Research Article
Effect of Elevated Temperatures on Mortar with Naturally Occurring Volcanic Ash and Its Blend with Electric Arc Furnace Slag
Table 2
Physical and chemical analysis of cement and SCMs.
| | | C | FA | VA | EAFS |
| | | Physical properties | | Specific gravity (g/cm3) | 3.15 | 2.83 | 2.64 | 3.69 | | Fineness (m2/kg) (blain) | 344 | — | — | — | | Fineness (m2/cc) (microtrac S3500) | 0.5670 | 1.027 | 1.194 (˂20µ) | 1.399 (˂45µ) | | | Chemical properties (oxides, % by weight) | | SiO2 | 20.9 | 51.5 | 46.4 | 16.1 | | Al2O3 | 5.18 | 24.3 | 14.4 | 3.80 | | Fe2O3 | 3.04 | 8.87 | 12.8 | 31.7 | | (SiO2 + Al2O3 + Fe2O3) | — | 84.7 | 73.6 | 51.6 | | CaO | 63.9 | 5.15 | 8.80 | 30.6 | | MgO | 1.65 | 3.50 | 8.30 | 9.84 | | Na2O | 0.10 | 2.38 | 3.80 | 0.56 | | K2O | 0.52 | 1.47 | 1.90 | 0.18 | | SO3 | 2.61 | 0.23 | 0.80 | Less than 0.1 | | LOI | 2.51 | 0.25 | 2.80 | No ignitable | | | Compounds (%) | | C2S | 52.1 | — | — | — | | C3S | 19.6 | — | — | — | | C3A | 8.17 | — | — | — | | C4AF | 8.81 | — | — | — |
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ASTM C618-15; LOI = loss on ignition. |
