The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. In recent years building specifications have even required a specific elastic modulus of concrete … shown. Seismology and the ... Could anisotropy help in understanding mantle flow processes? 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. And so some key takeaways from the lecture, the modulus of elasticity and this class will be the notation for it will be a capital E. The slope of the linear elastic region of the stress-strain curve is the modulus of elasticity. The ratios of PET fiber range from 0.5% - 1.5%. And they’re ready for you to use in your PowerPoint presentations the moment you need them. "•1° These cylinders were tested in a closed-loop testing machine under strain controlled condi-tions and had a compressive strength varying from 3000 to 11,000 psi (20 to 75 MPa). Standardardized test of concrete. The Region of Stress-Strain Curve. 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 … To view this presentation, you'll need to allow Flash. 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. In this study, focus is on the modulus of elasticity for concrete with superabsorbent polymers (SAP). 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 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. Modulus of Elasticity of Concrete of Different strengths 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. The test for determining the modulus of elasticity of the concrete is known as a compression test on the cylindrical concrete sample. CHAPTER 4. Ca = Seismic coefficient based on soil profiled and Aa ... - Mech422 - Stress and Strain Analysis - F2002. Elastic modulus is a fundamental parameter in designing concrete structures. Now customize the name of a clipboard to store your clips. Looks like you’ve clipped this slide to already. This deformation usually occurs in the direction the force is being applied. 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. A simple composite model is used for this purpose. – Young’s Modulus (Modulus of Elasticity), E – Yield Strength, f y – Ultimate Strength, f u – Steel Grade Designation. Do you have PowerPoint slides to share? Poisson’s Ratio of Concrete. - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. Many of them are also animated. Magnitude of creep strain is a function of all the above that affect shrinkage, plus ... - 1/18 Mechanical Testing. Factors affecting modulus of elasticity of concrete. 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. Select six cylindrical concrete specimens. f’c = Compressive strength of concrete. Undergraduate Civil Engineering. Lecture 01 stress, strain and elasticity, Elastic behaviour of Springs and Mass on a spring, No public clipboards found for this slide. - Modulus of Elasticity and Poisson Ratio of Concrete. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. 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. Deformations (strains) under sustained loads. As we every one is familiar with modulus of elasticity of steel that is 29000ksi. 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. - 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. ... 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). REINFORCED CONCRETE Slide No. Nonlinear elasticity. 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. 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 … The strength of concrete is dependent on the relative proportion and modulus of elasticity of the aggregate. Grasley, D.A. 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. - Specially designed for mechanical engineers. 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. 1/19 Tensile test for mild steel ... Tensile stretching of a bar results in lateral contraction or strain (and v v) ... - Earthquake Loads. 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 … Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Cv = Seismic coefficient based on soil profile and Av. And, best of all, most of its cool features are free and easy to use. If you continue browsing the site, you agree to the use of cookies on this website. It's FREE! Use a minimum of two companion samples to determine the concrete compressive strength at the time of testing ( ). The concrete … Shoiab Ikhlaq Introduction While the American Society for Testing and Materials (ASTM) continues to provide working standards for the concrete industry, definitive values for the material’s elastic behavior are not able to be reported due to the heterogeneous nature of concrete CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. a) Young’s Modulus(Y) or modulus corresponding to longitudinal strain b) Bulk modulus(K) or modulus corresponding to the volume strain c) Rigidity modulus(N) or modulus corresponding to the shearing strain. Calculate the theoretical values the Young’s Modulus and Poisson’s ratio. Knowing that the beam is bent about a horizontal axis by a moment M = 1500 N-m, determine the maximum stress in (a) the aluminum and (b) the steel. Elasticity, Creep and Shrinkage ! Quick Tip! REINFORCED CONCRETE Slide No. 3d elasticity. 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. If so, share your PPT presentation slides online with PowerShow.com. 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. Poisson's ration = 0.15. MODULUS OF ELASTICITY CONCRETE TEST. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. Modulus of elasticity of concrete(Ec) is defined as the ratio of the applied stress to the corresponding strain. And the behavior of the one-dimensional model for concrete shown in Fig.2 is V K H H nn E (7 ) where E n and η n are the elastic modulus and the viscous constant for concrete, respectively. – Size or Diameter of the bar or wire. After you enable Flash, refresh this page and the presentation should play. 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. Measure load and the corresponding deformation as the load is increased. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. The American Concrete Institute. – Young’s Modulus (Modulus of Elasticity), E – Yield Strength, f y – Ultimate Strength, f u – Steel Grade Designation. 5.1. CHAPTER 4. The modulus of elasticity of concrete, in general, refers to the ratio of the applied stress on the concrete to the strain-induced. Because concrete shows the characteristic of rate dependent, it can be represented as Kelvin viscoelastic model. As concrete is a heterogeneous material. The Young’s modulus of concrete formulas used in the spreadsheet are detailed below. ATTACHMENTS & ACCESSORIES FOR CONCRETE COMPRESSION MACHINES. 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. 1 lectures accompanying the book: solid state physics: an. 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 … Modulus of Elasticity of Concrete Concrete Elasticity Modulus - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Benjie Cho and Mulugojam Alemu. Modulus of elasticity of concrete increases approximately with the square root of the strength. Cap all end bearing surfaces of specimens, Place an attached strain gauges and capped, From our data results, figure 7, the specimen 6, Neglect number 6 of our specimen and take an. Do you have PowerPoint slides to share? Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 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). ' They are all artistically enhanced with visually stunning color, shadow and lighting effects. Elastic analysis ... Constitutive Relations in Solids Elasticity. Spring thread. Correct mix. 3 ENCE 454 ©Assakkaf Steel is a high-cost material compared with concrete. 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. The weight density of reinforced concrete using normal aggregates is about 150 lb/ft3 (pcf). Brinks, M.D. 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 - Hooke's law is only valid for the portion of the curve ... area and gage length. Modulus of Elasticity and Poisson Ratio of Concrete - By: Tzu-Ting Yang. In FPS unit psi or ksi or psf or ksf. Concrete creep is defined as: deformation of structure under sustained load. Specially designed for mechanical engineers. Properly affixing strain gauges. 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 - Where there is isotropy in a single plane, then. Creep does not necessarily cause concrete to fail or break apart. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow.com is a great resource. ... 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. - Definition of normal stress (axial stress) Definition of normal strain Poisson s ratio Definition of shear stress Definition of shear strain Tensile Testing Stress ... - Transverse cracking (% of slabs cracked) is modelled as a function of cumulative ... Transverse joint spalling is the cracking or breaking of the edge of the slab up ... - ... 200-300 kPa (long term) Plastic ... excavation is ensured by anchors and reinforced shotcrete The definitive cavern is sustained by a concrete ... - Deformation experiments rocks and deformation Deformation experiments Experiments are carried out in steel pressure vessels. Presentation Summary : Find values for the Young’s Modulus and Poisson’s ratio from the data. a summary is given of compression tests conducted on approximately 3,500 6 x 12 inch cylinders. • For granites and limestone the modulus of elasticity in compression is in the range 2,000,000 – 7,000,000 psi. According to our textbook, the … Modulus of Elasticity and Poisson Ratio of Concrete - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Modulus of Elasticity and. In other words, it reflects the ability of concrete to deflect elastically. 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