Cracking and Deflection Behavior of One-Way Parking Garage Slabs Reinforced with CFRP Bars

SP-264: Serviceability of Concrete Members Reinforced with Internal/External FRP Reinforcement Pub Date : 2009-10-01 DOI:10.14359/51663259

S. El-Gamal, B. Benmokrane, E. El-Salakawy

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引用次数: 6

Abstract

In this paper a laboratory investigation on the flexural behavior of carbon fiber reinforced polymer (CFRP)-reinforced concrete slab specimens extracted from Laurier-Tache Parking Garage (National Capital Region - Canada) after being in service field conditions for about eight years (1997-2005) is described. A total of four specimens, measuring 3 m long × 1 m wide × 0.19 m deep each, are extracted from the parking garage and then tested in flexure under four-point bending set-up. In addition, five FRP bar samples are extracted from the slabs and tested in tension to evaluate the strength or stiffness degradation of the CFRP bars, if any. The test results are presented in terms of deflection, crack widths, strains in concrete and reinforcement, ultimate capacity, and mode of failure. Based on the test results, the current provisions, provided by different FRP codes and design guidelines, are evaluated. The results showed that the CFRP bars as well as the CFRP-reinforced concrete slabs have not been adversely affected after being in service for eight years.

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CFRP筋单向停车库板的开裂与挠曲特性

本文对从加拿大国家首都地区的laurier - tacheparking Garage中提取的碳纤维增强聚合物(CFRP)-钢筋混凝土板试件进行了长达8年(1997-2005)的试验研究。从停车场中提取了四个试件，每个试件长3米，宽1米，深0.19米，然后在四点弯曲设置下进行了挠曲测试。此外，从楼板中提取5个FRP筋样品，进行拉伸测试，以评估CFRP筋的强度或刚度退化(如果有的话)。试验结果包括挠度、裂缝宽度、混凝土和钢筋的应变、极限承载力和破坏模式。根据试验结果，对不同FRP规范和设计指南提供的现行规定进行了评估。结果表明，CFRP筋和CFRP加筋混凝土板在使用8年后没有受到不利影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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SP-264: Serviceability of Concrete Members Reinforced with Internal/External FRP Reinforcement

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