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Journal of Applied Sciences
Year: 2011  |  Volume: 11  |  Issue: 17  |  Page No.: 3185 - 3191

Influence of Fly Ash on Behavior of Fibres Reinforced Concrete Structures

Falah M. Wegian, Anwar A. Alanki, Hana M. AlSaeid, Fahad A. Alotaibi, Mubarak S. Al-Mitairi and Fahad A. Kandari    

Abstract: Steel fibre and fly ash are common cement additives that can improve concrete performance. The aim of this study was to measure compressive and tensile strengths of concrete with different steel fibre and fly ash percentages. Concrete specimens with fibre contents of 0.50, 1.0 and 1.50% by volume were tested. Fly ash contents in mixes ranged between 0 and 30% by weight. Sixteen concrete mixes were prepared. A hydraulic testing machine was used to measure the compressive and flexural strength of each block. The result of this study confirmed that the addition of steel fibre has a negligible effect on the compressive strength of concrete. However, it can dramatically improve flexural strength. This occurs when the volume of the fibres exceeds the minimum percentage required to prevent brittle failure of the concrete matrix.

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