硅酸盐通报2025，Vol.44Issue(5)：1717-1725,9.DOI:10.16552/j.cnki.issn1001-1625.2024.1386
粉煤灰掺量对碱激发材料干燥收缩及抗压强度的影响
Effect of Fly Ash Content on Drying Shrinkage and Compressive Strength of Alkali-Activated Materials
付振博 1杨曦昊 2赵伊萌 1刘云鹏 2李世纪 1李秉函 1赵淑丽 1王磊3
作者信息
- 1. 河北农业大学城乡建设学院,保定 071001
- 2. 北京科技大学材料科学与工程学院,北京 100083
- 3. 中绎建设科技集团有限公司,石家庄 050000
- 折叠
摘要
Abstract
Alkali-activated materials are considered as potential alternatives to Portland cement.However,their high shrinkage rate remains a critical issue limiting widespread application.This study investigated the relationship between drying shrinkage and water loss rate of alkali-activated slag-fly ash paste.It examined the effect of fly ash content on compressive strength,reaction products,microstructure and hydration heat.The results show that with the increase of fly ash content,both drying shrinkage and water loss rate of alkali-activated slag increase.The fly ash content significantly affects the compressive strength of alkali-activated slag paste.In the early hydration stage(0～14 d),samples without fly ash exhibit higher compressive strength.However,in the later stage(14～28 d),samples with 20％(mass fraction)and 30％fly ash show a significant increase in strength.When the fly ash content is 20％a nd 30％ and the Ca/Si ratio(molar ratio)is close to 1,it ensures strength development while reducing drying shrinkage and water loss rate.关键词
胶凝材料/碱激发/粉煤灰掺量/干燥收缩/抗压强度Key words
cementitious material/alkali-activation/fly ash content/drying shrinkage/compressive strength分类
化学化工引用本文复制引用
付振博,杨曦昊,赵伊萌,刘云鹏,李世纪,李秉函,赵淑丽,王磊..粉煤灰掺量对碱激发材料干燥收缩及抗压强度的影响[J].硅酸盐通报,2025,44(5):1717-1725,9.
