Effect Of Corn Cob Ash And Locust Bean Pod Ash On The Mechanical Properties Of Concrete

Authors

  • Ali Ndahi Department of Building, Abubakar Tafawa Balewa University Bauchi, Bauchi, Nigeria
  • Shamsudeen Agboola University of Abuja
  • Adamu Sani Abubakar Department of Building, Abubakar Tafawa Balewa University Bauchi, Bauchi, Nigeria
  • Shabi Moshood Olawale Department of Building and Quantity Surveying, University of Abuja, FCT, Nigeria
  • Sanusi Abdulmutakabir Department of Building and Quantity Surveying, University of Abuja, FCT, Nigeria
  • Abbas Khadija Ibrahim Department of Building and Quantity Surveying, University of Abuja, FCT, Nigeria

Keywords:

Compressive Strength, Corn Cob Ash, Flexural Strength, Locust Bean Pod Ash, Mechanical Properties

Abstract

The Portland cement production is a highly energy-intensive process and the current trend in concrete research is towards finding alternative materials that can partially or fully replace cement. Supplementary cementitious materials (SCM) are important in producing high-strength and high-performance concrete. This study aims to investigate the effect of corn cob ash and locust bean pod ash on the mechanical properties of concrete. The concrete mix of 1:2:4 and a water cement ratio of 0.5 was blended with 5–30% pozzolanic materials individually and combined, and the concrete cured at 7, 14, 28 and 56 days. The specific gravity of Corn cob ash (CCA) and (Locust Bean Pod Ash) LBPA is 2.25 and 2.33 respectively. Corn cob ash and locust bean pod ash are pozzolanic material having satisfied the requirement of ASTM C618-05. It is observed that the workability of fresh concrete is reduced as the dosages of CCA and LBPA increase in the mixture. Moreover, the compressive and flexural strengths at 10% of CCA or CCA/LBPA gave similar strength with the control concrete, at 28 and 56 days respectively. Furthermore, the density and water absorption of concrete were reduced with increasing percentage of CCA and LBPA in concrete. It can be concluded that 10% CCA and LBPA as replacement of cement, results in improved performance of concrete. The research recommends that 10% CCA and LBPA as cement replacement individually or in the blend are the optimum percentages for structural applications which will lead to strong and quality concrete, and also help reduce the use of cement.

Downloads

Published

30-09-2024

How to Cite

Ndahi, A., Agboola, S., Abubakar, A. S., Olawale, S. M., Abdulmutakabir, S., & Ibrahim, A. K. (2024). Effect Of Corn Cob Ash And Locust Bean Pod Ash On The Mechanical Properties Of Concrete. Coou African Journal of Environmental Research, 5(2), 113–129. Retrieved from https://ajer.coou.edu.ng/index.php/journal/article/view/46

Issue

Section

Building

Similar Articles

1 2 > >> 

You may also start an advanced similarity search for this article.