The static elastic modulus of concrete is defined as
a chord modulus from the stress-strain curve
, with a first point at a strain level of 0.00005 ( ) and the second point at 40% of maximum stress ( ) as follows: It is of interest to compare dynamic elastic modulus and initial tangent modulus, which corresponds to a …
What is static modulus of elasticity?
A stress-strain curve is drawn with the help of values of stress and strain obtained. The modulus of elasticity
so obtained from actual loading
is called static modulus of elasticity. It has been observed that even under short term loading concrete does not behave as an elastic material.
What is static modulus of concrete?
Static modulus of elasticity of concrete is defined as
the slope of the stress-strain curve under uniaxial tension or compression loading
. When we test a concrete specimen in tension or compression, the following stress-strain relation is observed.
What is modulus of elasticity of concrete?
Modulus of elasticity of concrete(Ec) is defined as
the ratio of the applied stress to the corresponding strain
. Not only does it demonstrate the ability of concrete to withstand deformation due to applied stress but also its stiffness. In other words, it reflects the ability of concrete to deflect elastically.
How do you calculate the modulus of elasticity of concrete?
The accurate value of modulus of elasticity of concrete can be determined by conducting
a laboratory test called compression test on a cylindrical concrete specimen
. In the test, the deformation of the specimen with respect to different load variation is analyzed.
What is modulus of concrete How is it measured?
The static elastic modulus of concrete is defined as a
chord modulus from the stress-strain curve
, with a first point at a strain level of 0.00005 ( ) and the second point at 40% of maximum stress ( ) as follows: It is of interest to compare dynamic elastic modulus and initial tangent modulus, which corresponds to a …
What is maturity of concrete?
Concrete maturity is
an index value that represents the progression of concrete curing
. It is based on an equation that takes into account concrete temperature, time, and strength gain. Concrete maturity is an accurate way to determine real-time strength values of curing concrete.
How do you solve for modulus of elasticity?
Modulus =(σ2 – σ1) / (ε2 – ε1)
where stress (σ) is force divided by the specimen’s cross-sectional area and strain (ε) is the change in length of the material divided by the material’s original gauge length.
Is Young’s modulus The modulus of elasticity?
Young’s modulus is a measure of the ability of a material to withstand changes in length when under lengthwise tension or compression. Sometimes referred to as the modulus of elasticity, Young’s modulus is
equal to the longitudinal stress divided by the strain
.
What is short term modulus of elasticity?
The initial tangent modulus Ec is also known as short term static modulus of elasticity of concrete in
N/mm2
and is used to calculate the elastic deflections. (d) Shrinkage of concrete. Shrinkage is the time dependent deformation, generally compressive in nature.
Is concrete elastic or plastic?
Is Concrete Really Elastic? In a word,
yes
. But the elasticity is a way to characterize the mechanical response of the material body for applied stresses that stay within the linear regime.
What are the factors affecting modulus of elasticity of concrete?
- Strength of Concrete.
- Cement Paste.
- Aggregates.
- Concrete Wetness Condition.
- Transition Zone.
- Mix Proportion.
- Concrete Age.
- Curing Regime.
What is the modulus of elasticity of M20 concrete?
σ c b c for M20 is
7 MPa
and the modular ratio comes out to be 13.
What is FCK in RCC?
fck is characteristics of
compressive strength of
different grade of concrete, is measured in N/mm2 or mega pascal by CTM machine after casting of 28 days of curing, like fck value for m20 is 20N/mm2. Fck full form in civil engineering is characteristics of compressive strength.
What are the 4 main properties of concrete?
- Mechanical strength, in particular compressive strength. The strength of normal concrete varies between 25 and 40 MPa. …
- Durability. …
- Porosity and density. …
- Fire resistance.
- Thermal and acoustic insulation properties.
- Impact resistance.
What is Youngs modulus of concrete?
The tensile Young’s modulus obtained from the stress-strain response develops according to the water-cement ratio and the age of concrete. (2)The tensile modulus of concrete is
approximately 1.0–1.3-times larger than
its compressive modulus within the material’s first week of age.
