长春工程学院学报（自然科学版）2024，Vol.25Issue(2)：19-22,4.DOI:10.3969/j.issn.1009-8984.2024.02.004
超高强度混凝土钢纤维黏结性能研究
Research on the Adhesion of Steel Fiber in Ultra-High Performance Concrete
摘要
Abstract
The adhesion between steel fibers and concrete matrix is the key to stress conversion and crack control,and can significantly affect the mechanical properties of Ultra-High Performance Concrete(UH-PC).To enhance the adhesion of steel fibers,a Microorganism Induced Calcite Precipitation(MICP)tech-nique is proposed to pretreat the surface of steel fibers.The research results indicate that MICP not only generates calcium carbonate crystals on the surface of steel fibers,but also leads to an increase in roughness of steel fibers.It also improves the adhesion and drawing performance of steel fibers,allowing hydration products to adhere to the surface of the fibers.The microscopic results indicate that MICP technique can enhance the adhesion behavior between steel fibers and matrix.Therefore,MICP technique can increase the compressive strength and flexural strength of UHPC by 16％ and 50％ respectively by treating steel fi-bers.The application of MICP technique in UHPC can help improve the adhesion performance of steel fi-bers.关键词
微生物/混凝土/钢纤维/黏结性能Key words
microorganism/concrete/steel fiber/adhesion performance分类
建筑与水利引用本文复制引用
汪菊,秦佳俊..超高强度混凝土钢纤维黏结性能研究[J].长春工程学院学报（自然科学版）,2024,25(2):19-22,4.基金项目
安徽省教育厅2021年优质继续教育网络课程(2021tzpy41)安徽省教育厅2022年教研项目(2022jyxm238)安徽省教育厅2022年高校优秀青年骨干教师国内访问研修项目(gxgnfx2022190) （2021tzpy41）
