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 16 of 16 for “"dowels"”.
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Tapered plate dowels for jointed concrete slabs
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Evaluation of jointed plain concrete pavement (JPCP) with FRP dowels
… their response with JPCP consisting of steel dowels. Along with laboratory and field evaluations of JPCP with FRP and steel dowels, analytical modeling of dowel response has been carried out in terms of maximum bending deflection, relative deflection and bearing stress of dowels.;Laboratory …
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Velocity and Turbulence Characteristics in Flows Through Rigid Vegetation
… vegetation was simulated by an array of acrylic dowels mounted to the bed of a recirculating hydraulic flume. Velocity measurements were taken in both the longitudinal and vertical directions using a one-dimensional laser doppler velocimeter (LDV). Experiments were conducted under partially …
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Dowel-concrete contact characteristics
… stresses in concrete surrounding uncoated steel dowels is higher than those obtained if the dowels are coated using bond-breaker. (Abstract shortened by UMI.).
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Performance of doweled concrete joints subjected to fatigue loading
… the behavior of shokbars versus regular dowels. Simulated rigid pavements joints were used for an experimental and finite element study where both devices were subjected to static and fatigue loading. (Abstract shortened by UMI.).
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The Strength of Reinforced and Prestressed Concrete Beams Subjected to Combined Bending, Torsion and Shear
… investigations on the behaviour and strength of dowels in concrete are given.
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Flow through Rigid Vegetation Hydrodynamics
… through a vegetation array simulated by rigid dowels. Velocity data were collected with a one dimensional laser Doppler velocimeter (LDV) under single layer emergent and submerged flow conditions, and through two layers of vegetation. The effects of dowel arrangement, density, and roughness are …
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Aquatic gravity currents through emergent vegetation
… in a laboratory flume with rigid cylindrical dowels as model vegetation. Experimental observations were consistent with the theory. Under high stem drag or low stem Reynolds number conditions, the interface deviated from the well-documented block profile associated with unobstructed …
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Momentum and scalar transport in vegetated shear flows
… flows. Flume experiments were conducted with dowels and buoyant polyethylene strips used to mimic rigid canopies and flexible seagrass meadows respectively. Although traditionally treated as rough boundary layers, vegetated shear flows more closely resemble mixing layers. Specifically, …
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Seismic modeling, analysis and design of structural concrete pile-deck connections
… resulting rotations due to slip of reinforcing dowels at the pile-deck interface, (ii) the evaluation of damage indices reported in the literature, for use in characterizing the ensuing nonlinear behavior, and (iii) a parametric study of structural interactions affecting pile-deck connections. …
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Column Footings Strengthened with External Prestressing and External Wrapping Systems
… achieved by installing a large number of steel dowels and splicing the flexural reinforcements, which are labor-intensive and time-consuming. To address this problem, five upgraded footing enlargement systems are proposed in this dissertation:</p> <p>• Circular external prestressing system …
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Quantification and assessment methods for large wood (LW) in fluvial systems
… smart sensors are implanted into scaled wooden dowels, resulting in ‘SmartWood’, being able to capture complex movement processes of wood in a hydraulic laboratory environment. Each of the smart sensors comprises an internal processor for time-synchronisation of accelerometer, gyroscope and …
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Evaluation of strata conditions and performance of support systems of the Emerald Shaft Gold Mine in Gauteng Province of South Africa
… measures include the installation of grouted dowels, pre-stressed elongates, and fibre-reinforced shotcrete. Regular monitoring and maintenance of support systems are crucial to ensure their effectiveness and prevent accidents. The study's findings and recommendations provide valuable insights …
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Factors Affecting Heat Transfer from Firebrands and Firebrand Piles and the Ignition of Building Materials
… and real firebrands, suggesting that using dowels as surrogate firebrands may produce higher heat fluxes than expected from real firebrands. Pile mass did not appear to significantly impact the heat flux from firebrand piles. The last phase of this research developed a simple engineering …
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Investigation of flow characteristics in an open channel with one-line semicircular vegetation patches
Experiments are conducted in an open channel with semi-circular patches distributed on one sidewall of the channel in which velocity distribution, turbulent intensity, and vortex generation are analyzed. The resistance force offered by a vegetation patch causes the change in water depth which have …