Review Article
Pozzolanic Reaction in Clayey Soils for Stabilization Purposes: A Classical Overview of Sustainable Transport Geotechnics
Table 7
Chemical oxide composition of the additive materials [
15,
17,
27–
30].
| | Materials | Oxide composition (content by weight, %) | | SiO2 | Al2O3 | CaO | Fe2O3 | MgO | K2O | Na2O | TiO2 | LOI | P2O5 | SO3 | ZnO | Free CaO |
| | PBA | 60.96 | 15.49 | 14.59 | 0.45 | 0.89 | — | 0.81 | — | 5.8 | — | — | — | — | | RHA | 56.48 | 22.72 | 5.56 | 3.77 | 4.65 | 2.76 | 0.01 | 3.17 | 0.88 | — | — | — | — | | WTA | 14.1 | 2.7 | 47.0 | 1.1 | 0.7 | 0.01 | 0.01 | 0.01 | — | 0.01 | 1.2 | 33.1 | — | | WPA | 28.15 | 15.77 | 30.52 | 1.05 | 1.94 | 0.45 | 0.67 | — | 17.23 | — | 0.57 | — | — | | SBA | 57.95 | 8.23 | 4.52 | 3.96 | 4.47 | 2.41 | — | — | 5.0 | — | — | — | — |
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PBA: palm bunch ash; RHA: rice husk ash; WTA: waste tire ash; WPA: waste paper ash; SBA: sugarcane bagasse ash; LOI: loss on ignition.
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