Pullout Behaviour of Different Types of Steel Fibres Embedded in Magnesium Phosphate Cementitious Matrix

被引：20

作者：

Feng, Hu ^{[1
]}

Sheikh, M. Neaz ^{[2
]}

Hadi, Muhammad N. S. ^{[2
]}

Feng, Lu ^{[3
]}

Gao, Danying ^{[1
]}

Zhao, Jun ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Henan, Peoples R China

[2] Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW 2522, Australia

[3] Yellow River Engn Consulting Co Ltd, Zhengzhou 450003, Henan, Peoples R China

来源：

INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS | 2019年 / 13卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

steel fibre; pullout; magnesium phosphate cement; failure mode; group effect; RAPID REPAIR; MECHANICAL-PROPERTIES; BOND; MICROSTRUCTURE; PERFORMANCE; COMPOSITES; TOUGHNESS; MORTARS; BINDER;

D O I：

10.1186/s40069-019-0344-1

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A series of pullout tests were conducted to investigate the interface bond properties of seven types of steel fibres embedded in the magnesium phosphate cementitious matrix. The micromorphology of the interface transition zone between MPC and different types of fibres was examined by scanning electron microscope. Test results showed that smaller diameter steel fibres with brass coating surface achieved higher average bond strength, higher pullout energy per unit volume and a higher ratio of material use. The end hook deformation provided the mechanical bond locally whereas the deformation along the length of fibre provided the mechanical bond distributed along the fibre. The failure mode and group effect of steel fibres were also investigated and reported.

引用

页数：17

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