Mechanical behaviour of steel fibre-reinforced alkali activated slag concrete

被引：20

作者：

Bernal, S. ^{[1
]}

Mejia de Gutierrez, R. ^{[1
]}

Rodriguez, E. ^{[1
]}

Delvasto, S. ^{[1
]}

Puertas, F. ^{[2
]}

机构：

[1] Univ Valle, Cali, Colombia

[2] Inst Ciencias Construcc Eduardo Torroja CSIC, Madrid, Spain

来源：

MATERIALES DE CONSTRUCCION | 2009年 / 59卷 / 293期

关键词：

akali-activated slag concretes; steel fibre; mechanical strength; STRENGTH; MICROSTRUCTURE;

D O I：

10.3989/mc.2009.41807

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study addressed the mechanical behaviour of a steel fibre-reinforced alternative concrete made from water-glass (Na2SiO3 center dot nH(2)O + NaOH)- activated Colombian blast furnace slag. The mixes studied were prepared with 400 kg of cement and the fibres were added in proportions of 40 and 120 kg per cubic metre of concrete. 7-, 14- and 28-day concrete was tested for compressive, splitting tensile and flexural strength. The results obtained showed that adding steel fibre to alkaline concrete lowered early age compressive strength, and that this decline was more intense with rising volumes of steel. Flexural and splitting tensile strength grew, however, enhancing the toughness of the material. As a general rule, the mechanical strength of the plain and fibre-reinforced alkaline concretes studied was higher than exhibited by conventional ordinary Portland cement concrete prepared with similar proportions of cement and fibre.

引用

页码：53 / 62

页数：10

共 34 条

[31] Microstructure and mechanical properties of waste fibre-cement composites [J].