Apparatus for shearing and crushing reinforced concrete piles . Get details on patent AU2005220800 – Apparatus for shearing and crushing reinforced concrete piles by
Read More2020-7-1 The paper describes a part of studies under the research project “Polyurea coatings as a possible structural reinforcement system”.The main goal of the experimental investigation is to explore possible applications of polyurea coatings for reinforcing structures (including steel, concrete, wooden and other structures used in building industry).
Read More2015-12-23 Reinforcement areas (clause 3.12.5.3 and 3.12.6.1, BS 8110) •Minimum area of reinforcement is provided to control cracking of concrete. •Too large an area of reinforcement will hinder proper placing and compaction of concrete around reinforcement. •For rectangular beam with b (width) and h (depth), the area of tensile reinforcement, A s
Read More2017-8-5 understanding why reinforcement is placed in concrete. Most concrete used for construction is a combination of concrete and reinforcement that is called reinforced concrete. Steel is the most common material used as reinforcement, but other materials such as fiber-reinforced polymer (FRP) are also used.
Read More2011-8-13 steel reinforcement ratio and preloading on the behavior of the strengthened beams are discussed. It was ... the FRP or compression crushing of the concrete with yielding of the internal steel reinforcement. The interrelationships between strength, failure mode, and deflection capacity of beams with FRP flexural ...
Read More2016-3-15 The stroke of the testing machine was gradually increased until flexural failure was reached, manifested by concrete crushing. Fig. 2 shows load-mid-span deflection curves of the beam specimens. In beams with reinforcement ratios of 0.15% and 0.39%, concrete crushing was accompanied by rupture of the longitudinal steel.
Read MoreThe objective is to predict the force-deflection behavior and internal deformations in beams that were designed to break by reinforcement flow or crushing concrete and beams designed to break by ...
Read More2014-9-8 CIVL 4135 121 Compression Reinforcement 6.5. Example of analysis of a reinforced concrete section having compression reinforce-ment. f c′=5,000 psi Determine the nominal moment, Mn, and the ultimate moment capacity, Mu, of the reinforced concrete section shown below.
Read More2021-10-26 resulting concrete keyed between the ribs transfer the bearing forces into the surrounding concrete, but the wedging action of the ribs remains limited. In this stage the displacement of the bar with respect to the concrete (slip) consists of bending of the keys
Read More2013-3-6 The crushing strength of concrete is influenced by a number of factors in addition to the water/cement ratio and the degree of compaction. The more important factors are: (1) Type of cement and its quality. Both the rate of strength gain and the ultimate strength may be affected. (2) Type and surface texture of aggregate.
Read More2011-8-13 For concrete crushing, the Whitney rectangular stress block is used to approximate the concrete stress distribution at ultimate strength conditions. For FRP reinforcement, the linear-to-failure stress-strain relationship must be used. If the FRP reinforcement ruptures, sudden and catastrophic failure can occur. Therefore, concrete crushing has ...
Read More2021-11-18 The crusher incorporates a rebar cutter, always a welcome feature in concrete crushing and demolition work. The wide opening jaws designed with a high-powered hydraulic system is well-suited for the recycling of concrete slabs, walls, floor slabs, pre-cast structure, railings and the separation of concrete from rebar .
Read More2021-11-17 In both cases, the reinforcement is doubly symmetric with a concrete cover c of 1.64 mm. Regarding the transverse reinforcement, three layouts with different spacing were tested: 2.5 mm of spacing (ρ w = 0.76%, labeled H), 5 mm of spacing (ρ w = 0.38%, labeled L), and no transversal reinforcement (labeled with an N for no- reinforcement ...
Read More2012-6-24 2. Strain in the steel and the surrounding concrete is the same prior to crushing of the concrete or yielding of the steel. 3. Concrete in the tension zone of the section is neglected in the flexural analysis and design calculations, and the tension reinforcement is assumed to resist the total tensile force (Concrete tensile strength is
Read More2020-4-9 the behavior of FRP-reinforced concrete structures is a topic that attracted lot of interest in recent years. However, the application of FRP-reinforced concrete structures requires an extensive development of reliable design equations. This study focuses on the behavior of beams reinforced with different reinforcement ratios of glass
Read More2019-11-18 This paper investigates numerically and experimentally the performance of reinforced concrete (RC) beam with unequal depths subjected to combined bending and shear. Such beams can geometrically be considered for unleveled reinforced concrete (RC) floor slab-beam system. However, it may generate critical disturbances in stress flow at the re-entrant corner (i.e. location of drop in beam
Read More2019-11-11 This paper proposes a new kind of U-type reinforcement ferrule (URF) connection for the assembly of precast concrete (PC) components, which has a good fault-tolerance ability and low cost of construction with a simple post-grouting process. The modified connection features welded U ferrules, which can increase the bonding mechanism and internal stress transmission in the spliced region.
