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Utilization of crushed clay brick in cellular concrete productionUtilization of crushed clay brick in cellular concrete

Authors
Journal
Alexandria Engineering Journal
1110-0168
Publisher
Elsevier
Volume
53
Issue
1
Identifiers
DOI: 10.1016/j.aej.2013.11.005
Keywords
  • Masonry Wastes
  • Recycled Aggregates
  • Crushed Clay Bricks
  • Autoclave Aerated Concrete
  • Foamed Concrete
  • Micro-Structural Analysis
  • Tga
Disciplines
  • Design

Abstract

Abstract The main objective of this research program is to study the effect of using crushed clay brick as an alternative aggregate in aerated concrete. Two series of mixtures were designed to investigate the physico-mechanical properties and micro-structural analysis of autoclave aerated concrete and foamed concrete, respectively. In each series, natural sand was replaced with crushed clay brick aggregate. In both series results showed a significant reduction in unit weight, thermal conductivity and sound attenuation coefficient while porosity has increased. Improvement on compressive strength of autoclave aerated concrete was observed at a percentage of 25% and 50% replacement, while in foamed concrete compressive strength gradually decreased by increasing crushed clay brick aggregate content. A comparatively uniform distribution of pore in case of foamed concrete with natural sand was observed by scanning electron microscope, while the pores were connected mostly and irregularly for mixes containing a percentage higher than 25% clay brick aggregate.

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