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SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures最新文献

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Shear Strengthening Effects with Varying Types of FRP Materials and Strengthening Methods 不同类型FRP材料及加固方法的抗剪加固效果
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14915
J. Sim, G. Kim, C. Park, M. Ju
{"title":"Shear Strengthening Effects with Varying Types of FRP Materials and Strengthening Methods","authors":"J. Sim, G. Kim, C. Park, M. Ju","doi":"10.14359/14915","DOIUrl":"https://doi.org/10.14359/14915","url":null,"abstract":"Synopsis: The FRP system is a good alternative of the traditional shear strengthening technique. This study evaluates the shear strengthening effects on the reinforced concrete beams strengthened with varying types of FRP materials, CFRP, CFS and GFRP. The entire strengthened specimens were failed in the mode of brittle shear failure with debonding of the FRP materials. The shear capacities were improved mostly by more than 54%. The different types of the strengthening materials did not yield a noticeable difference in the shear strengthening effect. The orientation of the fibers, however, was found to be an important factor. With a 45° fiber orientation, greater strengthening effect and better control on the shear crack propagation were observed. A numerical model predicting the shear capacity of the shear-strengthened beams was suggested along with the strength efficiency factor from the test results. The predictions were in good agreement with the test results.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128357494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 29
"Rehabilitation of Plaza De Diego Building in San Juan, P.R. using CFRP" 圣胡安圣地亚哥广场建筑的CFRP修复工程
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14889
M. Ehsani
{"title":"\"Rehabilitation of Plaza De Diego Building in San Juan, P.R. using CFRP\"","authors":"M. Ehsani","doi":"10.14359/14889","DOIUrl":"https://doi.org/10.14359/14889","url":null,"abstract":"","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"120 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128488346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Post-Repair Performance of Corroded Bond Critical RC Beams Repaired with CFRP CFRP修复腐蚀粘结临界RC梁的修复后性能
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14854
B. Craig, K. Soudki
{"title":"Post-Repair Performance of Corroded Bond Critical RC Beams Repaired with CFRP","authors":"B. Craig, K. Soudki","doi":"10.14359/14854","DOIUrl":"https://doi.org/10.14359/14854","url":null,"abstract":"Synopsis: Presented in this paper is an investigation on the ability of externally applied fiber reinforced polymer (FRP) laminates to maintain bond of steel reinforcement in concrete members subjected to corrosion. Specimens were transversely confined with CFRP laminates in the bond zone after being subjected to various degrees of corrosion ranging from 2 to 10% theoretical mass loss. Some specimens were further corroded after repair to assess the effects of further structural deterioration. Control beams were subjected to minor amounts of corrosion and tested to failure without repair. Test results showed that CFRP wrapping was able to confine the corrosion cracking resulting in an overall flexural failure for all repaired specimens unlike the brittle bond splitting failures of the control specimens. CFRP confinement proved less effective at higher levels of pre-repair corrosion. Initial amounts of post-repair corrosion enhanced the performance of the CFRP repair by increasing the confining pressure; however the concrete rapidly deteriorated as the corrosion increased. In general, CFRP confinement was found to provide superior bond performance with respect to the unrepaired members indicating the potential future use in field applications of bond repair.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127219306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Debonding in FRP-Strengthened Debonding in FRP-Strengthened Shear-Span Ratios frp增强的剪切-跨比中的脱粘
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14845
Z. Wu, S. Hemdan
{"title":"Debonding in FRP-Strengthened Debonding in FRP-Strengthened Shear-Span Ratios","authors":"Z. Wu, S. Hemdan","doi":"10.14359/14845","DOIUrl":"https://doi.org/10.14359/14845","url":null,"abstract":"","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126641989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Durability of CFRP Sheet Reinforcement through Exposure Tests 通过暴露试验研究CFRP板增强材料的耐久性
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14901
I. Nishizaki, P. Labossiére, B. Sarsaniuc
{"title":"Durability of CFRP Sheet Reinforcement through Exposure Tests","authors":"I. Nishizaki, P. Labossiére, B. Sarsaniuc","doi":"10.14359/14901","DOIUrl":"https://doi.org/10.14359/14901","url":null,"abstract":"Synopsis: Over the last few years, the use of composite materials has become an increasingly popular method of repairing and strengthening ageing civil engineering structures. However, despite the efficiency and attractiveness of this technique, its market progression has been impaired by the relative lack of knowledge on the longterm behavior of the FRP materials themselves and, by extension, on the behavior of the structures strengthened with such products. The authors are conducting a 10-year exposure test program on FRP products, and this paper provides midway results from the first 5 years of exposure data. There was no significant change in the tensile strength of the CFRP laminates after a 5-year exposure, however in-plane shear strength showed a slight decrease. Bending strength of matrix resin also decreased in the early exposure stage. The results suggest a reduction of the bonding properties between carbon fibers and resin.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114122265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Innovative Technique for Seismic Upgrade of RC Square Columns 钢筋混凝土方柱抗震改造创新技术
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14894
