Engr. An experimental investigation was carried out to determine the dynamic modulus of elasticity of pozzolana Portland cement concrete. MODULUS OF ELASTICITY CONCRETE TEST. 4. Modulus of elasticity is the measure of the stress–strain relationship on the object. The ratios of PET fiber range from 0.5% - 1.5%. – Size or Diameter of the bar or wire. shown. Confining pressure (s2 = s3) ... - Constitutive models Part 1 Background and terminology Elasticity An initial excuse One of the difficulties of the presentation of a difficult theory is that the ... - Elastic anisotropy - Data ... Elastic anisotropy tensor elements. Coefficient of thermal expansion, = 10 x 10 -6 per oC 53 Fatigue behaviour of Cement Concrete If you continue browsing the site, you agree to the use of cookies on this website. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete … Use a pi tape to measure the sample diameter () and subsequently calculate the length-to-diameter ratio (⁄) and cross-sectional area (). Find the Modulus of Elasticity of Concrete. The upper limit of each compressive stress cycle will be 40 percent of the concrete compressive strength (0.4 ) measured immediately in advance of the modulus of elasticity testing. Introduction Reinforced concrete is one of the most important building materials and is widely used in many types of engineering structures. Brinks, M.D. Strain =Dial gauge reading/gauge length = dl/L Stress = Load/Cross sectional area= P/A Use Compressometer and Extensometer to measure 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. The IS 456 of 2000 gives the Modulus of elasticity as E C = 5000 fck where E C is the short term static modulus of elasticity in N/mm2. 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 and Poisson Ratio of Concrete - By: Tzu-Ting Yang. Use a minimum of two companion samples to determine the concrete compressive strength at the time of testing ( ). In the experimental work the recycle aggregate is used in place of natural aggregate in the proportion of 0,25,50,75 and 100% with and without incorporation of steel fibers. Poisson’s Ratio of Concrete. The weight density of reinforced concrete using normal aggregates is about 150 lb/ft3 (pcf). Factors affecting modulus of elasticity of concrete. presentations for free. The modulus of elasticity of concrete, in general, refers to the ratio of the applied stress on the concrete to the strain-induced. The economy, the efficiency, the strength and the Tamer Eshtawi First Semester 2008 * * Lecture 2 Concrete Property Concrete Concrete is a mixture of cement, fine and coarse ... - STRUCTURAL DYNAMICS IN BULDING CODES Reinforced concrete lateral Force Resisting Structural System * Bearing Wall. Concrete in a bridge built in Great Britain in the 20 s has ... Stress-Strain Relationship the constant G is called the shear modulus and relates the shear stress and strain in the elastic region. 329 Table 8.1. Specially designed for mechanical engineers. It follows that the two materials are best A steel bar 100 mm long and having a square cross section 20 mm on an edge is pulled in tension with a load of 89,000 N, and experiences an elongation of 0.10 mm. The strength of concrete is dependent on the relative proportion and modulus of elasticity of the aggregate. Modulus of Elasticity of Concrete. Measure load and the corresponding deformation as the load is increased. Objective ... - Material Properties Material Types Unbound (soil) Natural (i.e., subgrade) Select (i.e., subbase, base) Asphalt concrete Portland cement concrete Stabilized materials ... - ... in particular at advanced age. Attachments are compatible with 500, 400, 300, and 250 concrete compression machine series models, and comply with test standards indicated. That's all free as well! 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). ' The value of modulus of elasticity of wet specimen is found higher from 3 to 4 GPa (3.2 to 4.3 x 10 4 kg/cm 2) than dry specimen i.e., the modulus of elasticity of wet concrete is higher by 16.3% to 7.5 according to its compressive strength. The concrete … Depending upon the three of strain, there are three types of elastic moduli, viz. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. • Sandstone has lower value modulus, which may range from 1,000,000 – 5,000,000 psi. Introduction Compressive Strength of Concrete. The test for determining the modulus of elasticity of the concrete is known as a compression test on the cylindrical concrete sample. – Size or Diameter of the bar or wire. Cv = Seismic coefficient based on soil profile and Av. Correct mix. Modulus of elasticity of concrete is defined as the ratio of stress applied on the concrete to the respective strain caused. Univ.. of Southern California. 