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# how to monitor the modulus of elasticity of concrete ### How to monitor the modulus of elasticity of concrete ...

Apr 18, 2013  10%  Monitoring the evolution of an early age set of parameters on concrete is necessary to predict the early age behaviour of structures. The difficulty lies in the fact that this monitoring must be automatic because the concrete hardening process takes place over a long period after the casting. This paper presents a new methodology and an apparatus, specifically designed at IFSTTAR, to monitor ...

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Boulay et al.  have developed a methodology and an apparatus to monitor the modulus of elasticity, compressive and tensile strengths of concrete, automatically since the earliest age. Simeonov ...

get price ### Modulus of Elasticity of Concrete- Determination and ...

Apr 11, 2019  1. Modulus of Elasticity Based on ACI 318-14. According to ACI 318-14 section 19.2.2, the modulus of elasticity of concrete is evaluated as follows : For concrete, the unit weight (wc) ranges from 1440 to 2560 Kg per cubic meters. For normal weight concrete :

get price ### Modulus of Elasticity of Concrete - Civil Engineering

Units of Elastic Modulus. Units of elastic modulus are followings: In SI unit MPa or N/mm 2 or KN/m 2. In FPS unit psi or ksi or psf or ksf. Modulus of Elasticity of Concrete. Modulus of Elasticity of Concrete can be defined as the slope of the line drawn from stress of zero to a compressive stress of 0.45f’ c. As concrete is a heterogeneous ...

get price ### Computation of Modulus of Elasticity of Concrete

computation of mix proportions of concrete given its elastic modulus, E. The computer programs can also determine modulus of elasticity, E, from a given concrete mix proportion. The programs based on simplex theory and regression theory are as presented in

get price ### How can we find the modulus of elasticity of concrete from ...

Two methods commonly suggested are initial tangent modulus and secant modulus. can we join origin to proof stress-strain point or stress-ultimate strain point (0.0035) and find its slope.

get price ### How to Calculate the Modulus of elasticity of concrete?

But for concrete, it is somewhat difficult to calculate the exact value of the modulus of elasticity of concrete as compared to steel. Because concrete is a brittle material and steel is ductile in nature. Let’s go step by step:-I told you concrete is a brittle material. Let’s see in the diagram.

get price ### Modulus of Elasticity of Concrete Calculator

Apr 15, 2021  ACI 318-19 Code. ACI 318-19 specifies two equations that may be used to determine the elastic modulus of concrete. When using Equation 19.2.2.1.a, the density of concrete should be in the range of 1440 kg/cu.m to 2560 kg/cu.m ( 90 lb/cu.ft to 160 lb/cu.ft). Older versions of ACI 318 (e.g. from ACI 318-08) have used the same equations throughout ...

get price ### How do you calculate the modulus of elasticity of concrete ...

Apr 30, 2021  IS:456 the modulus of elasticity of concrete is 5000√f’c, MPa. What is the elasticity of concrete? The elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks.

get price ### Modulus of elasticity of concrete? [3 Different standards]

Mar 04, 2019  Ec = Modulus of elasticity of concrete. f’c = Compressive strength of concrete. According to. ACI 318–08, (Normal weight concrete) the modulus of elasticity of concrete is, Ec =4700 √f’c Mpa and. IS:456 the modulus of elasticity of concrete is 5000√f’c, MPa. The main factors which may affect the values determination of modulus of ...

get price ### METHOD OF TEST FOR CHORD MODULUS OF ELASTICITY

METHOD OF TEST FOR CHORD MODULUS OF ELASTICITY OF CONCRETE (Compressometer Method) SCOPE This test method describes the procedure used in determining the modulus of elasticity of concrete by means of a compressometer is described in this test method. Alternate methods using a dial gauge capable of reading to 0.0001 in. or an electronic recorder ...

get price ### How to monitor the modulus of elasticity of concrete ...

How to monitor the modulus of elasticity of concrete, automatically since the earliest age? By Claude Boulay, Stéphanie Staquet, Brice Delsaute, Jérôme Carette, Michela Crespini, Oumaya Yazoghli-Marzouk, Érick Merliot and Sandrine Ramanich

get price ### Computation of Modulus of Elasticity of Concrete

computation of mix proportions of concrete given its elastic modulus, E. The computer programs can also determine modulus of elasticity, E, from a given concrete mix proportion. The programs based on simplex theory and regression theory are as presented in

get price ### Test To Determine Modulus Of Elasticity Of Concrete ...

