硅酸盐通报2025，Vol.44Issue(9)：3188-3195,3206,9.DOI:10.16552/j.cnki.issn1001-1625.2025.0218
基于水膜厚度的高强自密实混凝土水泥浆体流变性能评价
Evaluation of Rheological Properties of High-Strength Self-Compacting Concrete Cement Paste Based on Water Film Thickness
摘要
Abstract
To investigate the effect of ultrafine fly ash(UFA)on the rheological properties of cement paste in high-strength self-compacting concrete(HSSCC),this study tested the influences of different UFA dosages on the fluidity,rheological properties,packing density,and water film thickness(WFT)of C60 and C80 HSSCC cement pastes.The results show that when the UFA dosage is 15％(mass fraction),the fluidity of both cement pastes reaches their maximum,while the yield stress,apparent viscosity,and thixotropy reach their minimum.At this dosage,the packing density of both cement pastes is also at their highest.The packing density of C80 HSSCC cement paste is higher than that of C60 HSSCC cement paste,whereas the WFT of C80 HSSCC cement paste is lower than that of C60 HSSCC cement paste.Specifically,the WFT of C60 HSSCC cement paste is 0.195 7 μm,while that of C80 HSSCC cement paste is 0.037 1 μm.Polynomial regression fitting reveals a strong correlation between WFT and the yield stress of cement paste.关键词
超细粉煤灰/水泥浆体/流变性能/屈服应力/填充密实度/水膜厚度Key words
ultrafine fly ash/cement paste/rheological property/yield stress/packing density/water film thicknes分类
建筑与水利引用本文复制引用
胡延燕,谢冰倩,赵冰..基于水膜厚度的高强自密实混凝土水泥浆体流变性能评价[J].硅酸盐通报,2025,44(9):3188-3195,3206,9.基金项目
国家自然科学基金(52208287) （52208287）
