Strength and Durability Properties of Cow Dung Stabilised Earth Brick
Strength and Durability Properties of Cow Dung Stabilised Earth Brick
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Date
2013
Authors
Yalley, Paa Kofi Peter
Manu, Dorothy
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Publisher
Civil and Environmental Research
Abstract
This research, reports on the investigation into the strength and the durability properties of earth brick stabilised
with Cow dung. A local earth was stabilised chemically by Cow dung. A better compressive strength at the dry
state and after 10 minutes of immersion in water was obtained with cow dung stabilisation at content of 20% by
weight of earth. Bricks stabilised with 20% Cow dung contents by weight of earth has a dry and wet compressive
strength of 6.64 and 2.27MPa respectively. There is an increased of about 25% in the dry compressive strength
of bricks stabilised with 20% cow dung content over that of the plain earth brick without stabiliser The 20%
cow dung content resulted in lower migration of water into the brick (i e. lower permeability). Also the abrasive
resistance increased with increase in the cow dung content up to 20%. The highly decreased in compressive
strength after 10 minutes of immersion in water, even with optimum Cow dung content, indicated that
appropriate building design that would prevent stabilised earth bricks from coming into direct contact with
rainwater is important. The study recommends that appropriate construction specification is necessary to prevent
cow dung stabilised earth bricks from coming into any prolonged direct contact with rainwater.
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Citation
Yalley, P. P. K., & Manu, D. (2013). Strength and durability properties of cow dung stabilised earth brick. Civil and Environmental Research, 3(13), 117-125.