SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures最新文献_第4页

In-plane Strengthening of Unreinforced Masonry Walls with Prestressed GFRP Bars GFRP筋无配筋砌体墙的面内加固

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14839

P. Yu, Pedro F. Silva, A. Nanni

引用次数: 0

Bond Strengthening of Steel Bars Using External FRP Confinement: Implications on the Static and Cyclic Response of R/C Members 使用外部FRP约束加强钢筋粘结:对R/C构件静力和循环响应的影响

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14855

M. Harajli

引用次数: 2

Time Depending Thermo Mechanical Bond Behavior of Epoxy Bonded Pre-Stressed FRP-Reinforcement 环氧树脂粘结预应力frp -钢筋随时间的热机械粘合行为

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14860

K. Borchert, K. Zilch

{"title":"Time Depending Thermo Mechanical Bond Behavior of Epoxy Bonded Pre-Stressed FRP-Reinforcement","authors":"K. Borchert, K. Zilch","doi":"10.14359/14860","DOIUrl":"https://doi.org/10.14359/14860","url":null,"abstract":"Synopsis: The development of different pre-stressed epoxy bonded CFRPreinforcement systems for retrofitting RC-structures continues. In addition to requirements concerning the ultimate limit state (ULS) pre-stressed systems could satisfy demands in regard to the serviceability state (SLS) like crack limitation or fatigue. In comparison with the well known material behavior of concrete under sustained loading epoxy resins show material properties more sensitive to thermal effects, for example loss of strength or creep deformations. In experimental tests the influence of permanent load and temperature is examined. The pure epoxy resin adhesive was evaluated in lab-shear tests and the structural behavior of the system in the form of epoxy bonded pre-stressed near surface mounted CFRP-strips. The experiments reveal a significant influence of the epoxy resin adhesive behavior on the long-term structural behavior in service. To evaluate the effects with regard to designs relevant problems as long-term development of transfer lengths of pre-stressed reinforcement or of the slip between reinforcement and concrete under varying load and thermal conditions results of a simulation model are presented.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"36 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":"133356300","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

Probabilistic Based Design for FRP Strengthening of Reinforced Concrete 基于概率的FRP加固钢筋混凝土设计

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14863

R. Atadero, V. Karbhari

引用次数: 10

Design and Construction of a Bridge Deck using Mild and Post-Tensioned FRP Bars 采用后张FRP筋的桥面设计与施工

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14884

R. Fico, N. Galati, A. Prota, A. Nanni

引用次数: 5

Local Bond-Slip Characteristics of G-FRP Bars G-FRP筋的局部粘结滑移特性

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14905

S. Tastani, S. Pantazopoulou, P. Karvounis

引用次数: 2

Static and Fatigue Bond Characteristics of Interfaces between CFRP Sheets and Frost Damage Experienced Concrete CFRP薄板与冻损混凝土界面的静力与疲劳粘结特性

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14907

J. Dai, Y. Saito, T. Ueda, Yasuhiko Sato

{"title":"Static and Fatigue Bond Characteristics of Interfaces between CFRP Sheets and Frost Damage Experienced Concrete","authors":"J. Dai, Y. Saito, T. Ueda, Yasuhiko Sato","doi":"10.14359/14907","DOIUrl":"https://doi.org/10.14359/14907","url":null,"abstract":"Synopsis: Both short and long-term performances of repaired or strengthened concrete structures using external FRP bonding are greatly affected by states of bonding substrates, which are covercrete and may have experienced various damages. One of them is frost damage in cold regions. This paper intends to investigate how the initial frost damages in concrete influence the static and fatigue bond performances of CFRP/concrete interfaces. Concrete specimens were exposed to freeze and thaw cycles before being bonded with CFRP sheets. The initial frost damage of concrete was controlled approximately at three different levels in terms of its relative dynamic modulus of elasticity, which was 100% (non frost damage), 85% and 70%, respectively. Test results showed that failure modes of CFRP/concrete bonded joints with initial frost damage in concrete were the delamination of covercrete. By contrast the joints without initial frost damage failed in a thin concrete layer as usual. Moreover, CFRP/concrete joints with and without initial frost damage showed different manners in their interface bonding strength and stiffness. If the initial frost damage existed in concrete substrate the effective bond length of CFRP/concrete joints was increased due to the decrease of the bonding stiffness and interfacial fracture energy. Fatigue testing results indicated that the linear slopes of S-N curves of CFRP/concrete bonded joints were not influenced by the initial frost damage. The initial frost damage did not shorten the fatigue life of CFRP/concrete joints if a same relative tensile stress level was kept in the FRP sheets, where the relative tensile stress level was defined as a ratio of the applied tensile force in FRP sheets for the fatigue tests to the maximum static pullout one achieved in each test series.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"115 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":"124122733","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

The Effect of Adhesive Type on the Bond of NSM Tape to Concrete 粘结剂类型对NSM胶带与混凝土粘结的影响

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14842

C. Shield, C. French, E. Milde

引用次数: 23

Finite Element Modeling of Cyclic Behavior of Shear Wall Structure Retrofitted using GFRP 玻璃钢加固剪力墙结构循环性能有限元模拟

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14895

Z. Li, T. Balendra, K. Tan, K. H. Kong

引用次数: 18

Experimental Investigation on Flexural Behavior of RC Beams Strengthened by NSM CFRP Reinforcements NSM CFRP加固RC梁受弯性能试验研究

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14867

W. Jung, Y.H. Park, J. Park, J. Kang, Y. You

{"title":"Experimental Investigation on Flexural Behavior of RC Beams Strengthened by NSM CFRP Reinforcements","authors":"W. Jung, Y.H. Park, J. Park, J. Kang, Y. You","doi":"10.14359/14867","DOIUrl":"https://doi.org/10.14359/14867","url":null,"abstract":"Synopsis: This study presents the results of experiments performed on RC (Reinforced Concrete) beams strengthened with NSM(Near Surface Mounted) reinforcement. A total of 8 specimens have been tested. The specimens can be classified into EBR(Externally Bonded Reinforcement) specimens and NSM(Near Surface Mounted) reinforcements specimens. Two of NSM specimens were strengthened with 12 mechanical interlocking grooves with a width of 20 mm and spacing of 200 mm in order to prevent debonding failure of the CFRP(Carbon Fiber Reinforced Polymer) reinforcement. Experimental results revealed that NSM specimens used CFRP reinforcements more efficiently than the EBR specimens, but debonding failure between adhesive and concrete occurred. This showed that, similarly to EBR specimens, NSM specimens also required countermeasures against debonding failure. Failure mode of NSM specimens added with mechanical interlocking grooves failed by rupture of CFRP rod and strip. The measured ultimate load showed an increase of 15% compared with the common NSM specimens. The application of mechanical interlocking grooves made it possible to avoid debonding failure and to enhance strengthening performance.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"29 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":"121056274","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: 52