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Showing 1 to 20 of 32 for “"development length"”.
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Lap Splice Development Length of Rebar in Stabilized Hollow Interlocking Compressed Earth Blocks
<p>This thesis investigates the tensile performance of unconfined lap splices in specimens constructed from interlocking compressed earth block (ICEB) units. All lap splice specimens were constructed from hollow ICEB half units with one side grouting channel. ICEB units used in this research were …
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Transfer Length, Development Length, Flexural Strength, and Prestress Loss Evaluation in Pretensioned Self-Consolidating Concrete Members
… concrete versus normal concrete on transfer and development lengths, and flexural strengths of prestressed members. Three small rectangular members were made, two cast with SCC mixes and one cast with a conventional mix, to determine the transfer length of each mix. Transfer lengths of both ends …
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Investigation of Transfer Length, Development Length, Flexural Strength and Prestress Loss Trend in Fully Bonded High Strength Lightweight Prestressed Girders
… the reduction of dead loads in bridges. Transfer Length measurements conducted on two AASHTO Type IV HSLWC prestressed girders, resulted in an average transfer length of 17 inches, well below the AASHTO and ACI guidance. Two girders composed of HSLWC AASHTO Type II girders and a 48" x 8" normal …
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Bond Strength and Development Length of Sand-Coated GFRP Bars Spaced and Bundled in Normal Strength and Ultra-High-Performance Fibre-Reinforced Concrete
… experimentally examines the bond strength and development length (Ld) of three sand- coated glass fibre-reinforced polymer (GFRP) bar sizes (#4, 5 and 8) embedded into ultra-high- performance fibre-reinforced concrete (UHPFRC) with 2% steel fibres. It also examines the Ld of sand-coated #5 GFRP …
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Top Strand Effect and Evaluation of Effective Prestress in Prestressed Concrete Beams
… effect" was evaluated through transfer and development length tests of prestressed concrete beams. Eight beams were cast with normal orientation, while four beams were cast with inverted orientation so that a significant depth of fresh concrete was placed below prestressing strands. Discrete …
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Grade 300 Prestressing Strand and the Effect of Vertical Casting Position
… the as-cast vertical location had on transfer length, development length, and flexural strength and to resolve the discrepancies regarding the definition of the top-bar/strand effect. Two types of test specimens were fabricated and tested investigating each respective item. The increase in …
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An experimental study of the wall characteristics of a local fluid constriction plasma generator
… and diminishes with axial distance. The thermal development length is the axial extent of that region in the plasma generator duct where the local efficiency is nonzero. This length varies with mass flow rate, current, and duct diameter. Nondimensionalization of the energy equation results in a …
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Evaluation of surface roughness and bond-slip behavior of new textured epoxy-coated reinforcing bars
… steel, which often results in the early development of transverse cracks in bridge decks. To solve this problem, the Illinois Department of Transportation (IDOT) proposed a new type of textured epoxy-coated (TEC) reinforcing bars with applied roughness to improve the bond between concrete …
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Fatigue of Masonry Walls with CFRP Applied Externally for Out-of-Plane Loads
… reinforcement has sufficient strength and development length. Additional findings were made as a result from the testing. The development length of a vertical CFRP strip can be increased by adding a horizontal CFRP strips near the critical section and surface damage to CFRP may have severe …
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Structural Performance of High Strength Lightweight Concrete Pretensioned Bridge Girders
… bridge design specifications for transfer length, development length, prestress loss, camber, and flexural capacity are satisfactory for use with fully-bonded, pretensioned flexural members consisting of HSLWC and to make recommendations for improvements where necessary. Twelve high …
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Optimization of Reinforced Concrete Structures
… concrete cover, spacing, web reinforcement, development length and cutoff points of longitudinal reinforcement. Design examples include simply supported beams, continuous beams and small frames. From a practical standpoint the method developed can be a valuable tool for design of reinforced …
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Influence of diet on black soldier fly (hermetia illucens linnaeus) (diptera: stratiomyidae) life history traits
… diet. Diet was found to affect black soldier fly development with respect to time to reach particular stages of development, length, weight and mortality at different stages of development. Black soldier fly larvae were able to consume the most waste that was high in fat and energy content. Diets …
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Implementation and Verification of a Synthetic Eddy Method (SEM) in the Eagle3d Compressible Flow Solver
… of this solver combination in accuracy and development length. Parametric studies of grid dependence, varying upstream Reynolds-Averaged Naiver-Stokes (RANS) data and prescribed eddy length scale are performed. Modifications to the SEM are prescribed and tested where suitable. Further …
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A Phenomenological Study of Young Women With Fibromyalgia: "It's Not All In My Head"
… participants with FM, related to growth and development, length of time from symptoms to diagnosis, and response to frequently prescribed medications. Additionally, future research related to this younger demographic should be cognizant of the unique methods – described in this study – of the …
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Fatigue Strengthening of Damaged Steel Plates using Ultra-High Modulus Carbon Fibre-reinforced Polymer Plates
… cracks. The study investigates a range of bond lengths at or below the development length of UHM CFRP for applications where bonding space may be limited or accessibility restricted, together with the effect of single- versus double-sided application, on fatigue performance. It also compares …
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The Influence of Development and Fan/Screen Interaction on Screen-Generated Total Pressure Distortion Profiles
… using wire mesh screens. Although the inlet duct development of total pressure distortion patterns has been studied in a historical context when distortion effects on engine performance were first of interest, these were typically simplified experimental studies for low-speed flows. To aid in the …
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Transfer and Development Lengths of Steel Strands in Full-Scale Prestressed Self-Consolidating Concrete Bridge Girders
… strength, including its impact on transfer and development lengths in prestressed members, is essential to safely implement SCC in prestressed design. The Illinois Department of Transportation (IDOT) has sponsored a three-phase study exploring the bond behavior of steel strands in prestressed …
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Glass Fiber Reinforced Polymer Bars as the Top Mat Reinforcement for Bridge Decks
… coefficient for crack width calculations, and development length. The results and conclusions address design concerns of the different types of FRP bars as applied in the top mat of reinforcement of a bridge deck. A secondary objective was to evaluate the disparity in results between direct …
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Influence of initial turbulence intensity on the heat and moisture transfer through a recirculated air curtain
… and humidity. This investigation describes the development and verification of an eddy viscosity model which accounts for the influence of the initial turbulence intensity on the transfer of heat and moisture across a recirculated air curtain. The control of the turbulence intensity at the …
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CFRP as Shear and End-Zone Reinforcement for Concrete Bridge Girders
… has not been previously investigated. First, the development length of NEFMAC grid was determined. Next, an 18 ft long 19 in. deep beam, modeled after prestressed Bulb-T beams, was created with NEFMAC grid reinforcement. The beam was loaded with a single point load near the support to induce shear …
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