Table 3 Physical and chemical specifications of the aggregates
Component | Standard sand (ASTM C146, 2004) | Used silica sand | Used granite waste (GW) |
|---|---|---|---|
SiO2 | 96–98.1 | 97–99 | 91.18 |
Fe2O3 | 0.2–0.7 | 0.2–0.6 | 1.9 |
Al2O3 | 0.51–1.63 | 0.4–1.7 | 0.22 |
CaO | 0.4–0.7 | 0.07–0.2 | 0.53 |
Na2O | 0.03–0.8 | 0–0.1 | 0.08 |
K2O | 0.02–0.08 | 0.02–0.06 | 1.13 |
MgO | – | – | 1.82 |
TiO2 | – | – | 0.05 |
P2O5 | – | – | 0.04 |
MnO | – | – | 0.11 |
SO3 | – | – | 0.37 |
Cl | – | – | 0.05 <  |
LOI | – | 0.01–0.35 | 2.72 |