Investigating the effect of using chicken ESP and fired CBWP as partial replacement for cement in concrete.

Abstract

The report gives an overview of the practical application of a mixture of chicken ESP and fired CBWP as a good pozzolan. The study inspired by a study on its chemical composition and realize it was a good pozzolan. In this research study, the use of agricultural and construction solid wastes was evaluated for potential use as partial replacement for cement in concrete canal lining section. From the SEM/EDX analysis, Chicken ESP were mainly composed of Oxygen (48.1%), calcium (28.9%) and Carbon (23%) while fired CBWP mainly composed of Oxygen (52.6%), Silicon (24.3%) and Aluminium (12%). The materials fineness results were within the required percentage of 10% with a low moisture content. The mix combination was evaluated at nine (9) levels for potential use as partial replacement for cement in concrete canal lining with a slump of between 60– 180mm from which cubes were cast and tested for water absorption and compressive strength after 7 and 28 days curing. Water absorption after 28days of curing was ranging from 1.36% to 4.63% which was within required maximum percentage of 15%. Test 2 (2.5%ESP20%CBWP) and Test 5 (5%ESP20%CBWP) gave the lowest water absorption percentages of concrete cubes after 28 days of curing, that’s 1.36% and 1.38% respectively The Normal Concrete (NC) was designed for M25 grade of concrete and this was observed to yield 26.54N/mm2 at 28 days. The minimum compressive strength was obtained at 7.5%ESP30%CBWP with a yield of 21.63N/mm2 which is below the minimum required for M25 grade. Test 5 (5%ESP20%CBWP) had the highest compressive strength of 28.89N/mm2 after 28 days curing. Beyond this percentage, there was a decrease in compressive strength. Test 5 was used to obtain the optimum mix design important in the evaluation of cost effectiveness of the project. The analysis showed that the project was viable.