Review Article
Effect of Agricultural Crop Wastes as Partial Replacement of Cement in Concrete Production
Table 3
Chemical composition of corncob leaves’ ashes (CCA).
| Chemical compositions (oxides %) | Authors | Adesanya and Raheem [40, 41] | Owolabi et al. [42] | Singh et al. [43] | S.A. Memon et al. [44] | Desai [45] | Bheel and Adesina [46] |
| Country | Nigeria | Nigeria | India | Pakistan | Gujarat | Pakistan | SiO2 | 66.38 | 64.90 | 64.56 | 63.73 | 62.30 | 67.23 | Al2O3 | 7.48 | 10.79 | 9.42 | 15.08 | 6.25 | 6.34 | Fe2O3 | 4.44 | 4.75 | 5.12 | 5.32 | 4.40 | 5.33 | CaO | 11.57 | 10.24 | 12.00 | 6.56 | 10.57 | 10.75 | MgO | 2.06 | 2.08 | 3.01 | 4.56 | 1.86 | ND | SO3 | 1.07 | 2.53 | ND | ND | 1.02 | 1.04 | K2O | 4.92 | 4.30 | ND | 2.05 | 3.89 | 5.42 | Na2O | 0.41 | 0.43 | ND | 0.10 | 0.36 | 0.37 | Others | 1.67 | — | 5.89 | 2.60 | 9.35 | 3.52 | SiO2 + Al2O3 + Fe2O3 | 78.30 | 80.44 | 79.10 | 84.13 | 72.95 | 78.90 |
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