Optimal Polypropylene Fiber Content for Improved Compressive and Flexural Strength of Concrete

Ede, A. N. and Ige, AbimbolaOluwabambi (2014) Optimal Polypropylene Fiber Content for Improved Compressive and Flexural Strength of Concrete. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), 11 (3). pp. 129-135. ISSN 2278-1684, 1684,p-ISSN: 2320-334X,

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Abstract

Worldwide, concrete is a very important construction material, impacting heavily on Gross Domestic Products of many nations: a $30 billion business for ready- mix concrete production industry per year in the United States and a cement consumption rate of about 106kg per person in Nigeria. It is therefore imperative that this important material in the world construction industry must also be endued with the best possible properties. The principles on which reinforced concrete structural designs were based hangs on quality concrete material used in conjunction with quality steel or reinforcing material. However, in Nigeria, the reinforcement steel commonly used is of poor qualities as recent researches have shown that over 40% of 12 mm and 16 mm used within Lagos in 2010 failed the 460N/mm2 yield strength bench mark of BS8110 of 1997. The employment of micro fibers in the concrete will improve the strength and compensate for the apparently declining strength of Nigerian reinforced concrete building constructions and will also improve the strength of the non-reinforced concrete-sand crate block buildings. This research studies the effects of micro synthetic polypropylene fiber in improving concrete strength with the main focus of identifying the optimal quantity for improved compressive and flexural strengths of concrete. Destructive and non-destructive compressive strength tests and destructive flexural strength tests were carried out on the samples built with 0.25%, 0.5% 0.75% and 1% contents of polypropylene fibers alongside a control samples after 7, 14, 21 28 days of curing. The optimal percentage of polypropylene fiber that produced improved compressive and flexural strengths were found to lie within 0.25% and 0.5%.

Item Type:	Article
Uncontrolled Keywords:	Concrete, Polypropylene Fiber, Destructive Test, Non Destructive Tests, Compressive Strength, Flexural Strength
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	06 Sep 2016 15:51
Last Modified:	06 Sep 2016 15:51
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/7121

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