Recycling of Concrete Demolition Waste: pathway to sustainable development

Abstract

Over the years, advancement in the construction industry and the need for \nchange and improvement towards new structures have led to increase in the use of \nconstruction materials and generation of construction and demolition wastes (CDW). \nThese construction wastes are aesthetically displeasing and not of good environmental \nimpact. Its presence in the environment also occupies space. This study reviewed \nresearches carried out independently by different researchers to establish the recycling \nof concrete waste for fresh construction purposes. This puts into consideration the \nintegrity of new structures built from using these concrete wastes; hence researching into \nits impact on certain properties such as workability, compressive strength, water \nabsorption and more. The line drawn from the distinct works established the possibility \nof recycling concrete wastes for further use in construction purposes with retention of \nstructural integrity. The results from two research works compared established 25% to \n30% optimum replacement level of recycled concrete with satisfactory structural \nproperties.