Abstract
Ultrasonic pulse velocity and resonance frequency methods are non-destructive tests that allow the evaluation and control of building materials. They have been used to determine the dynamic properties of concrete, which are used in the design and control of structures and which are the key elements of the dynamics of materials. In this study, we chose a non-destructive approach to quantify -in laboratory- the influence of adding silica fume on ordinary concrete’s dynamic characteristics. However, several concrete mixtures have been prepared with limestone aggregates. The experimental plan used, allowed us to determine the dynamic elasticity modulus and the dynamic rigidity modulus of different formulated concretes.
Highlights
The non-destructive testing is a fundamental area of research, which allows obtaining the quality and the degradation state of building materials
We show that the greatest value of the dynamic modulus of elasticity is obtained from the concrete containing 5% of silica fume (SF) followed by the reference concrete (RC)
The dynamic elasticity modulus obtained for the 5% SF5 concrete mix is higher than that of the reference concrete, throughout the duration of the hardening, because she has a very high finesse
Summary
The non-destructive testing is a fundamental area of research, which allows obtaining the quality and the degradation state of building materials. Some characteristics of concrete, such the ultrasonic pulse velocity test, which is standardized by ASTM C597–09 (2003) allows the control of the quality of the materials and makes it possible to estimate the mechanical properties. It is a method based on the propagation speed of elastic waves in a material. The dynamic modulus of elasticity can be measured by estimating the static modulus, which must be known to design concrete structures. Struct. (2018) 5: 102-109 the existing standards indicate that appropriate arrangements on the potential influence of additions on the estimation of the elastic modulus are lacking
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