Euphorbia Fibre Reinforced Concrete

In: Science

Submitted By muriets
Words 3378
Pages 14
EUPHORBIA FIBER REINFORCED CONCRETE
Murimi, S.M.

ABSTRACT
This paper presents an experimental investigation on Euphorbia fibres as concrete reinforcement. The possibility of improving the mechanical characteristics of concrete through the use of reinforcement plant fibres has provoked in recent years a special interest for this new construction material, especially in those areas where plant fibres can easily be found and consequently have a low price like Kenya. In this study, the influences of addition of euphorbia fibres on properties of fresh and hardened concrete were carefully investigated. It was found out addition of these fibres in concrete significantly improved the tensile strength and the flexural strength of the composite. The test results also revealed that the compressive strength of the concrete was slightly improved. It was illustrated that plain concrete possesses a very low tensile strength, limited ductility and little resistance to cracking. Conversely, the concrete with short randomly spread euphorbia fibres in it was found to have relatively high tensile strength, high ductility and more resistant to cracking. Finally, the results presented suggest that Euphorbia fibres can be used in concrete reinforcement

Keyword: Euphorbia fibres, reinforcements, concrete, cracking, compressive strength, tensile strength

1.0 INTRODUCTION
Concrete has been proved to be an important construction material for more than a century all over the world. However, concrete is relatively brittle, and its tensile strength is typically only about one tenth of its compressive strength (Brown et al, 2002). Regular concrete is therefore normally reinforced with steel reinforcing bars. For many applications, it is becoming increasingly popular to reinforce the concrete with small, randomly distributed fibres. Their main purpose is to increase the energy…...

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