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RESEARCH ARTICLE

Compressive Behavior of Recycled Mortar After Exposure to High Temperatures

The Open Civil Engineering Journal 30 Nov 2016 RESEARCH ARTICLE DOI: 10.2174/1874149501610010807

Abstract

The possibility of using fine recycled concrete aggregate as a substitute for natural sand are relatively limited. In order to promote it for engineering application, this paper reports the effect of elevated temperatures from room temperature to 600oC on the compressive behavior of mortars containing recycled fine concrete aggregate was investigated. It is found that no obvious relation between the color change and the recycled mortars replacement percentage.And the mass loss of recycled mortars is larger than that of normal mortars.The compressive strength of recycled mortars declines significantly as the temperature rises. The elastic modulus of recycled mortars decreased with the increase in temperature, and the decrease is much quicker than the decrease in compressive strength.

Keywords: Compressive behavior, Elastic modulus, Elevated temperature, Recycled fine concrete aggregate, Recycled mortars.
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