Research Article
Effects of Sand Powder on Sulfuric Acid Resistance, Compressive Strength, Cost Benefits, and CO2 Reduction of High CaO Fly Ash Concrete
Table 1
Chemical compositions of Portland cement type I, sand powder, and fly ashes.
| Chemical compositions (% by weight) | Portland cement type I (OPC) | Sand powder (GS) | Fly ash | Mae Moh (FAM) | BLCP (FAR) |
| SiO2 | 19.70 | 98.51 | 40.93 | 61.91 | Al2O3 | 5.19 | — | 22.42 | 20.35 | Fe2O3 | 3.34 | — | 13.64 | 5.20 | CaO | 64.80 | — | 13.63 | 2.32 | MgO | 1.20 | — | 2.93 | 1.35 | Na2O | 0.16 | — | 0.89 | 0.79 | K2O | 0.44 | — | 2.39 | 1.36 | SO3 | 2.54 | — | 1.93 | 0.28 | Free lime | 0.87 | — | 0.22 | 0.19 | LOI | 2.10 | — | 0.46 | 5.68 |
|
|