Modulus of elasticity of concrete is defined as the ratio of stress applied on the concrete to the respective strain caused. 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.

get price ### How to Calculate the Modulus of elasticity of concrete ...

But for concrete, it is somewhat difficult to calculate the exact value of the modulus of elasticity of concrete as compared to steel. Because concrete is a brittle material and steel is ductile in nature. Let’s go step by step:-I told you concrete is a brittle material. Let’s see in the diagram.

get price ### How to Calculate the Modulus of Elasticity of Concrete ...

May 13, 2021  The modulus of elasticity of concrete is highly dependent on the aggregate and mixture proportions. Stress-strain Curve of Concrete. The modulus of elasticity of normal-density concrete ranges from 14,000 to 41,000 MPa. Modulus of elasticity plays a significant role in the design of concrete structures and must be described.

get price ### High Strength Concrete and Modulus of Elasticity ...

high strength concrete must often meet many other requirements to satisfy stakeholders Design Modulus of Elasticity Durability Set Time Early Strength Consistency • High strength concrete differs from conventional concrete in that a high strength bonding system is weaker aggregate filler

get price ### Modulus of Elasticity for Normal Weight Concrete ...

Modulus of Elasticity for Normal Weight Concrete formula is defined as the stiffness or resistance to deformation of a material. It is constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops is calculated using modulus_of_elasticity_of_concrete = 57000*(Compressive strength ^(1/2)).To calculate Modulus of Elasticity for Normal Weight Concrete ...

get price ### ESTIMATION OF THE MODULUS OF ELASTICITY FOR DAM CONCRETE

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The modulus of elasticity of dam concrete is difficult to determine directly from tests due to the necessity for large specimens and testing machines. In order to study the applicability of simple elastic models for predicting the modulus from standard size specimens, tests were conducted on prisms of 45×45×90 cm ...

get price ### between the Dynamic Elastic Modulus and Compressive ...

the static and dynamic modulus of elasticity is presented in Figure2. The estimation of the elastic modulus of concrete using non-destructive methods requires the application of a relationship between the dynamic and static elastic modulus as well as a relationship between the static elastic modulus and compressive strength of concrete.

get price ### Evaluation of Static Modulus of Elasticity Depending on ...

Fig. 1 Dependence between elasticity modulus and compressive strength based on empirical relationship according to A. M. Neville for common concrete  The standard EuroCode 2 gives approximate values of guide module and following comment to the modulus of elasticity , : 1) Concrete elastic deformations depend to great extent

get price ### Modulus of elasticity - American Concrete - Northern ...

Dec 20, 2020  The measured modulus of elasticity is highly sensitive to the moisture content of the test specimen. It is believed that this is due to the effect of drying at the interfacial transition zone. For a given concrete, the modulus of elasticity of specimens tested in a wet condition is about 15 percent higher than specimens tested dry.

get price ### (PDF) Prediction of the modulus of elasticity of high ...

express the modulus of elasticity of concrete; for instance, the American Concrete Code (ACI 318) expresses Eqs. (1) and (2) [3, 4], and the Canadian Conc rete Code (CSA A23.3) expresses Eq.

get price ### Dynamic Poisson's Ratio and Modulus of Elasticity of ...

The dynamic modulus of elasticity of concrete can be calculated using the following equation, if the density and the Poisson's ratio of concrete are known ; dp 2 2 1 dd d EV PP U P (2) For a linear elastic and isotropic material, Poisson’s ratio is constant but in concrete

get price ### How to monitor the modulus of elasticity of concrete ...

Apr 18, 2013  Monitoring the evolution of an early age set of parameters on concrete is necessary to predict the early age behaviour of structures. The difficulty lies in the fact that this monitoring must be automatic because the concrete hardening process takes place over a long period after the casting. This paper presents a new methodology and an apparatus, specifically designed at IFSTTAR, to monitor ...

get price This paper presents a new methodology and an apparatus, specifically designed at IFSTTAR, to monitor the hardening process of a concrete. Mainly, the Young's modulus can be monitored in compression. Measurements start soon after having cast the concrete and the sample temperature is completely controlled so that the concrete maturity is well ...

get price ### How can we find the modulus of elasticity of concrete from ...

