Like a concrete column getting more compressed, or a beam bending. f’c = Compressive strength of concrete. The initial tangent modulus E c in N/mm 2 is estimated from k c c f E 5000 = (1.2) where f ck = characteristic compressive strength of concrete at 28 days The initial tangent modulus E c is also known as short term static modulus of elasticity of concrete in N/mm 2 and is used to calculate the elastic deflections. This is the elasticity we can feel. Modulus of Elasticity of Concrete. The Region of Stress-Strain Curve. Calculate the theoretical values the Young’s Modulus and Poisson’s ratio. In this article, let us learn about modulus of elasticity along with examples. 4. Byoungsok Shin. Modulus of Elasticity and Poisson Ratio of Concrete - By: Tzu-Ting Yang. E=3.0 x 105 kg/ cm2. Elastic analysis ... Constitutive Relations in Solids Elasticity. The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. So the modulus of elasticity for steel is much higher than that of rubber. In other words, it reflects the ability of concrete to deflect elastically. 1 lectures accompanying the book: solid state physics: an. The main factors which may affect the values determination of modulus of elasticity are, Depending upon the three of strain, there are three types of elastic moduli, viz. 1/19 Tensile test for mild steel ... Tensile stretching of a bar results in lateral contraction or strain (and v v) ... - Earthquake Loads. On the one hand, the decrease in the modulus of elasticity when rubber aggregates are used can be logically justified by the well established fact that the modulus of elasticity of a concrete depends on the modulus of elasticity of the aggregates and on their volumetric proportion in … Planar isotropy = 5 ... Isotropy means. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. ... shear strain, g = angle of deformation (radians) shear modulus, G = t /g (elastic region) ... - Title: Normal Stress (1.1-1.5) Author: heeter Last modified by: Yun Jing Created Date: 1/9/2007 12:05:30 AM Document presentation format: On-screen Show (4:3). But the BS110 has provided bases to satisfy new expressions for estimating the elastic modulus based on the work of Teychenne, to conform to the Stress-strain relationship of concrete such that: Ec28 = Ko + 0.2fcu28 BS8110, Ec28 = 5.5cu28 /áµ) and Et /Ec28 = 0.4 + 0.6ft /f28 where, Ec28 = concrete elastic modulus at 28 days. Modulus of elasticity of concrete(Ec) is defined as the ratio of the applied stress to the corresponding strain. MODULUS OF ELASTICITY CONCRETE TEST. The American Concrete Institute. Elastic modulus is a fundamental parameter in designing concrete structures. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. • Sandstone has lower value modulus, which may range from 1,000,000 – 5,000,000 psi. - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. This spreadsheet can be purchased below for only £5. presentations for free. Lange, A.J. The elastic modulus of hardened cement paste is around 10 to 30 GPa and that of aggregate is between 45 to 85 GPa. The concrete … 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. - Specially designed for mechanical engineers. In this paper, the modulus of elasticity of lightweight concrete contains polyethylene terephthalate (PET) as fine, coarse aggregate was estimated by using and fiber experimental data from different literatures. TYPES OF MODULI OF ELASTICITY. Higher value 16.3% is observed for lower strength i.e., 21 MPa and 7.5% increase for 70 MPa strength, while the strength of wet concrete is found less than dry concrete. Many of them are also animated. Upper components are attached to machines by a locking stem system. Units of elastic modulus are followings: In SI unit MPa or N/mm 2 or KN/m 2. Concrete is not linearly elastic as the other important material like reinforcing steel. You can change your ad preferences anytime. Young’s Modulus For materials whose length is much greater than the width or thickness, we are concerned with the longitudinal modulus of elasticity, or Young’s Modulus (Y). ' According to. Or use it to find and download high-quality how-to PowerPoint ppt presentations with illustrated or animated slides that will teach you how to do something new, also for free. Because concrete shows the characteristic of rate dependent, it can be represented as Kelvin viscoelastic model. 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