Comparative Study of Direct Displacement Based and Forced Based Design Method

Abstract

Disposal of waste tyres is considered one of the major environmental challenges the whole country is facing as a result of waste rubber is not simply perishable even when treatment. One of the solutions suggested was the use of tyre waste dust as partial replacement of fine aggregate in cement-based materials. An experimental program was carried out to investigate the compressive strength of concrete with tyres waste dust as a fine aggregate in concrete. A number of cubes were casted of M20 grade for this study. The replacement of fine aggregates with tyre waste dust was partial in the concrete specimens according to the mix designs required in terms of weight and strength. The specimens were cured in water for required number of days before testing. Test results indicate clear substantial reduction in strength of the concrete when fine aggregate is replaced beyond 15% tyres waste dust compared with the compressive strength of concrete with no tyre waste dust.