Influence of Selected Pozzolanas on Basic Physical and Mechanical Properties of HSC

Abstract:

Crushed brick (CB) used in high strength concrete as partial replacement of cement is the subject of this paper. It is a waste material and so its exploitation is needed to be found. Concrete industry can be proper area as CB is a fine material and is pozzolanic active. Basic physical properties and mechanical properties were investigated. Open porosity and bulk density achieved the best values when 30% of cement was replaced by CB. Matrix density decreased with rising addition ratio. The values of compressive strength was the highest for 30% replacement level and with 60% addition ratio were not lower than for the reference mixture. The conclusion is, that according to studied parameters 30% of cement substituted by CB is the most profitable addition ratio.

• Periodical: Materials Science Forum (Volume 824)
• Pages: 39-42
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.824.39
• Online since: July 2015
• Authors: Eva Vejmelková*, Monika Čáchová, Jaroslava Koťátková
• Keywords: Basic Physical Properties, Basic Thermal Properties, Crushed Brick, High Strength Concrete, Waste Material

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