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Scirj, Volume VI [2018]
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Scirj Volume VI, Issue IV, April 2018 Edition
ISSN: 2201-2796

PERMEABILITY PROPERTIES OF CONCRETE PRODUCED WITH ORDINARY PORTLAND CEMENT (OPC) BLENDED WITH COW DUNG ASH (CDA)

Fredrick J. O., Dambring E. D., Molwus J. J., and Amos N. G

Abstract: This research is aimed at to study the permeability properties of CDA concrete with a view of producing durable blended concrete in terms of water permeability and sorptivity. Concrete cube samples with mix design strength of 25Nmm-2 and water to cement ratio of 0.6 were produced with OPC and partially replaced with CDA at 0, 10, 20 and 30% to OPC content. The research observed that the control samples had greater early strength as compared with that of the CDA samples. This low strength development is as a result of the presence of CDA as filler in the concrete, as pozzolanas are known to reduce the early strength of concrete due to its slow rate of hydration. In both cases, there was an increase in strength with the age of curing. The test results indicated that the flexural strength decrease as CDA percentage content was increased. CDA increases the sorptivity of concrete hence, increasing the ingress of water which could affect the durability of the concrete negatively. There was decrease in the permeability with increase in curing period but increases with increase in the quantity of CDA. The optimum replacement was 10% research for compressive strength, flexural strength sorptivity and water permeability. It can therefore be concluded that CDA is a very good pozzolana which can attain up to 93.64% design strength at 28 days curing period but increase the ingress of moisture into concrete when used but at 10% partial replacement the effect will not be of great concern.

Reference this Paper: PERMEABILITY PROPERTIES OF CONCRETE PRODUCED WITH ORDINARY PORTLAND CEMENT (OPC) BLENDED WITH COW DUNG ASH (CDA) by Fredrick J. O., Dambring E. D., Molwus J. J., and Amos N. G published at: "Scientific Research Journal (Scirj), Volume VI, Issue IV, April 2018 Edition, Page 27-34 ".

Search Terms: Permeability, Sorptivity, Cow dung Ash

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