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GFRP Shear Grid for Precast, Prestressed Concrete Sandwich Wall Panels.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Soriano, Jonathan Gabriel |
| Copyright Year | 2012 |
| Abstract | SORIANO, JONATHAN GABRIEL. GFRP Shear Grid for Precast, Prestressed Concrete Sandwich Wall Panels. (Under the direction of Sami H. Rizkalla, Ph.D.) Prestressed precast concrete sandwich wall panels have typically been used for the construction of building envelopes for a wide variety of structures. These panels consist of two discrete layers of reinforced concrete separated by a rigid foam layer. Panels are typically designed to carry gravity and wind loads, are able to insulate the entire structure, and can provide for specific interior and exterior wall finishes. These panels can be designed to resist the applied loads in a composite, partial composite, or non-composite action. The transfer of shear forces between the two concrete wythes, through the insulative layer, determines the degree of composite action. The composite action allows the panel to act as a whole, instead of resisting loads individually by each concrete wythe, providing structural efficiency. Presence of the insulation material allows the panel to be thermally efficient. Therefore, the panels become structurally and thermally efficient. This thesis summarizes the extensive experimental work undertaken to evaluate the use of glass fiber reinforced polymer (GFRP) grid and rigid foam insulation system as a shear transfer mechanism for precast load bearing sandwich panels and architectural cladding. GFRP grid has a significantly lower thermal conductivity in comparison to steel and concrete, while being less expensive than other types of FRP such as carbon FRP. Therefore, it can provide an economical solution for the shear transfer mechanism. The experimental program investigated several parameters believed to affect the shear flow strength of the GFRP grid/rigid insulation mechanism. These parameters included the type and thickness of rigid foam insulation and the spacing between the rows of GFRP grid. A total of ninety panels were tested in in direct shear in two phases to evaluate the shear flow strength of these parameters. Test results were used to develop an equation to estimate the shear flow strength using the GFRP grid/rigid foam as affected by these parameters. Six flexural specimens were also tested to determine the level of composite action which can be achieved by the glass FRP grid as a shear transfer mechanism. GFRP Shear Grid for Precast, Prestressed Concrete Sandwich Wall Panels by Jonathan Gabriel Soriano A thesis submitted to the Graduate Faculty of North Carolina State University in partial fulfillment of the requirements for the Degree of Master of Science Civil Engineering Raleigh, North Carolina 2013 APPROVED BY: _ Rudolf Seracino, Ph.D. _ James M. Nau, Ph.D. _ Sami H. Rizkalla, Ph.D. Committee Chair ii DEDICATION I dedicate this thesis to my loving and devoted wife Mary Elizabeth Soriano. Thank you for your unwavering encouragement, love, and spiritual support that made this accomplishment possible. I would also like to dedicate this thesis to my parents, Maritza and Guillermo Soriano, thank you for your love, support, strength, and countless sacrifices raising me into the person I am today. Thank you |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repository.lib.ncsu.edu/bitstream/handle/1840.16/8277/etd.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
