Management of Building Demolition Waste by Partial Replacement of Coarse Aggregate with Broken Bricks in Concrete and Construction of Road

Abstract

Issue related to the scarcity of good and quality of coarse aggregate has kept the construction industries into a crisis in findings an alternative to overcome this situation. The issue is worsening as the current aggregate used in the construction industries are non-renewable aggregates from the quarrying activities. Fast development in the recent years indeed has increased the need of coarse aggregate in the alarming rate. Besides that, the growth of the construction industry has also produced lots of product mainly the waste materials. The high amount of construction waste generated from the construction industries has caused a scarcity of the landfill area. The aim of this study is to determine the suitability of broken bricks as partial replacement of coarse aggregate in concrete production. Furthermore, to investigate the mechanical and physical properties of broken brick used concrete, and to compare the performance of broken brick as partial replacement of coarse aggregate in concrete with the conventional concrete.
In order to fulfil the objective, there are tests that were conducted to determine concrete performance, such as compressive strength test, slump test and impact test. With the different mix proportion in percentages of the broken bricks as coarse aggregate replacement of 10% and 20% in the equivalent strength of grades 25 was done and the results were analysed. From the results, we found that the optimum strength was achieved at 20% brick waste mix proportion and was higher compared with the conventional concrete of grade25.