Table 1: Performance indexes of materials.

Cement Recycled coarse aggregate River sand Fly ash
Grand Density (g/cm3) fcc (MPa) Size (mm) dac
ω dac (g/cm3) dap
Fineness modulus dap (g/cm3) Fineness level
P.O 42.5 3 49.6 5-20 1.4 2.6 3.8% 1.6 2.7 2.46 2.2 Second

Note: fcc means compressive strength of cement at 28 days; dac refers to stacking density; dap refers to apparent density; ω refers to water absorption content.