The Standardardized test of concrete. A simple composite model is used for this purpose. And they’re ready for you to use in your PowerPoint presentations the moment you need them. TYPES OF MODULI OF ELASTICITY. • The modulus of elasticity of concrete increases with increase in the modulus of aggregate used in its manufacture. Upper components are attached to machines by a locking stem system. High modulus of elasticity for high rise structures | giatec scientific. 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. Chapter 16 composites. Ec = 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. 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. Not only does it demonstrate the ability of concrete to withstand deformation due to applied stress but also its stiffness. Seismology and the ... Could anisotropy help in understanding mantle flow processes? See our User Agreement and Privacy Policy. Select six cylindrical concrete specimens. Static and dynamic tests were performed at 4, 7, 14, and 28 days to evaluate the compr… The main factors which may affect the values determination of modulus of elasticity are, If you continue browsing the site, you agree to the use of cookies on this website. Modulus of Elasticity of Concrete The modulus of elasticity increased by 8% for 0.5% PET fiber, and decreased by 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. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Because concrete shows the characteristic of rate dependent, it can be represented as Kelvin viscoelastic model. See our Privacy Policy and User Agreement for details. In recent years building specifications have even required a specific elastic modulus of 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. Note that the isotropy of a tensor is equivalent to the isotropy of a ... - Creep. Curling or cracking ... - Design of Concrete Structure I Eng. 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. According to our textbook, the … Calculate the theoretical values the Young’s Modulus and Poisson’s ratio. Properly affixing strain gauges. Specially designed for mechanical engineers. 3d elasticity. 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. 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. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. 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. Calculate the theoretical values the Young’s Modulus and Poisson’s ratio. Units of Elastic Modulus. modulus of elasticity of concrete. The elastic modulus of the hardened paste may be in the order of 10-30 GPa and aggregates about 45 to 85 GPa. 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. So the modulus of elasticity for steel is much higher than that of rubber. "•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). Find the Modulus of Elasticity of Concrete. 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. The economy, the efficiency, the strength and the 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. Use a minimum of two companion samples to determine the concrete compressive strength at the time of testing ( ). 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. Concrete creep is defined as: deformation of structure under sustained load. PowerShow.com is a leading presentation/slideshow sharing website. Scribd is the world's largest social reading and publishing site. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. The construction industry has taken considerable, High Strength Concrete (HSC) and generally Higher, To gain additional knowledge on property of. - Hooke's law is only valid for the portion of the curve ... area and gage length. 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. Example 4: Young’s modulus for brass is 8.96 x 1011Pa. CHAPTER 4. shown. Tensile test machine. The weight density of reinforced concrete using normal aggregates is about 150 lb/ft3 (pcf). The paper presents the Modulus of Elasticity of recycle aggregate concrete reinforced with low strength steel fibers. Presentation Summary : Find values for the Young’s Modulus and Poisson’s ratio from the data. Do you have PowerPoint slides to share? CHAPTER 4. Modulus of elasticity of concrete is defined as the ratio of stress applied on the concrete to the respective strain caused. 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. Determination of modulus of elasticity of Concrete Testing of cube or cylinder in uni-axial compression test. If so, share your PPT presentation slides online with PowerShow.com. 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. The results show that based on composite theory it is possible to establish a model, which predicts overall concrete elasticity. The test for determining the modulus of elasticity of the concrete is known as a compression test on the cylindrical concrete sample. 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. The modulus of elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It's FREE! 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. This is the elasticity we can feel. REINFORCED CONCRETE Slide No. 5.3.5. Byoungsok Shin. 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 … And, best of all, most of its cool features are free and easy to use. Modulus of elasticity of concrete […] The properties of high density concrete made with sheared mild steel bars as coarse aggregate and sand as fine aggregate are studied through experimental investigations. The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. 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. Steel is much stiffer than rubber. - Where there is isotropy in a single plane, then. Hii Concrete is not linearly elastic as the other important material like reinforcing steel. In other words, it reflects the ability of concrete to deflect elastically. Looks like you’ve clipped this slide to already. Introduction Compressive Strength of Concrete. where. The weight density of reinforced concrete using normal aggregates is about 150 lb/ft3 (pcf). longitudinal stress Young s modulus longitudinal strain / / F A FL Y L L A L 2 lb : Pa in. 1/19 Tensile test for mild steel ... Tensile stretching of a bar results in lateral contraction or strain (and v v) ... - Earthquake Loads. Spring thread. Use a pi tape to measure the sample diameter () and subsequently calculate the length-to-diameter ratio (⁄) and cross-sectional area (). Brinks, M.D. concrete cylinders. Lecture 01 stress, strain and elasticity, Elastic behaviour of Springs and Mass on a spring, No public clipboards found for this slide. Uni-axial Stress State. Many of them are also animated. The modulus of elasticity of concrete calculations can estimate the dynamic, static and long term modulus of elasticity of concrete values. – Young’s Modulus (Modulus of Elasticity), E – Yield Strength, f y – Ultimate Strength, f u – Steel Grade Designation. 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 4. Modulus of elasticity of concrete(Ec) is defined as the ratio of the applied stress to the corresponding strain. The elastisitymodulus or E-modulus is a property of a material (like concrete or steel) whichs tells how much tension is needed to make it a little bit longer or shorter (when you pull at 2 ends of a steal beam it’ll be a bit longer then when you press it together). Planar isotropy = 5 ... Isotropy means. ATTACHMENTS & ACCESSORIES FOR CONCRETE COMPRESSION MACHINES. In this study, focus is on the modulus of elasticity for concrete with superabsorbent polymers (SAP). Univ.. of Southern California. Undergraduate Civil Engineering. Correct mix. The PowerPoint PPT presentation: "Modulus of Elasticity and Poisson Ratio of Concrete" is the property of its rightful owner. 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 … 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. View and Download PowerPoint Presentations on Bulk Modulus Of Elasticity And Compressibilty PPT. The concrete … Coefficient of thermal expansion, = 10 x 10 -6 per oC 53 Fatigue behaviour of Cement Concrete σ, ε … 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. After you enable Flash, refresh this page and the presentation should play. a summary is given of compression tests conducted on approximately 3,500 6 x 12 inch cylinders. The strength of concrete is dependent on the relative proportion and modulus of elasticity of the aggregate. ... 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. Largest social reading and publishing site way to collect important slides you want to go back to later modulus of elasticity of concrete ppt! 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