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Showing 1 to 20 of 65 for “"Reinforcing bars"”.
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ANCHORAGE OF HEADED REINFORCING BARS IN CONCRETE
Headed reinforcing bars serve as a viable alternative to hooked bars for anchorage in concrete because they provide a more efficient anchorage mechanism and limit congestion of the reinforcement. This study is part of a comprehensive study of the anchorage behavior of the headed bars. The work …
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Bond between reinforcing bars and concrete under impact loading
The bond between reinforcing bars and concrete under impact loading was studied for plain, polypropylene fibre reinforced, and steel fibre reinforced concretes. The experimental program included setting up an impact test system, in which an impact load with considerable energy could be generated, …
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An experimental study of hook anchorage for reinforcing bars
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1939
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Bond Behavior of High Performance Reinforcing Bars for Concrete Structures
Bond between the concrete and the reinforcing steel is a major factor affecting the performance of reinforced concrete structures. Advances in material science led to the production of High Performance Steel that has enhanced corrosion resistance and higher strength compared to conventional Grade …
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Structural Performance and Corrosion Resistance of Fiber Reinforced Polymer Wrapped Steel Reinforcing Bars
… polymer (FRP) wrapped steel reinforcement bars for use in reinforced concrete structures. The investigation is comprised of a bar analytical model using laminate theory, an in-depth analytical model for reinforced concrete sections, and a series of experimental tests to assess the …
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Evaluation of surface roughness and bond-slip behavior of new textured epoxy-coated reinforcing bars
Epoxy-coated reinforcing bars are widely used in bridge decks to mitigate the corrosion of reinforcing steel. Research and practical experience both showed that the smooth epoxy coating significantly reduces the bond between concrete and reinforcing steel, which often results in the early …
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Probabilistic impact-echo method for nondestructive detection of defects around steel reinforcing bars in reinforced concrete
… adverse changes in the bond between concrete and reinforcing steel have been reported as a result of at least three distinct damaging mechanisms: alkali-silica reaction, corrosion, and early-age vibration. However, the extent to which bond problems occur in deteriorated field structures is largely …
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Residual Engineering Properties of Corroded Conventional Steel, High Chromium Steel and Stainless Steel Reinforcing bars in Concrete
… strengths and ductility of the corroded steel rebars subjected to accelerated corrosion, which could also be used to evaluate the residual responses of corroded reinforcement in reinforced concrete structures in practice.
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Service and Ultimate Limit State Flexural Behavior of One-Way Concrete Slabs Reinforced with Corrosion-Resistant Reinforcing Bars
… bridge deck reinforced with corrosion resistant reinforcing (CRR) bars, i.e., bars that exhibit improved corrosion resistance when embedded in concrete as compared to traditional black steel. Flexural tests of one-way slabs were conducted to simulate negative transverse flexure over a bridge …
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Corrosion resistance of concrete reinforcement
… steel reinforcement in concrete and epoxy coated reinforcing bars as corrosion resistant alternatives. Several case studies explore the durability and deterioration issues for epoxy-coated bars discovered through 30 years of implementation in reinforced concrete structures. The methods for …
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Flexural Resistance Factors for Partially Prestressed Members Using ASTM A 1035 Reinforcing Steel
<p>The current standard reinforcing steel used in reinforced concrete beams in the United States is ASTM A615, Grade 60. However, several high-strength reinforcing bars are now available. These bars are believed to offer better performance in reinforced and prestressed concrete beams. The current …
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A study of anchorage capacities of confined bent-bar reinforcement
… the anchorage capacities of bent deformed reinforcing bars in joints of reinforced concrete structures were examined. Ten full scale specimens simulating an exterior beam-column joint in a structure were tested in order to evaluate the anchorage capacity of the beam bars subjected to …
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Alvenaria armada de tijolo vazado de barro - pilares curtos
… rupture point. The quantity and the category of reinforcing bars were used as parameters for variation. The analysis of the results were done using comparative diagrams and tables of these structures at service, at the first limit state and near the rupture point. The masonry and reinforcing bars …
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Bond Behavior of Fiber Reinforced Polymer Bars Under Hinged Beam Conditions
… the behavior of fiber reinforced polymer (FRP) reinforcing bars, embedded in normal weight concrete (NWC) hinged beam-end specimens, tested in accordance with two laboratory conditions. Reinforcing bars of different diameter, material configuration, and finished surface preparation were tested …
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Effects of Shear Reinforcement on the Large-Deflection Behavior of Reinforced Concrete Slabs
… slab design usually consists of either lacing bars or single-leg stirrups. Lacing bars are reinforcing bars that extend in the direction parallel to the principal reinforcement and are bent into a diagonal pattern between mats of principal reinforcement. The lacing bars enclose the transverse …
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Corrosion rates and the time to cracking of chloride contaminated reinforced concrete bridge components
… reaches a threshold level at the depth of the reinforcing steel which initiates corrosion. The corrosion continues until sufficient pressure is exerted on the surrounding concrete to cause cracking. This study is a continuation of a study implemented in the Materials Division at Va Tech. The …
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Superelastic shape memory alloy composite bars for reinforcing concrete structures
… adding ductility and energy dissipation to FRP reinforcing bars through the use of SMA-fiber reinforced polymer (SMA-FRP) composites, an innovative type of composite that consists of a polymer matrix reinforced with small diameter superelastic SMA wires with and without additional conventional …
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Application of SMA fiber composite as seismic reinforcement for concrete moment resisting frames
… many years, steel has been used as the primary reinforcing material for concrete structures. Despite requisite stiffness, strength, ductility and desired deflection properties, steel reinforcing bars have tendency to incur permanent plastic deformations under excessive loading. Recently, fiber …
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