Replacement of fine aggregate and coarse aggregate with crushed concrete and expanded polystyrene in M25 Grade Concrete

Amitesh Singh
M.Tech. Student, Faculty of Civil Engineering, Shri Ramswaroop Memorial University, Lucknow-Deva Rd (U.P.), India , IN

Er. Mohd. Zain
M.Tech. Student, Faculty of Civil Engineering, Shri Ramswaroop Memorial University, Lucknow-Deva Rd (U.P.), India , IN

Er. Shubham Srivastava
M.Tech. Student, Faculty of Civil Engineering, Shri Ramswaroop Memorial University, Lucknow-Deva Rd (U.P.), India , IN

Keywords: flexural strength, compressive strength, aggregates

Abstract

This paper deals with the possibility of using fine aggregate and coarse aggregate as crushed concrete
and expanded polystyrene. An experimental program based on one variable (proportion of fine aggregates and
expanded polystyrene replacement) was implemented. The proportions of replacement were 5%, 10%, 15%, and 25%
by mass of aggregates. Several mechanical properties were tested as compressive and tensile strengths. The results
show a good correlation between aggregates replacement percentage and concrete properties. Concerning mechanical
properties, a gradual decrease in compressive, splitting, and flexural strength with the increase in recycled aggregate
percentage is shown.

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