Two methods commonly suggested are initial tangent modulus and secant modulus. can we join origin to proof stress-strain point or stress-ultimate strain point (0.0035) and find its slope.

get price ### DI-fusion How to monitor the modulus of elasticity of ...

DI-fusion, le Dépôt institutionnel numérique de l'ULB, est l'outil de référencementde la production scientifique de l'ULB.L'interface de recherche DI-fusion permet de consulter les publications des chercheurs de l'ULB et les thèses qui y ont été défendues.

get price ### Evaluation of Static Modulus of Elasticity Depending on ...

Fig. 1 Dependence between elasticity modulus and compressive strength based on empirical relationship according to A. M. Neville for common concrete  The standard EuroCode 2 gives approximate values of guide module and following comment to the modulus of elasticity , : 1) Concrete elastic deformations depend to great extent

get price ### SHRINKAGE MODULUS OF ELASTICITY IN CONCRETE

of elasticity, and shrinkage in concrete when natural coarse aggregates were replaced with RCA. Concrete batches were made with water-cement (w/c) ratios of 0.30, 0.45, and 0.60, and substitution percentages ranged from 0% to 100% of natural aggregate with RCA. Test results clearly show that compressive strength, modulus of elasticity, and

get price ### Modulus of Elasticity of Concrete Concrete Technology

L = length of specimen. ρ = density of concrete. If length of specimen is measured in mm and density ρ in kg/m 3 then-. Ed = 4n 2 L 2 ρ x 10 –15 GPa. The value of dynamic modulus of elasticity can also be determined from the relation-. Ed = ρv 2 [ (1 + µ) (1 – 2µ)/ (1 – µ)] where, v = pulse velocity in mm/s.

get price ### Dynamic Poisson's Ratio and Modulus of Elasticity of ...

The dynamic modulus of elasticity of concrete can be calculated using the following equation, if the density and the Poisson's ratio of concrete are known ; dp 2 2 1 dd d EV PP U P (2) For a linear elastic and isotropic material, Poisson’s ratio is constant but in concrete

get price ### between the Dynamic Elastic Modulus and Compressive ...

the static and dynamic modulus of elasticity is presented in Figure2. The estimation of the elastic modulus of concrete using non-destructive methods requires the application of a relationship between the dynamic and static elastic modulus as well as a relationship between the static elastic modulus and compressive strength of concrete.

get price ### Why does modulus of elasticity of concrete reduce with ...

Jul 22, 2020  The modulus of elasticity of concrete can be improved. As the porosity decreases, the modulus of elasticity of cement paste increases and consequently, the elastic modulus of concrete increases. The porosity of cement paste is controlled by water to cement ratio (w/c), air content, admixture dosage and degree of cement hydration.

get price ### High Strength Concrete and Modulus of Elasticity ...

high strength concrete must often meet many other requirements to satisfy stakeholders Design Modulus of Elasticity Durability Set Time Early Strength Consistency • High strength concrete differs from conventional concrete in that a high strength bonding system is weaker aggregate filler

get price ### MODULUS OF ELASTICITY IN DEEP BORED PILES

Static Modulus of Concrete Concrete is not a linearly elastic material and thus its Young's modulus (stiffness) is not a constant. For the purpose of the following discussions, a distinction needs to be made between the static and dynamic moduli of concrete. The static modulus (Es) is commonly obtained from conventional static

get price ### Evaluation of Static Modulus of Elasticity Depending on ...

Authors: K. Krizova, R. Hela Abstract: The paper is focused on monitoring of dependencies of different composition concretes on elastic modulus values. To obtain a summary of elastic modulus development in dependence of concrete composition design variability was the

get price ### The Dynamic Modulus of Elasticity as an Important ...

Dec 08, 2016  The paper contains the results of measurements of the dynamic modulus of elasticity with ultrasound to test of the 20 cubes made from the concrete and 18 cubes made from the steel fiber reinforced concrete. The dynamic modules of elasticity were converted to the static in accordance with Czech technical standard ČSN 73 2011 . Non-destructive ...

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