The Effects of Sweet Potato Peel Ash and Egg Shell Powder as Partial Replacement of Cement in Concrete Production
Akiniyi A.A., Gana A.J. and Oladunni Isaac Olasubomi
ABSTRACT
This study aimed at the possibility of using eggshell powder (ESP) and sweet potato peel ash (SPPA) in place of some of the conventional cement while making concrete. The search for substitutes for conventional cement that are more ecologically friendly is becoming more and more important as the market for sustainable building materials grows. The physical, mechanical, and durability characteristics of concrete mixtures including ESP and SPPA will be the main emphasis of this study. A comprehensive investigation was conducted to determine the present level of understanding on the utilization of agricultural waste products in concrete. The aim of this research was to compare the cost-effectiveness and availability of these wastes, as well as to examine the impact of these wastes on concrete and the characteristic strength of concrete that is made partially from egg shell powder and sweet potato peel ash instead of cement. The samples were then subjected to laboratory tests including the split tensile strength test, flexural strength test, compressive strength test, slump test, and X-ray fluorescence test. The influence of SPPA and ESP on the setting time and workability of the concrete mixtures was also examined. The SPPA and ESP were both divided into 1:1 ratio and evenly split into the concrete. They samples were all divided into different percentages of 0, 5, 10, 15 and 20%. Curing was also done for 7, 14, 28 and 56 days respectively for all the percentages of samples. According to the experiment, 20% replacement had the lowest compressive strength over the course of the entire curing age, while 5% replacement had the highest value at each curing age. In terms of cost, availability of these wastes, and mechanical strength, it would be profitable to use 5% of SPPA and ESP in lieu of cement. The results of this study may help develop sustainable building methods and provide a fresh approach to the advantageous application of agricultural byproducts in the building sector.
Keywords: Effect, Sweep Potato Peel Ash, Egg Shell Powder, Partial Replacement, Cement, Concrete Production
