COMPARATIVE ANALYSIS OF METHODS TO OBTAIN THE ELASTICITY MODULUS FOR CONCRETE PREPARED WITH NATURAL AND ARTIFICIAL SANDS
DOI:
https://doi.org/10.14393/19834071.2015.28171Abstract
It was studied the mechanical properties and durability of concrete indicators, focusing on ways of obtaining elasticity modulus. Using two fine aggregate, an artificial crushing and other natural. In the experimental program examined the absorption of water by immersion and capillarity, porosity, resistance to axial compression and tensile strength by diametrical compression, correlating them with the elasticity modulus. The elasticity modulus was evaluated under the bias of three methods: ultrasound, forced resonance and the stress-strain curve. The results allowed characterizing the materials and the composites and to identify the similarities and differences between the properties and methods presented and to generate good correlations. It was observed that the ABNT NBR6118:2014 provided values of the elasticity modulus closer to reality due to the type of aggregate. It is concluded that the aggregate to be used is an important factor and the determination of its properties become essential in getting a good approximation between the theoretical and the real cases. It was proved that the artificial sand increases the mechanical strength; improve the durability and increases the static and dynamic elasticity modules of the concrete. Keywords: mechanical properties of concret, durability, concrete, elasticity modulus, aggregates.Downloads
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Published
2016-02-12
Issue
Section
Civil Engineering