Effect of Bio-Medical Waste on Compressive Strength of Concrete Cylinders

Abstract

In this paper, we investigate the compressive strength of concrete made with partial replacement of cement with biomedical waste ash. Biomedical waste was collected from the medical facility centers of Nawabshah city. After incineration, it was grinded into fine powder. The cement was then replaced by using ash in the dosage of 1%, 3%, 5%, 7% and 9% by weight of the cement. Total 288 standard size cylinders were cast with 1:2:4 mix and 0.45 w/c ratio in six batches. In each batch, 48 cylinders were prepared. Equal number of cylinders was cured for 7, 14, 28 and 90 days. Out of six batches, one batch of the cylinders was cast with all-conventional aggregates to compare the results of the proposed specimens. The test results of weight, density and compressive strength show that the optimum dosage of the biomedical waste ash is 3%. The weight of the proposed concrete specimens was lower by 2% than that of the conventional concrete specimens. The density was observed in good agreement with the
standard values. The reduction in compressive strength with 3% biomedical waste ash was recorded to be 26.36%.