From: Incorporation of untreated rice husk ash and water treatment sludge in masonry unit production
Elements | Mass % in OPC | Mass % in URHA | Mass % in WTS |
---|---|---|---|
SiO2 | 20.4 | 74.4 | 34.6 |
Al2O3 | 6.1 | – | 24.3 |
K2O | 0.5 | 5.1 | 3.0 |
CaO | 65.9 | 3.9 | 3.7 |
Fe2O3 | 3.9 | 3.9 | 22.5 |
SO3 | 1.3 | 0.7 | 2.8 |
TiO2 | – | 0.7 | 0.4 |
MgO | 0.6 | 0.8 | 1.9 |
LOIa | 1.3 | 10.5 | 6.8 |