Read More2016-8-3 Formulating Constitutive Stress-Strain Relations for Flexural Design of Ultra-High-Performance Fiber-Reinforced Concrete Kaka et al. 3 this study had 3.0% micro straight steel fibers (length to dia. ratio (l/d = 71.4), l = 12.5 mm, d = 0.175 mm, and tensile strength = 2200 MPa).
Read More2021-10-26 resulting concrete keyed between the ribs transfer the bearing forces into the surrounding concrete, but the wedging action of the ribs remains limited. In this stage the displacement of the bar with respect to the concrete (slip) consists of bending of the keys
Read More2013-3-6 The crushing strength of concrete is influenced by a number of factors in addition to the water/cement ratio and the degree of compaction. The more important factors are: (1) Type of cement and its quality. Both the rate of strength gain and the ultimate strength may be affected. (2) Type and surface texture of aggregate.
Read More2011-8-13 For concrete crushing, the Whitney rectangular stress block is used to approximate the concrete stress distribution at ultimate strength conditions. For FRP reinforcement, the linear-to-failure stress-strain relationship must be used. If the FRP reinforcement ruptures, sudden and catastrophic failure can occur. Therefore, concrete crushing has ...
Read More2015-12-23 Reinforcement areas (clause 3.12.5.3 and 3.12.6.1, BS 8110) •Minimum area of reinforcement is provided to control cracking of concrete. •Too large an area of reinforcement will hinder proper placing and compaction of concrete around reinforcement. •For rectangular beam with b (width) and h (depth), the area of tensile reinforcement, A s
Read More2021-11-18 The crusher incorporates a rebar cutter, always a welcome feature in concrete crushing and demolition work. The wide opening jaws designed with a high-powered hydraulic system is well-suited for the recycling of concrete slabs, walls, floor slabs, pre-cast structure, railings and the separation of concrete from rebar .
Read More2012-6-24 2. Strain in the steel and the surrounding concrete is the same prior to crushing of the concrete or yielding of the steel. 3. Concrete in the tension zone of the section is neglected in the flexural analysis and design calculations, and the tension reinforcement is assumed to resist the total tensile force (Concrete tensile strength is
Read More2021-11-17 In both cases, the reinforcement is doubly symmetric with a concrete cover c of 1.64 mm. Regarding the transverse reinforcement, three layouts with different spacing were tested: 2.5 mm of spacing (ρ w = 0.76%, labeled H), 5 mm of spacing (ρ w = 0.38%, labeled L), and no transversal reinforcement (labeled with an N for no- reinforcement ...
Read More2020-4-9 the behavior of FRP-reinforced concrete structures is a topic that attracted lot of interest in recent years. However, the application of FRP-reinforced concrete structures requires an extensive development of reliable design equations. This study focuses on the behavior of beams reinforced with different reinforcement ratios of glass
Read More2014-7-7 Modeling of reinforced concrete in ANSYS starts by choosing one of three methods that can be used to model steel reinforcement in finite element models. These methods are (Figure 1): 1) discrete method; 2) embedded method; and 3) smeared method. In the discrete method, reinforcement is modeled using bar or beam elements
Read More2019-11-18 This paper investigates numerically and experimentally the performance of reinforced concrete (RC) beam with unequal depths subjected to combined bending and shear. Such beams can geometrically be considered for unleveled reinforced concrete (RC) floor slab-beam system. However, it may generate critical disturbances in stress flow at the re-entrant corner (i.e. location of drop in beam
Read More2016-8-3 Formulating Constitutive Stress-Strain Relations for Flexural Design of Ultra-High-Performance Fiber-Reinforced Concrete Kaka et al. 3 this study had 3.0% micro straight steel fibers (length to dia. ratio (l/d = 71.4), l = 12.5 mm, d = 0.175 mm, and tensile strength = 2200 MPa).
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