Ash Substitution Effect in Brick Fabrication in Induration Time and Mechanical Resistance in Mortars Portland Cement Base

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In this research, we prepared cement-sand mortars and cement-water paste with partial substitutions associated to cement weight. We used ash coming from wood burnt to firing red brick. The objective is to determine the probable pozzolanic activity in cement matrix. We employed five different proportions of ash to make mortars. We studied the substitutions 5, 10, 15, 20, and 30%. We evaluated the cement-sand mixing workability, the normal consistency, and the indurating time in cement-water pastes. We researched simple compression, flexion, tension, adherence, electrical Resistivity, and Pulse Ultrasonic Velocity in the mortars in ages: 14, 28, 45, 90, 180, and 360 days. We also characterized the particle form of the cement and the ash. It only had the best results in the 15% substitution.

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83-87

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July 2017

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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