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 … Do you have PowerPoint slides to share? Looks like you’ve clipped this slide to already. Concrete Elasticity Modulus - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. It is important that E of concrete be known because engineers … TYPES OF MODULI OF ELASTICITY. The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. fcr 0.7 X f ck Where, fcr = flexural strength (modulus of rupture),N/mm2 fck= characteristic compressive cube strength of concrete rupture), N/mm2 Modulus of elasticity of M40- concrete. The elastic modulus of normalweight concrete is higher than lightweight concrete because the moduli of the normalweight aggregate particles are greater than the moduli of lightweight aggregate particles. CHAPTER 4. View and Download PowerPoint Presentations on Bulk Modulus Of Elasticity And Compressibilty PPT. E=3.0 x 105 kg/ cm2. Nonlinear elasticity. Curling or cracking ... - Design of Concrete Structure I Eng. Find Poisson’s Ratio of Concrete. To view this presentation, you'll need to allow Flash. Modulus of elasticity of concrete […] Concrete creep is defined as: deformation of structure under sustained load. 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 … This is the elasticity we can feel. Background and significance of work to concrete industry The static Young’s modulus (E) is defined as the ratio of the axial stress to axial strain for a material subjected to uni-axial load [Neville 1997]. strength concrete (greater than 6.0 ks i), compute the modu lus of elasticity with the ACI 363 equation below: Ec = 1265 ∙ ¥f'c + 1000 (where f’c and Ec are in ksi) For all other pretensioned and post-tensioned elements, compute the modulus of elasticity using AASHTO LRFD … modulus of elasticity of concrete. The results show that based on composite theory it is possible to establish a model, which predicts overall concrete elasticity. Uni-axial Stress State. So the modulus of elasticity for steel is much higher than that of rubber. Clipping is a handy way to collect important slides you want to go back to later. - Where there is isotropy in a single plane, then. Determination of modulus of elasticity of Concrete Testing of cube or cylinder in uni-axial compression test. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The test procedure involves two stages. The modulus of elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 1/19 Tensile test for mild steel ... Tensile stretching of a bar results in lateral contraction or strain (and v v) ... - Earthquake Loads. The Young’s modulus of concrete formulas used in the spreadsheet are detailed below. Not only does it demonstrate the ability of concrete to withstand deformation due to applied stress but also its stiffness. The elastic modulus of the hardened paste may be in the order of 10-30 GPa and aggregates about 45 to 85 GPa. Units or 22. Poisson's ration = 0.15. - Hooke's law is only valid for the portion of the curve ... area and gage length. The modulus of elasticity of HVNP concrete made with a zeolitic natural pozzolan is somewhat lower than that of the control concrete made with the same w/cm ratio (Uzal, 2007).However, it is known that the modulus of elasticity of HVFA concrete is higher than that of Portland cement concrete with comparable … Benjie Cho and Mulugojam Alemu. Creep does not necessarily cause concrete to fail or break apart. Grasley, D.A. Because concrete shows the characteristic of rate dependent, it can be represented as Kelvin viscoelastic model. Keypoints: Reinforced Concrete Beam, Modulus of Elasticity, Finite Element Analysis, ANSYS 14.0. Like a concrete column getting more compressed, or a beam bending. PPT – Modulus of Elasticity and Poisson Ratio of Concrete PowerPoint presentation | free to view - id: 170344-ZDc1Z, The Adobe Flash plugin is needed to view this content. The objectives of this study are to investigate the relationship between static and dynamic elastic moduli determined using shear-wave velocity measurements and to demonstrate the practical potential of the shear-wave velocity method for in situ dynamic modulus evaluation. If 5 pcf of this is allowed for the steel and w is taken as 145 pcf then: Ef 57,000 'c Concrete Material Properties Effect of voids in concrete on modulus of elasticity, compressive strength, and flexural strength CIVL 1101 Introduction to Concrete 5/10 • The modulus of elasticity of concrete increases with increase in the modulus of aggregate used in its manufacture. 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 … Modulus of elasticity of concrete(Ec) is defined as the ratio of the applied stress to the corresponding strain. – Young’s Modulus (Modulus of Elasticity), E – Yield Strength, f y – Ultimate Strength, f u – Steel Grade Designation. 7.6.5 Modulus of elasticity. 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. 5.3.5. Calculation Procedures Young’s Modulus – E=(s 1-s 2)/(e 2-.000005) s 1 =the stress corresponding to the longitudinal strain of 50 micro strain. Modulus of Elasticity of Concrete of Different strengths Properly affixing strain gauges. Modulus of elasticity of concrete […] In other words, it reflects the ability of concrete to deflect elastically. This spreadsheet can be purchased below for only £5. They are all artistically enhanced with visually stunning color, shadow and lighting effects. REINFORCED CONCRETE Slide No. Units of elastic modulus are followings: In SI unit MPa or N/mm 2 or KN/m 2. The tensile strength as well as the modulus of elasticity of concrete are both proportional to the square-root of its ultimate strength, f c, and can be approximated by f t = 6 f c…………(1.1), E Assuming that the deformation is entirely elastic, calculate the elastic modulus of the steel EM204 Material Science 15 E 3 10 1 O L 2 6 / 10 223 m N A F O t GPa m N E 223 / 10 223 2 9 f’c = Compressive strength of concrete. The Calculate the theoretical values the Young’s Modulus and Poisson’s ratio. 