E-ISSN 2705-3954 | ISSN 0794-4756
 

Original Research 


FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT

Emmanuel Eberechukwu Ndububa; Peter I. Aburime.

Abstract
Guinea Corn Husk Ash (GCHA) was a converted product of Guinea Corn Husk (GCH) that was incinerated up to a temperature of 600OC. The husk is a common agro-waste in Northern Nigeria. The GCHA was used to partially replace Ordinary Portland Cement (OPC) in concrete. The use was expected to reduce environmental nuisance and cost on cement. The replacement levels of 0%, 5%, 10%, 20%, 30% and 40% ash were used. The chemical constituents of the GCHA as determined from an X-Ray diffraction analyzer included SiO2 (85.4%), K2O (4.01%), Fe2O3 (0.64%), CaO (2.04%) and NaO2 (0.98%). SO3 and AI2O3 were not detected. The combined percent of SiO2, Al2O3 and Fe2O3 of 86.04% is above the 70% benchmark for a pozzolana material. Also SO3 and NaO2 fall below the maximum allowable values of 4% and 1.5% respectively. The fresh concrete had slump values that ranged from 11mm for 0% cement replacement to 3.6% for 40% replacement. The hard concrete had flexural strength that was measured as Modulus of Rupture that ranged from the highest value of 4.61N/mm2 at 0% replacement to the least value of 3.19N/mm2 at 30% replacement after 56 days of curing. The density values equally decreased at an average of 3.3%. The trend showed that GCHA did not improve flexural strength nor increased the density of concrete produced with it. The concrete may however find use in mass concreting and in hot weather.

Key words: Guinea Corn, Husk Ash, Flexural Strength, Cement, Concrete, Pozzolana.


 
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Pubmed Style

Ndububa EE, Aburime PI. FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. NJE. 2021; 28(1): 25-31.


Web Style

Ndububa EE, Aburime PI. FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. http://www.njeabu.com.ng/?mno=86081 [Access: April 28, 2021].


AMA (American Medical Association) Style

Ndububa EE, Aburime PI. FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. NJE. 2021; 28(1): 25-31.



Vancouver/ICMJE Style

Ndububa EE, Aburime PI. FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. NJE. (2021), [cited April 28, 2021]; 28(1): 25-31.



Harvard Style

Ndububa, E. E. & Aburime, . P. I. (2021) FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. NJE, 28 (1), 25-31.



Turabian Style

Ndububa, Emmanuel Eberechukwu, and Peter I. Aburime. 2021. FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. Nigerian Journal of Engineering, 28 (1), 25-31.



Chicago Style

Ndububa, Emmanuel Eberechukwu, and Peter I. Aburime. "FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT." Nigerian Journal of Engineering 28 (2021), 25-31.



MLA (The Modern Language Association) Style

Ndububa, Emmanuel Eberechukwu, and Peter I. Aburime. "FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT." Nigerian Journal of Engineering 28.1 (2021), 25-31. Print.



APA (American Psychological Association) Style

Ndububa, E. E. & Aburime, . P. I. (2021) FLEXURAL STRENGTH OF CONCRETE MADE FROM GUINEA CORN HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT. Nigerian Journal of Engineering, 28 (1), 25-31.