Bio-Mineralization process on concrete substituted with different types of waste materials

Abstract

Million tons of waste materials were produced in the world each year and most of it is not recyclable. To protect the environment from pollution and depletion, it is imperative to find explication for the safe disposal of waste materials. Using waste material in concrete production is a propitious method for eliminating the waste and reducing the cost of concrete. Also, the green concrete technology is expanding, it is necessary to utilize wastes in concrete that is generated from all the sectors. In construction large amounts of concrete from buildings was generated and demolitions made up 30-40 % of total wastes. Around 33 tons of Copper slag is produced across the world and 6 to 6.5 tons in India. Electronic waste is emerging as a serious public health and environmental issue in India and approximately 2 million tons of e-waste is generated annually. Concrete produced from wastes will have declination over the strength and it is necessary to improve the properties by some other technique. Self-healing concrete is a brand-new technology that ‘heals’ its own cracks and indicates a promising future in reducing the inevitable deterioration of concrete structures and the high maintenance costs involved. This research includes the inclusion of waste materials into the concrete and determination of compressive Strength of waste substituted concrete. Three major Wastes such as Demolition Wastes, Copper slag and E-Wastes were chosen to replace for aggregate and Bacteria subtilis a spore forming bacteria was used as an admixture to improve the properties of concrete. From the results obtained it has been observed that self-healing technology proves to be the fruitful and considerable increase in mechanical properties.