EXPERIMENTAL STUDY ON STRENGTH PARAMETERS OF RECYCLED AGGREGATE CONCRETE USING GGBS AND FLYASH
Keywords:
Recycled Coarse Aggregates (RCA), Ground Granulated Blast Furnace Slag (GGBS), Flyash, Ordinary Portland cement (OPC).Abstract
The rapid growth in the construction and depletion of natural resources requires the technology of recycling and reuse that will be adopted in the field of construction. The use of recycled coarse aggregate (RCA) is one of the approaches to this need and also cement is one of the most energy-intensive construction materials and its production involves very high-temperature processing (1400 ° C to 1500 ° C ) and leads to the uncontrolled extraction of natural resources and the emission of CO2 (greenhouse gas). There are many efforts to reduce Portland cement in construction. These efforts include the use of supplementary cementitious materials, as well as the use of alternative materials instead of Portland cement. In the present work, the cement is replaced with GGBS and Flyash at a constant of 40% and 25% and the coarse aggregate is replaced with the recycled coarse aggregate in proportions of 0%, 20%, 40%, 60%, 80% and 100% hardened properties such as compressive strength, split tensile strength and flexural strength are studied for the M30 grade of concrete. It has been observed that as the percentage of coarse aggregate increases the strength decreases.
