常温下型钢与超高性能混凝土基体界面粘接性能影响分析  

Study of interfacial bonding properties between steel sections and ultra-high performance concrete matrix at room temperature

作　　者：赵军卫 ZHAO Junwei(Xi’an Branch of Benchmark Fangzhong Architectural Design Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]基准方中建筑设计股份有限公司西安分公司,陕西西安710054

出　　处：《粘接》2023年第6期45-47,共3页Adhesion

摘　　要：目前超高纤维混凝土(UHPC)多由硅酸盐、灰石以及石英砂和型钢纤维等材料组成,相较于传统的混凝土材料,UHPC在配比的过程中剔除了粗骨料,提升了材料内部分子结构的匀质性,其相较普通混凝土具有更好的拉伸强度以及耐久性。为改善型钢纤维以及UHPC之间的界面粘接性也成为国内外的研究重点。通过添加型钢纤维改善超高性能混凝土的力学性能,使其满足不同的建筑工程需要,阐述了界面粘接性能测定的方法以及对常温环境下型钢与超高性能混凝土界面粘接性能的影响因素,旨在为超高性能混凝土基体改性和优化应用提供参考。At present,UHPC is mainly composed of silicate,limestone,quartz sand and steel fiber.Compared with traditional concrete materials,UHPC eliminates coarse aggregate in the mixing process,and the uniformity of the molecular structure in the material is enhanced.Ultra-high performance concrete has better tensile strength and durability compared to ordinary concrete.Improving the interface adhesion between steel fiber and UHPC has also become the research focus at home and abroad.The mechanical properties of ultra-high performance concrete can be improved by adding steel fibers to meet the installation needs of construction projects.This paper introduces the method of bond determination and the factors affecting the interfacial bond between steel sections and ultra-high performance concrete at room temperature,with the aim of providing a reference for the modification and optimization of ultra-high performance concrete matrix.

关 键 词：型钢纤维 超高性能混凝土 粘结性能 

分 类 号：TU375[建筑科学—结构工程] TQ437.1[化学工程]