A. Prota, G. Manfredi, A. Balsamo, A. Nanni, E. Cosenza
{"title":"Innovative Technique for Seismic Upgrade of RC Square Columns","authors":"A. Prota, G. Manfredi, A. Balsamo, A. Nanni, E. Cosenza","doi":"10.14359/14894","DOIUrl":"https://doi.org/10.14359/14894","url":null,"abstract":"Synopsis: The preliminary results of an experimental investigation on under-designed RC square columns are presented in the paper. The seismic upgrade was achieved by combining steel spikes and GFRP laminates. Two parameters are investigated: the lap splice of the longitudinal steel reinforcement and the level of axial load. A comparison between as-built and strengthened columns is presented in terms of strength and ductility. The shear-top displacement relationships of strengthened columns are analyzed to assess the influence on the global performance of the lap splice. This preliminary analysis confirms that the proposed solution for the seismic strengthening of under-designed columns is very effective when it is necessary to relocalize the potential plastic hinges of columns by increasing their flexural strength. The obtained results will represent the basis for developing design criteria for the strengthening of similar interventions and will represent a reference for the calibration of a model of the strengthened column.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114481297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
"Manufacturing, Durability and BondBehavior of FRP Bars with Nanoclay" 纳米粘土FRP筋的制造、耐久性和粘结性能
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14826
P. Vijay, H. Gangarao, V. Krishnaswamy
{"title":"\"Manufacturing, Durability and BondBehavior of FRP Bars with Nanoclay\"","authors":"P. Vijay, H. Gangarao, V. Krishnaswamy","doi":"10.14359/14826","DOIUrl":"https://doi.org/10.14359/14826","url":null,"abstract":"","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115640746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Finite Element Modeling of Concrete Bridge Deck Slabs Reinforced with FRP Bars FRP筋加固混凝土桥面板的有限元模拟
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14873
A. El-Ragaby, E. El-Salakawy, B. Benmokrane
{"title":"Finite Element Modeling of Concrete Bridge Deck Slabs Reinforced with FRP Bars","authors":"A. El-Ragaby, E. El-Salakawy, B. Benmokrane","doi":"10.14359/14873","DOIUrl":"https://doi.org/10.14359/14873","url":null,"abstract":"Synopsis: This paper presents the results of a finite element analysis for three different bridges that have been recently constructed and tested in North America. In these bridges, different types of reinforcement (steel and FRP reinforcing bars) were used as reinforcement for the concrete deck slabs. Two bridges, Magog Bridge and Cookshire-Eaton Bridge, are located in Quebec, Canada, while the third one, Morristown Bridge, is located in Vermont, USA. The three bridges are girder-type with main girders made of either steel or prestressed concrete. The main girders were either simply or continuously supported over spans ranging from 26.2 to 43.0 m. The deck was a 200 to 230 mm thickness concrete slab continuous over spans of 2.30 to 2.8 m. Different types, sizes, and reinforcement ratios of glass and carbon FRP reinforcing bars were used. Furthermore, the three bridges are located on different road or highway categories, which mean different traffic volumes and environments. The bridges were tested for service performance using calibrated truckloads. The results of the field load tests were used to verify the finite element model. Comparisons showed that FEM can predict the behavior of such elements. Then, the model was used to investigate the effect of the FRP reinforcement type and ratio on the service and ultimate behavior of these bridge decks. According to the findings, a proposed reinforcement ratio was recommended and verified using the FEM to meet the strength and serviceability requirements of the design codes.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128715516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Freeze-Thaw Behavior of FRP-Confined Concrete under Sustained Load frp约束混凝土在持续荷载作用下的冻融性能
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14862
A. Kong, A. Fam, M. Green
{"title":"Freeze-Thaw Behavior of FRP-Confined Concrete under Sustained Load","authors":"A. Kong, A. Fam, M. Green","doi":"10.14359/14862","DOIUrl":"https://doi.org/10.14359/14862","url":null,"abstract":"Synopsis: Fiber-reinforced polymers (FRPs) are effective in strengthening concrete structures. However, little work has examined the effects of cold regions on the behavior of the strengthened members, particularly the combined effects of sustained loading and freeze-thaw exposure. This paper presents the results of an experimental study on the durability of 70 normal weight, low strength, and non-air entrained concrete cylinders (150 x 300mm). The cylinders were confined with glass-FRP (GFRP) sheets or carbon-FRP (CFRP) sheets and exposed to 300 freeze-thaw cycles while under sustained axial compression loads. FRP-wrapped cylinders showed exceptional durability performance after their extreme exposure to freeze-thaw and sustained loading with a maximum of 12% reduction in strength. Some CFRP wrapped cylinders that were exposed to freeze-thaw without longitudinal restraint, by means of sustained loads, and all the plain concrete cylinders were completely disintegrated with virtually zero residual strength.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127560616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Guide Examples for Design of Concrete Reinforced with FRP Bars FRP筋混凝土设计指南实例
SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14874
W. K. Feeser, V. Brown
{"title":"Guide Examples for Design of Concrete Reinforced with FRP Bars","authors":"W. K. Feeser, V. Brown","doi":"10.14359/14874","DOIUrl":"https://doi.org/10.14359/14874","url":null,"abstract":"","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126033644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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