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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 20 of 21 for “"Pull-out tests"”.
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The break-out behaviour of a suction anchor embedded in a granular soil.
… The experimental work comprised flow measurement tests on model suction anchors, pull-out tests on the model anchors with or without applied suction pressure, pull-out tests on the anchor shaft with or without suction pressure and pull-out tests on the prototype suction anchor. The primary …
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The response of a suction anchor group to various applied loadings.
… arrangement are presented and discussed. The tests were conducted in saturated granular soil, contained in a 1.8 m diameter tank, in both loose and dense states. The model anchors and the test apparatus were instrumented so that the pore pressure distribution due to puitping, the water flow …
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CFRP Prestressed Concrete Exposed to Moisture
… of the rods would cause the concrete to crack. Pull-out tests were conducted on stressed and unstressed CFRP rods cast in concrete cubes and immersed in water for up to 125 days. Six CFRP prestressed concrete prisms were fabricated, three were immersed in water for over 125 days and three were …
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Repair of damaged end regions of prestressed concrete girders using fiber reinforced polymer composite materials
… In the first phase of the study, direct shear pull-out tests on glass-FRP (GFRP) and carbon-FRP (CFRP) externally bonded laminate and NSM bar concrete specimens are performed. An accelerated aging scheme consisting of freeze/thaw cycling in the presence of a deicing salt solution is implemented …
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Comparison and results of sheet pile interlock analysis
… the program is modified to simulate a sheet pile pull-out test with a new finite element mesh. The improved mesh contains a full-length sheet pile with both of its interlocks connected to two half-length sheet piles. The results are presented and compared with the results of the pull-out tests …
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Anchorage bond in concrete bases
Five series of tests were performed to investigate the anchorage bond stresses in concrete bases. In Series I to IV concrete base specimens were loaded and column starter bar strains measured for different supporting conditions of the base. Curves indicating the distribution of steel compressive …
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Bond strength history in prestressed concrete reactor vessels
… creep. Two experiments have been carried out during this research. The purpose of the first experiment was to determine bond coefficients required for the analysis. This was achieved by pull-out tests on prestressing specimens using 5 mm and 7 mm diameter prestressing wires. The second …
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Estudo em modelo reduzido, em material granular, do comportamento de sistemas de contenção, paredes ancoradas e solo reforçado, utilizando um tipo não convencional de reforço e ancoragem
… anchorages and between reinforcing elements. Pull out tests of isolated anchorages and determination of at rest, active and passive earth pressure of soil without presence of anchorages neither reinforcing elements were also made. The research allowed us the following information: l) Values of …
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Performance of No Vibration/No Admixture Masonry Grout Containing High Replacement of Portland Cement with Fly Ash and Ground Granulated Blast Furnace Slag
… structural designs typically require fully grouted walls. The grouting process is labor-intensive, time-consuming and has a high energy demand due to requirements of consolidation in each and subsequent grout lifts. Self-consolidating grout with admixtures has been successfully used without …
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Evaluation of surface roughness and bond-slip behavior of new textured epoxy-coated reinforcing bars
… 2-D and 3-D roughness parameters. Second, direct pull-out tests are conducted on concrete specimens with embedded 1) BLK, 2) smooth epoxy-coated (SEC), and 3) different types of TEC bars to compare their bond characteristics. Then, multiple 3-D finite element models are developed and calibrated to …
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Experimental investigation of bridge deck with textured epoxy-coated rebars subjected to thermal loading
… distribution in bridge decks. Furthermore, pull-out tests are carried out on the TEC rebars, and their roughness parameters are determined to contrast the results with the database reported in the literature. Finally, given the specialized equipment and time-consuming procedure needed to …
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Load transfer mechanism of fully grouted cable bolts.
Fully grouted cable bolts have been used in the mining industry for more than fifty years. However, failure of cable bolting systems still occurs in mine sites, as a result of insufficient load transfer between the rock mass and the cable bolt. Numerous research studies have been conducted to …
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The development of shaft friction and end bearing resistance for dynamically driven model piles
… programme was then developed for the main tests using an Orion Data Logger interfaced with a Commodore PET micro computer. The static load data was stored on discs whilst the transient data was recorded on magnetic tape for later analysis.<br/><br/>A pneumatically controlled rig was …
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The development of shaft friction in semi-fullscale piles passing through granular soils
… of each sand layer.<br/><br/>A series of loading tests was carried out in loosely placed and compacted sand layers. The test data was recorded on punched tape. Processing and plotting of the test results was accomplished using the facilities of the DECsystem-20 computer. The results …
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Use of end-of-waste foamed fibers and aggregates into a cementitious mortar
… that meets the needs of the present without compromising the ability of future generations to meet their own needs”. Sustainable development should take into account economic growth, social equality and environmental protection. The construction industry involves all these fields: the …
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Glued-in re-bar connection
… effective. The testing consisted of preliminary pull-out tests used to establish the embedment length needed to induce steel failures. Additional testing examined the behavior of glued-in rod joints used as a beam splice connection, a column foundation joint loaded with horizontal forces, and …
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Effect of grading and grain size on the friction characteristics of a sand/geotextile inteface
… by conducting extensive laboratory interface tests both in direct shear and pull-out. A comprehensive test program was established to include a needle punched non-woven geotextile interacting with sands of different grading, grain size distributions and grain shapes namely; Cape Flats, …
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Corrosion of steel reinforcement in concrete. Corrosion of mild steel bars in concrete and its effect on steel-concrete bond strength.
This thesis reports on the research outcome of corrosion mechanism and corrosion rate of mild steel in different environments (saline, alkaline solutions and concrete media) using potentiodynamic polarization technique. The study also included the effect of corrosion on bond strength between …
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Investigation of the critical specific gravity for cables and pipelines during various backfilling and installation processes
… investigated by means of scaled physical model tests. The purpose of the investigation was to optimise the specific gravity (SG) of pipelines and cables to minimise flotation or movement during installation. The issues under considerations were the flotation of pipelines/cables in high moisture …
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Embedded liquid-laminated connections for structural glass applications
… eliminating drilling of the glass. About a decade ago, a new type of adhesive connection emerged, known as embedded laminated glass connections, that has significantly improved the load-bearing capacity and appearance of glass connections. Typically, these connections consist of a …
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