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An Investigation On Strength Properties Of Glass Fiber Reinforced Concrete


An Investigation On Strength Properties Of Glass Fiber Reinforced  Concrete
Authors : Liaqat A. Qureshi, Adeel Ahmed
Publication Date: 29-04-2013

Authors

Author(s):  Liaqat A. Qureshi, Adeel Ahmed

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol.2 - Issue 4 (April - 2013)

e-ISSN:   2278-0181

Abstract

It is well known fact that plain concrete is brittle in nature; it has low tensile strength and less ductility. Moreover, plain concrete suffers from cracking due to drying shrinkage and various other causes. It has been found that the use of fibers in plain concrete controls shrinkage cracking to a some extent and also improves the tensile properties of concrete. Glass fibers serve the similar purpose with an additional advantage of being used in ornamental concrete This material is alakali resistant and less dense than steel, so the final product known as °∆glass fiber reinforced concrete (GFRC)°«, is lightweight but strong. GFRC is composed of fine sand, cement, water, admixtures (if required) and alkali-resistant (AR) glass fibers in different ratios. In this paper, effect of using glass fibers on strength properties of concrete has been discussed. 8 different GFRC mixes were cast using different percentages of glass fibers by weight of cement at constant mix and water cement ratios. The properties of concrete like workability, compressive strength, tensile strength, flexure strength, and ultrasonic pulse velocity have been investigated by casting respective concrete samples of standard dimensions in the form of cubes, cylinders and beams. The results show that workability of GFRC decreases by increasing glass fiber content. it was also observed that long term compressive strength of GFRC was marginally improved. However significant improvement in tensile and flexural strength of GFRC at 1.5% glass fiber content was observed as compared to ordinary concrete.

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