Effects of the Addition of Sawdust Ash and Iron Ore Tailings on the Characteristics of Clay Soil

Elinwa, Augustine Uchechukwu (Civil Engineering Department, Abubakar Tafawa Balewa University, Bauchi, Bauchi State, Nigeria)
Mohammed, Abdulrahaman Shehu (C/O Engineering and Construction Ltd, AY1 Faskari Road, sabo Gari, Tudun Wada, Kaduna, Kaduna State, Nigeria)
Mohammed, Ahmed Bafeto (Department of Civil Engineering, Federal Polytechnic Damaturu, Yobe State, Nigeria)


An evaluation of the effects of additives and firing temperatures on claybricks characteristics was studied. The two (2) additives used were sawdustash (SDA) and iron ore tailing wastes (IOTW), and the five (5) firingtemperatures of 400o C to 1200o C at intervals of 200o C were applied. Thefired bricks were tested for linear shrinkage, water absorption, density, andcompressive strength. The results of the investigations showed that firingtemperature improved the clay brick characteristics across all replacementlevels. However, the SDA additions increased the linear shrinkage and thewater absorption but decreased the density and compressive strength. Onthe other hand, the addition of IOTW to the clay-SDA mixture, reducedboth the linear shrinkage and water absorption of the clay bricks, andincreased the density and compressive strength. The statistical values andthe regression models derived on the experimental data using Minitab 18Software were significant.


Additives; Firing temperature; Clay bricks; Bricks characteristics; Statistics and regression models

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DOI: https://doi.org/10.30564/jbms.v3i2.3732


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