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Evaluation of the Physico-Mechanical Properties of Concretes Containing Pet and Crushed Sand
Abstract:
The practice of sustainability in construction occupies an increasing prominent position in order to preserve the environment. Considering the environmental impacts caused by waste generation, the use of PET bottle flaks and crushed sand in partial substitution of conventional sand used in concretes is proposed. The aim of this work was to formulate concrete compositions with 1:3 and 1:4 mixtures containing varied water/cement factors and 5, 10, 15 and 20% content of PET wastes and gravel powder. The raw materials were characterized by physico-chemical tests. The formulations were subjected to slump tests and the hardened concrete to absorption, void index and simple compressive strength, with curing of 7 and 28 days, tests. The granulometric analysis allowed the calculation of the fineness modulus, which was 1.50, 3.25 and 0.64 for the crushed sand, gravel and PET respectively. The decrease in the strength with the increase in the PET content in the composite was observed, though, in some mixtures the values indicate the possibility of using this concrete in structural elements.
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577-581
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January 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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