0 3 5.3.4. Any concrete or masonry wall that supports more ... A REVIEW OF SHOTCRETE MATERIALS, MIX DESIGN AND APPLICATIONS, - University of Cape Town Concrete Materials and Structural Integrity Research Group A REVIEW OF SHOTCRETE MATERIALS, MIX DESIGN AND APPLICATIONS, StressStrain Relationship the constant G is called the shear modulus and relates the shear stress an. The elastic modulus of hardened cement paste is around 10 to 30 GPa and that of aggregate is between 45 to 85 GPa. Elasticity, Creep and Shrinkage ! According to. ... of Metals. - Specially designed for mechanical engineers. Modulus of elasticity of concrete increases approximately with the square root of the strength. Seismology and the ... Could anisotropy help in understanding mantle flow processes? It's FREE! Boasting an impressive range of designs, they will support your presentations with inspiring background photos or videos that support your themes, set the right mood, enhance your credibility and inspire your audiences. Steel is much stiffer than rubber. Units of Elastic Modulus. The paper presents the Modulus of Elasticity of recycle aggregate concrete reinforced with low strength steel fibers. elastic modulus obtained from conventional specimens (15×30 cm cylinders) of mortar and/or wet-screened concrete, along with the modulus of the gravel, be used to estimate the modulus of elasticity of the dam concrete. High modulus of elasticity for high rise structures | giatec scientific. Undergraduate Civil Engineering. where. Concrete generally have an elastic modulus varying between 30 to 50 GPa… After you enable Flash, refresh this page and the presentation should play. If so, share your PPT presentation slides online with PowerShow.com. Many of them are also animated. With the in- creased use of lightweight aggregates for structural con- crete a better understanding of the relationship between weight, strength, and the elastic modulus is needed. Chapter 16 composites. The weight density of reinforced concrete using normal aggregates is about 150 lb/ft3 (pcf). 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. The Region of Stress-Strain Curve. Three hundred 150 by 300 mm concrete cylinders were prepared from three different mixtures with target compressive strengths of 30, 35, and 40 MPa. • For granites and limestone the modulus of elasticity in compression is in the range 2,000,000 – 7,000,000 psi. Tensile test machine. According to our textbook, the … Lange, A.J. A simple composite model is used for this purpose. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. concrete cylinders. ... of Metals Mechanical Properties Stiffness - Elastic Modulus or Young s Modulus (MPa) Strength - Yield, Ultimate ... - ... tOFsOTsOOpOOSOOtOOFOd OdFOFdFtdOSdOsdd ddtdFdOdfFdeTOtdtFftfFfOfdtfFfTfftfe TfOf ... O fddf f ef d f e ffef n n n n n n nn n C ... Z.C. Modulus Of Elasticity And Poisson Ratio Of Concrete PPT. See our User Agreement and Privacy Policy. - We have 1/m =0.25 so E = 3K(1-0.5) or K=E/1.5 = 2/3(E) K=2/3 * 2.05* 10 5 =1.365 * 10 5 =N/mm2 now by definition of bulk modulus K= / v or v = /K but v ... | PowerPoint PPT presentation | free to view, Modulus of Elasticity and Poisson Ratio of Concrete. In recent years building specifications have even required a specific elastic modulus of concrete … - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. - Modulus of Elasticity and Poisson Ratio of Concrete. The modulus of elasticity of concrete calculations can estimate the dynamic, static and long term modulus of elasticity of concrete values. If you continue browsing the site, you agree to the use of cookies on this website. The construction industry has taken considerable, High Strength Concrete (HSC) and generally Higher, To gain additional knowledge on property of. The modulus of elasticity for aluminum is 70 GPa and for streel is 200 GPa. 1. And, best of all, most of its cool features are free and easy to use. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. About 45 to 85 GPa strength of concrete calculations can estimate the dynamic, static long... Materials ( ASTM ) Specifications include increases with increase in the range 2,000,000 – 7,000,000 psi our... And they ’ re ready for you to use in your PowerPoint Presentations the moment you need them values the... Find values for the Young ’ s modulus and Poisson ’ s modulus and Poisson ’ s modulus brass! 150 lb/ft3 ( pcf ) presentation: `` modulus of elasticity of concrete of on! Change shape building Materials and is widely used in its manufacture 10-30 GPa and that aggregate. To view this presentation, you 'll need to allow Flash offers more PowerPoint templates than else. Cracking develops the stress–strain relationship on the concrete … Because concrete shows the characteristic of rate,! This website like you ’ ve clipped this slide to already world, with over 4 to. Due to applied stress on the modulus of elasticity of concrete to withstand due... For PowerPoint, - CrystalGraphics offers more PowerPoint templates than anyone else in the 2,000,000! 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