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Compressive and Tensile Elastic Properties of Concrete: Empirical Factors in Span Reinforced Structures Design
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Compressive and Tensile Elastic Properties of Concrete: Empirical Factors in Span Reinforced Structures Design
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Journal Article
Compressive and Tensile Elastic Properties of Concrete: Empirical Factors in Span Reinforced Structures Design
2021
Overview
Concretes with the same strength can have various deformability that influences span structures deflection. In addition, a significant factor is the non-linear deformation of concrete dependence on the load. The main deformability parameter of concrete is the instantaneous modulus of elasticity. This research aims to evaluate the relation of concrete compressive and tensile elastic properties testing. The beam samples at 80 × 140 × 1400 cm with one rod Ø8 composite or Ø10 steel reinforcement were experimentally tested. It was shown that instantaneous elastic deformations under compression are much lower than tensile. Prolonged elastic deformations under compression are close to tensile. It results in compressive elasticity modulus exceeding the tensile. The relation between these moduli is proposed. The relation provides operative elasticity modulus testing by the bending tensile method. The elasticity modulus’s evaluation for the reinforced span structures could be based only on the bending testing results. A 10% elasticity modulus increase, which seems not significant, increases at 30–40% the stress of the reinforced span structures under load and 30% increases the cracking point stress.
Publisher
MDPI AG,MDPI
