Modulus Of Elasticity Testing

Sep 10, 2021 | Structural services | 0 comments

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Modulus of elasticity of concrete is a measurement that tells how stiff the concrete is. Stiffness typically suggests strength. It’s meant to show the concretes ability to keep its form intact while withstanding different stress and strain. In other words, it’s the ability for the concrete to snap back into its form when presented with stressors that may stress and strain in. 

What is Elasticity?

Elasticity is the ability of a material to snap back into its original shape when there are forces acting on it that are causing it to shift. Concrete is an elastic material to a certain extent. Concrete is elastic enough to withstand low stress. Modulus of elasticity tests for the elastic limit of concrete. That is the amount of stress that can be applied to a material before the material cannot get back to its original shape. Once a material has lost its shape, it will break and rupture over time. 

What Do the Results of the Test Mean?

The higher the elastic modulus means the concrete can endure higher stress, but the concrete will become weak and crack faster. Low elastic modulus suggests that the concrete will bend and deform easily. 

What Factors Affect Elastic Modulus of Concrete?

Factors that affect the elastic modulus of concrete are the types of aggregate used, the mix-design used, the curing conditions in which the concrete was under, concrete age, among others. However, the most important factors influencing the elastic modulus of concrete is aggregate used. The higher the volume of aggregate in the concrete mix, the higher the elastic modulus of concrete. 

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