EVALUATION OF COMPRESSIVE STRENGTH AND ABRASIVE PROPERTIES OF RICE HUSK ASH – CEMENT COMPRESSED STABILIZED EARTH BRICKS

Authors

  • Adesola Oluwabunmi Olumodeji
  • Folahan Ayodele The Federal Polytechnic Ado-Ekiti
  • Kayode Dele Oluborode The Federal Polytechnic Ado-Ekiti, Nigeria

DOI:

https://doi.org/10.4314/njt.v42i2.5

Keywords:

Earth bricks, Stabilization, Compressive strength, Abrasion, Sustainability

Abstract

Cement, the most utilized building material in developing countries like Nigeria, is rising daily, making it hard for low-income people to acquire a home. This study aimed at producing compressed stabilized earth bricks (CSEBs) from Rice Husk Ash (RHA) and cement. After uncontrolled calcination of rice husk, the RHA oxide compositions were assessed by X-Ray Fluorescence. Design Expert (RSM) designed mix proportions for seventeen earth brick variables. Cement-RHA-Soil was blended with 0-5% cement and 20-25% water. Box Behnken Design (BDD) of Response Surface Methodology (RSM) in Design Expert Version 6 was used to generate seventeen (17) design mix proportions (variables) for the CSEBs. After damp curing for three days, compressed stabilized earth bricks (CSEBs) were evaluated for compressive strength and abrasion at 28, 56, and 108 days. RHA was pozzolanic because its major oxides (SiO2, Al2O3, and Fe2O3) yielded 75.27%. CSEB compressive strength improved with age. RCB16- CSEBs with 2.5% RHA+2.5% Cement+21.25% WC - exhibited the best compressive and abrasion strength. Thus, RHA is a good cement replacement in CSEB production  for cheaper and sustainable building.

Author Biographies

  • Folahan Ayodele, The Federal Polytechnic Ado-Ekiti

    Department of Civil Engineering/Lecturer II

  • Kayode Dele Oluborode, The Federal Polytechnic Ado-Ekiti, Nigeria

    Department of Civil Engineering/Senior Lecturer

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Published

2023-07-31

Issue

Section

Building, Civil & Geotechnical Engineering

How to Cite

EVALUATION OF COMPRESSIVE STRENGTH AND ABRASIVE PROPERTIES OF RICE HUSK ASH – CEMENT COMPRESSED STABILIZED EARTH BRICKS. (2023). Nigerian Journal of Technology, 42(2), 191-198. https://doi.org/10.4314/njt.v42i2.5