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

A New Set-Up for FRP-Concrete Stable Delamination Test frp -混凝土稳定分层试验新装置

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14831

C. Mazzotti, M. Savoia, B. Ferracuti

引用次数: 12

Fire Endurance of Insulated FRP-Strengthened Square Concrete Columns 保温frp加固方形混凝土柱的耐火性能

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14892

V. Kodur, L. Bisby, M. Green, E. Chowdhury

引用次数: 11

Rationale for the ACI 440.1R-06 Indirect Deflection Control Design Provisions ACI 440.1R-06间接偏转控制设计规定的基本原理

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14859

C. E. Ospina, S. Gross

{"title":"Rationale for the ACI 440.1R-06 Indirect Deflection Control Design Provisions","authors":"C. E. Ospina, S. Gross","doi":"10.14359/14859","DOIUrl":"https://doi.org/10.14359/14859","url":null,"abstract":"Synopsis: Compared to ordinary steel reinforcement, Fiber-Reinforced Polymer (FRP) reinforcing bars have a lower stiffness, display a brittle-elastic response, and possess particular bond characteristics. The dependence on these distinctive features makes deflection control in FRP-reinforced concrete beams and one-way slabs a more elaborate process compared to the traditional serviceability design of steel-reinforced members. This paper reports the rationale and fundamental concepts backing the indirect deflection control procedure for concrete beams and one-way slabs reinforced with FRP bars adopted by ACI 440.1R-06. The fundamental procedure can be applied regardless of the type of reinforcement; it is independent of the member’s stiffness through the cracked stage; and it is expressed as a function of the deflection-span ratio, which allows designers to fully control deflections depending on applicable serviceability limits. The paper also explains the simplifications made to the fundamental procedure that led to the development of the indirect deflection control procedure in tabular form found in ACI 440.1R-06, including the method by which tension stiffening effects are accounted for.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"35 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":"123755617","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

Significance of Stress-Block Parameters on the Moment Capacity of Sections Under-Reinforced with FRP 应力块参数对FRP加固截面弯矩承载力的影响

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14908

G. Urgessa, S. Horton, M. Taha, A. Maji

引用次数: 10

Fatigue Behavior of Reinforced Concrete Beams Strengthened with Different FRP Laminate Configurations 不同FRP层合结构加固钢筋混凝土梁的疲劳性能

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14857

R. Gussenhoven, S. Breña

引用次数: 43

A Fracture Mechanics Approach for Interface Durability of Bonded FRP to Concrete FRP与混凝土粘结界面耐久性的断裂力学研究

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14904

J. Davalos, S. Kodkani, I. Ray, D. Boyajian

{"title":"A Fracture Mechanics Approach for Interface Durability of Bonded FRP to Concrete","authors":"J. Davalos, S. Kodkani, I. Ray, D. Boyajian","doi":"10.14359/14904","DOIUrl":"https://doi.org/10.14359/14904","url":null,"abstract":"Synopsis: Externally bonded GFRP fabrics are being increasingly used for seismic retrofit and rehabilitation of concrete structures, due to their high strength to weight ratio and low cost in comparison to carbon and aramid fibers. However, glass fibers are vulnerable to attack caused by harsh environmental weathering conditions such as freezing-thawing, wetting-drying, and exposure to alkaline and acidic environments. Concerned with durability, this study is based on fracture mechanics to evaluate the interface durability of GFRP bonded to Normal Concrete (NC) and High-Performance Concrete (HPC). Three types of specimens are evaluated: (1) newly bonded unconditioned specimens, (2) environmentally conditioned specimens, and (3) correspondingly base-line companion specimens. Two types of environmental ageing protocols are defined: (1) freeze-thaw cycling under in calcium chloride, used to simulate the deleterious effect of the deicing salts; and (2) alternate wetting and drying in sodium-hydroxide, used to simulate the alkalinity due to the presence of concrete pore water. Durability of the interface is characterized based on the critical strain energy release rate, under Mode-I loading, and weight and strain measurements. Considerable degradation of the interface bond is observed with increasing environmental cycling period.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"4 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":"115586862","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

Application of Tensioned CFRP Strip Method to an Existing Bridge CFRP条张拉法在某既有桥梁中的应用

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14887

A. Tateishi, A. Kobayashi, Y. Hamada, T. Takahashi, H. Yasumori

引用次数: 2

Cyclic In-Plane Shear of Concrete Masonry Walls Strengthened by FRP Laminates 用玻璃钢层压板加固的混凝土砌体墙的循环平面内剪力

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14840

Medhat A. Haroun, A. Mosallam, K. Allam

{"title":"Cyclic In-Plane Shear of Concrete Masonry Walls Strengthened by FRP Laminates","authors":"Medhat A. Haroun, A. Mosallam, K. Allam","doi":"10.14359/14840","DOIUrl":"https://doi.org/10.14359/14840","url":null,"abstract":"Synopsis: Cyclic in-plane shear tests were conducted on six full-scale walls built from reinforced concrete masonry units and strengthened by unidirectional composite laminates. Carbon/epoxy, E-glass/epoxy and pre-cured carbon/epoxy strips were placed on one or both sides of the walls. Each wall sample was loaded with a constant axial load simulating the gravity load, and incremental cyclic lateral shear loads were applied in accordance with the Acceptance Criteria (AC-125) of the International Code Council Evaluation Services (ICC-ES 2003). Displacements, strains and loads were continuously monitored and recorded during all tests. Evaluations of the observed strength and ductility enhancements of the strengthened wall samples are made and limitations of such retrofit methods are highlighted for design purposes. Results obtained from current tests indicated that the limit-state parameter influencing strength gain of the FRP retrofitted walls was the weak compressive strength of the masonry units, especially at the wall toe where high compression stresses exist. Despite such a premature failure caused by localized compression damage of the masonry at the wall toe, notable improvement in their behavior was achieved by applying the FRP laminates to either one or two sides of the walls. However, it should be cautioned that available theoretical models may significantly overestimate the shear enhancement in the FRP strengthened walls, if other limiting failure modes are not considered.","PeriodicalId":151616,"journal":{"name":"SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures","volume":"200 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":"125931295","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

Enhanced End Anchorage of Bonded FRP Repairs 加固玻璃钢修补的末端锚固

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14846

M. Chajes, W. Finch, H. Shenton

引用次数: 0

Performance of Corrosion-Damaged RC Columns Repaired by CFRP Sheets 碳纤维布修复腐蚀损伤钢筋混凝土柱的性能

SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures Pub Date : 2005-10-01 DOI: 10.14359/14903

S. Bae, A. Belarbi, J. Myers

引用次数: 12