Comparative study of steel fibre-reinforced concrete and steel mesh-reinforced concrete at early ages in panel tests

被引：42

作者：

Ding, YN ^{[1
]}

Kusterle, W ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Bldg Mat & Mat Testing, A-6020 Innsbruck, Austria

来源：

CEMENT AND CONCRETE RESEARCH | 1999年 / 29卷 / 11期

关键词：

fibre-reinforced concrete; steel fibre; steel mesh; early age; panel test;

D O I：

10.1016/S0008-8846(99)00177-5

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Recently it has become more and more common to replace steel reinforcement with steel-fibre reinforced concrete/shotcrete in underground constructions. It is therefore of great importance to compare the behaviour of steel-fibre reinforced concrete and conventional steel-reinforced concrete. In cases of shotcrete at the tunnel face, it is important to obtain a fast stabilizing effect. To avoid damage to the shotcrete caused by blasting or drilling for bolts, it is also important to obtain high early strength. Compared to the actual strength, the tunnel shell is loaded to the highest degree during the first advance founds after spraying, and therefore most failures occur at early ages. To evaluate the development of punching sheer and flexural ductility for panels, experimental investigations were preformed on laboratory concrete in accordance with EFNARC. The measurements were taken at the earliest age of the specimen possible, about 10 h, and continued up to 48 h. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1827 / 1834

页数：8