Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Bond Stress"”.
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A Quantifiable Model for Local Bond Stress-Slip Relationship under Generalized Excitations
An analytical model for local bond stress-slip relationship proposed in this paper was developed because of the need for a reliable bond stress-slip model to be used in predicting the bond behavior between steel bars and concrete in the well-confined zones of concrete structures under generalized …
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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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Investigation of punchout distress of continuously reinforced concrete pavement
… study of factors and causes of punchout distress is presented. The study is based on a review of CRC pavement behavior under contraction restraint that encompassed several structural response models including two numerical models developed for CRC pavement structural response analysis. Each …
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Response of reinforced concrete to reverse cyclic loading
… emphasize on the contribution from tensile stresses in cracked concrete. An iterative strain compatibility approach using a nonlinear bond stress-slip relationship was implemented into a computer program. The program indicated that monotonic tension stiffening does not decay with increasing …
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Glass Fiber Reinforced Polymer Bars as the Top Mat Reinforcement for Bridge Decks
… was to experimentally investigate material and bond properties of three different types of fiber reinforced polymer (FRP) bars, and determine their effect on the design of a bridge deck using FRP bars as the top mat of reinforcement. The properties evaluated include the tensile strength, modulus …
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Analysis of the structural behaviour of grouted pile/sleeve connections for offshore structures
… the strength of grouted connections. The current bond strength formula is evaluated and its limitations noted. Previous analytical work is examined and strengths and weaknesses investigated. A nonlinear finite element analysis is developed using a friction gap element to model the steel/grout …
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Bond of glass fibre reinforced polymer bars in high strength concrete
… research studies have been conducted to examine bond of glass fibre reinforced polymer (GFRP) bars with high concrete strength. The current research project aims to compare between bond measured from a pull-out test and a hinged beam test for GFRP bars embedded in high strength concrete. …
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Repair of damaged end regions of prestressed concrete girders using fiber reinforced polymer composite materials
… techniques, but primarily as either externally bonded laminates or near-surface mounted (NSM) bars or plates. These repair methods have been shown to be effective when used to provide supplemental flexural and shear reinforcement for reinforced concrete and prestressed concrete beams. One …
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Assessing the feasibility of yttria-stabilized zirconia in novel designs as mandibular anterior fixed lingual retention following orthodontic treatment.
… loading conditions to determine von Mises and bond stress. The most promising design was fabricated to assess accuracy and precision of current CAD/CAM milling technology. The superior design had a 1.0 x 0.5 mm semi-elliptical cross section and was shown to be fabricated reliably. Overall, the …
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High Spatial Resolution Measurement of Tendon Reinforcement in Underground Construction Works
… pull test assessment of reinforcement because bond stress and load development length can be quantified and related to bond strength models. Furthermore, several in-situ reinforcement mechanisms mobilized by excavation advancement were measured. These included stress redistributions facilitated …
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Experimental Evaluation and Analytical Modeling of Shear Bond in Composite Slabs
… design procedure. A model that relates the shear bond stress to slab slenderness, which can be used to estimate the shear interaction property for slabs with any slenderness, was developed. Finally, a finite element study was conducted to develop a simple modeling method that is suitable for …
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The mathematical modelling of concrete constitutive relationships
… crushing, aggregate interlock, creep, shrinkage, bond slip and rate of loading. Analytical methods have been improved in the past two decades as a result of the availibility of more powerful computers. It is, therefore, feasible to model these nonlinear features in order to conduct an analysis of …
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Bond Behavior of Fiber Reinforced Polymer Bars Under Hinged Beam Conditions
… and finished surface preparation were tested for bond strength parameters determined in accordance with ACI Committee Report 440.3. Bond strength parameters under the first condition were tested within NWC beams at a relatively low compressive strength and minimum embedment length; the second …
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Time-dependent response of flat plate structures under high sustained load
… may be exposed to high levels of sustained stresses resulting from errors in construction or design, abnormal loading, and material degradation. Although most RC structures are designed to withstand service level load with a large safety factor, errors may cause failure or overloading in a …