Synergistic effect of silica fume and hydrated lime on mechanical properties of re-cycled aggregate concrete
Abstract
为提升废弃混凝土资源化利用效率,系统探究了硅灰与熟石灰单掺及复合改性对再生混凝土力学性能的影响。采用三重搅拌技术(triple mixing,TM),通过抗压试验和劈裂抗拉试验,研究再生混凝土的基本力学性能,并借助扫描电子显微镜(scanning electron microscope,SEM)解析其微观结构特征。结果表明:单掺硅灰或熟石灰对再生混凝土的抗压强度与劈裂抗拉强度提升有限,复合硅灰与熟石灰对其提升效果显著。微观分析显示,复合体系中的微观结构致密程度显著提高,骨料与浆体的粘接强度增强。研究成果可为再生粗骨料的应用提供参考。
Fields of Study & Subjects
Recycled Aggregate Concrete Performance
Concrete and Cement Materials Research
Materials Engineering and Processing
Publication details
- Journal / source
- Natural Science of Hainan University
- Volume
- 44
- Issue
- 1
- Pages
- 51–51
- Publication date
- 1 January 2026
- Language
- ZH