Abstract

In this paper, the relationship between the static and dynamic elastic modulus of concrete and the relationship between the static elastic modulus and compressive strength of concrete have been formulated. These relationships are based on investigations of different types of concrete and take into account the type and amount of aggregate and binder used. The dynamic elastic modulus of concrete was tested using impulse excitation of vibration and the modal analysis method. This method could be used as a non-destructive way of estimating the compressive strength of concrete.

Highlights

  • The compressive strength and modulus of elasticity are the most important properties of concrete from the viewpoint of structural design

  • The proposed relationship between dynamic elastic modulus and compressive strength takes into account the type and amount of aggregate and binder type

  • It was demonstrated that consideration of these factors allows compressive strength to be calculated with better accuracy

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Summary

Introduction

The compressive strength and modulus of elasticity are the most important properties of concrete from the viewpoint of structural design. These parameters are determined by the uniaxial compression of cylindrical or cube-shaped specimens, according to standard procedures, and so values obtained that way are considered to be the reference values. It is not always possible to use these methods in practice because they are destructive and require the collection of numerous test samples during concreting operations. We seek non-destructive methods in order to estimate these parameters for hardened concrete, such as: the sclerometric method, the ultra-sound pulse velocity method, and the impulse excitation and modal analysis method.

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