Abstract: This paper presents the results of a real-time work carried out to form light weight concrete made with plastic aggregates and Silica fume as mineral admixtures. Experimental investigation on concrete mix M40 is done by 10% replacement & addition of cement with Silica fume, and coarse aggregate with recycled plastic aggregates at the rates of 10%, 30 and 50% and their compressive strength and split tensile strength of concrete were discussed for 7 and 28 days and flexural strength has been discussed for 7, 28 days depending on the optimum dosage of replacement in compressive strength and split tensile strength of concrete. Finite element modeling of concrete beam is carried out in Abaqus/CAE 6.13 software and the results obtained are compared with the experimental results.