Compressive Strength of Sustainable Waste Rubber /Geopolymer /Concrete

Manufacturing of Portland cement is an energy intensive process which releases a large amount of greenhouse gas to the atmosphere. It accounts for about 7% of the greenhousegas produced annually. Therefore, it has been made to promote the use of inorganic polymers (geopolymers) in placeof Portland cement [1]. Inorganic polymers have emerged as novel engineering materials with the potential to form a substantial element of an environmentally sustainable construction and building products industry [2]. The industrial waste materials containing both silica and alumina can be usedas a binder to produce geopolymer. Various alkali activators also play a major role in producing geopolymers by dissolvingsilica and alumina from the raw material and forming aluminosilicate structures [3]. On the other hand, more than 300 million worn tires are currently stockpiled each year.These stockpiles are undesirable not only due to potential environmental threat, but also from the fire hazards point ofview [4]. In this work by using waste rubber and geopolymers in place of cement, a new concrete is designed in order to reduce carbon dioxide emissions during the construction and using waste rubber. The effect of rubber aggregate on the compressive strength of new concrete was investigated, and compared to that of conventional concrete