):1175-1183,9.基金项目
中国施工企业管理协会科研项目(2023-C-132) （2023-C-132）
