Application of nanoindentation testing to study of the interfacial transition zone in steel fiber reinforced mortar

被引：227

作者：

Wang, Xiao Hui ^{[1
]}

Jacobsen, Stefan ^{[2
]}

He, Jian Ying ^{[2
]}

Zhang, Zhi Liang ^{[2
]}

Lee, Siaw Foon ^{[2
]}

Lein, Hilde Lea ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Civil Engn, Shanghai 200240, Peoples R China

[2] Norwegian Univ Sci & Technol, Fac Engn Sci & Technol, Dept Struct Engn, N-7491 Trondheim, Norway

[3] Norwegian Univ Sci & Technol, Fac Engn Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway

来源：

CEMENT AND CONCRETE RESEARCH | 2009年 / 39卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Nanoindentation; Scanning Electron Microscopy (SEM); Interfacial transition zone (ITZ); Elastic modulus and hardness; Steel fiber reinforced mortar; C-S-H; CEMENT-BASED MATERIALS; MECHANICAL-PROPERTIES; ELASTIC-MODULUS; FAILURE BEHAVIOR; SILICA FUME; CONCRETE; PASTE; BOND; COMPOSITES;

D O I：

10.1016/j.cemconres.2009.05.002

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The characteristics of the profiles of elastic modulus and hardness of the steel fiber-matrix ana fiber-matrix-aggregate interfacial zones in steel fiber reinforced mortars have been investigated by using nanoindentation and Scanning Electron Microscopy (SEM), where two sets of parameters, i.e. water/binder ratio and content of silica fume were considered. Different interfacial bond conditions in the interfacial transition zones (ITZ) are discussed. For sample without silica fume, efficient interfacial bonds across the steel fiber-matrix and fiber-matrix-aggregate interfaces are shown in low water/binder ratio mortar; while in high water/binder ratio mortar, due to the discontinuous bleeding voids underneath the fiber, the fiber-matrix bond is not very good. On the other hand, for sample with silica fume, the addition of 10% silica fume leads to no distinct presence of weak 117 in the steel fiber-matrix interface; but the effect of the silica fume on the steel fiber-matrix-aggregate interfacial zone is not obvious due to voids in the vicinity of steel fiber. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：701 / 715

页数：15

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