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Journal of Applied Sciences
Year: 2008  |  Volume: 8  |  Issue: 23  |  Page No.: 4450 - 4454

Optimization of Physical and Mechanical Properties of Local Baked Clay Brick of Ain Nouissy Deposit (North-West of Algeria)

C. Benaouina, T. Kadri, H. Khelafi and M. Benkhelifa    

Abstract: In this research, we studied the properties of a brick locally manufactured to basis of kaolinite of Aïn Nouissy (Northwest of Algeria) in order to improve its qualitative properties in the physical and mechanical plans. Two actions on the natural material, the grinding and the ageing, us one permitted to improve strongly, the physical properties of the paste clayey and mechanical of the finished brick. Indeed, the grinding while acting on the granulometry of the natural material, increase the colloidal fraction while dispersing the present aggregations. It follows that the paste clayey becomes more disposed to undergo the effects of the ageing that improve strongly, the shrinkage of the material. The compactness of the material was improven and the resistance to traction and to the compression of the brick finished is doubled in relation to the witness who was not subject to the treatments of grinding and ageing. One of the important results of this survey is that it is practically sufficient to inject in the production line an ageing of 3 weeks of the paste of the kaolin accompanied by a preceding grinding of the material during 60 min to double the performances of the brick of Aïn Nouissy.

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