Effect of Variation in Temperature on Some Properties of Cement Stabilized Lateritic Interlocking Bricks

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Author(s) Amana Ocholi | Manasseh Joel
Pages 12-16
Volume 4
Issue 1
Date January, 2014
Keywords Temperature, Variation, Interlocking bricks, Compressive strength.

Abstract

The effect of variation in temperature on the compressive strength and water absorption of lateritic interlocking bricks stabilized with 6% and 8 % cement, subjected to temperatures of 100oC, 200oC, 300oC, 400oC and 500oC, over a period of one hour was investigated. 28 day compressive strength and water absorption test was performed on bricks before and after the bricks were subjected to temperature variation. Results of test showed that bricks stabilized with 6 % and 8 % cement content increased from 2.24N/mm2 and 2.72 N/mm2 at room temperature (35oC) to 4.03N/mm2 and 4.16 N/mm2, respectively when subjected to a temperature of 500 oC. However, when bricks were immersed in water for 24 hours, after heating, 28 day compressive strength of bricks stabilized with 6 % and 8 % cement decreased from 1.09 N/mm2 and 2.10 N/mm2 at room temperature (35 oC) to 0.76 N/mm2 and 1.36 N/mm2 respectively when subjected to a temperature of 500oC. Water absorption values of bricks stabilized with 6 % and 8 % cement increased from 1.91 % and 2.00 % at room temperature (35oC) to 21.72 % and 17.44 % respectively when bricks were subjected to a temperature of 500 oC. Based on results of test the use of water based fire extinguishers is not recommended for use in fire associated with walls made with lateritic interlocking bricks.

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