SP-182: Structural Applications of Fiber Reinforced Concrete最新文献

Compressive Toughness Characterization of Normal and High-Strength Fiber Concrete Reinforced With Steel Spirals 钢螺旋增强普通和高强纤维混凝土的抗压韧性特性

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5526

G. Campione, S. Mindess

{"title":"Compressive Toughness Characterization of Normal and High-Strength Fiber Concrete Reinforced With Steel Spirals","authors":"G. Campione, S. Mindess","doi":"10.14359/5526","DOIUrl":"https://doi.org/10.14359/5526","url":null,"abstract":"Steel, polyolefin and carbon fiber reinforced concretes were combined with traditional transverse steel reinforcement in the form of steel spirals. The complete stress-strain relationship and the ductility of the concrete in compression in both the unconfined and confined states was evaluated. The compressive toughness was evaluated both according to the Japanese Standard JSCE - SP% and according to a new method proposed in the present work. The experimental program consisted of testing concrete cylinders under compression at two different strength levels: normal (48 MPa) and high strength (70 MPa), reinforced with different volume percentages of steel, polyolefin and carbon fibers. These tests were then repeated with the addition of spiral reinforcement with different pitches (25 and 50 mm). It was found that by combining fibers and steel spirals it is possible: (1) to obtain a high level of fracture energy dissipation, which could previously be obtained only by using a high volume percentage of spiral steel; and (2) to improve the maximum strain of the concrete, corresponding to the first failure of the spiral steel.","PeriodicalId":117541,"journal":{"name":"SP-182: Structural Applications of Fiber Reinforced Concrete","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124278710","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

Steel Fiber Reinforcement for Extruded Prestressed Hollow Core Slabs 挤压预应力空心芯板用钢纤维加固

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5523

C. Peaston, K. Elliott, K. Paine

{"title":"Steel Fiber Reinforcement for Extruded Prestressed Hollow Core Slabs","authors":"C. Peaston, K. Elliott, K. Paine","doi":"10.14359/5523","DOIUrl":"https://doi.org/10.14359/5523","url":null,"abstract":"An experimental investigation was conducted to assess the potential of steel fibers as secondary reinforcement in prestressed hollow core slabs. Following a brief laboratory study and a feasibility trial, a series of fibre reinforced extruded slabs were made at the premises of a local manufacturer and subsequently tested in shear: one of a number of potential modes of failure which cause concern in this type of slab because of the lack of shear or secondary reinforcement. The addition of the fibres increased both the ultimate strength and toughness of the slabs leading to safer and more controlled failures. The predictive equations of other researchers were shown to accurately estimate the shear strength in the case of plain hollow core slabs, but to overestimate the shear enhancement due to adding steel fibres. Additionally, the effect of the manufacturing process, in which the concrete is compacted by rotating augers, on the fibre distribution and orientation was investigated. While fibres were found to be randomly distributed within the cross-section, a tendency to align vertically within the webs was observed. This has particular relevance to the vertical shear performance.","PeriodicalId":117541,"journal":{"name":"SP-182: Structural Applications of Fiber Reinforced Concrete","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117329478","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: 13

Compressive Strength and Ductility of Steel Fiber Reinforced Concrete 钢纤维混凝土的抗压强度和延性

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5527

B. Massicotte, B. Mossor, A. Filiatrault, S. Tremblay

{"title":"Compressive Strength and Ductility of Steel Fiber Reinforced Concrete","authors":"B. Massicotte, B. Mossor, A. Filiatrault, S. Tremblay","doi":"10.14359/5527","DOIUrl":"https://doi.org/10.14359/5527","url":null,"abstract":"It is known that Steel Fiber Reinforced Concrete (SFRC) has advantages over plain concrete. In particular, fiber reinforcement makes concrete tougher and more ductile. Although these attributes are appealing for earthquake resisting structures, design codes do not yet incorporate specifications relative to the use of SFRC for structural applications. Recent developments have indicated a good potential for SFRC in structural and seismic applications. In the first part of this paper, the beneficial effects of SFRC in the seismic design of columns are briefly reviewed. The paper then presents an overview of an ongoing research project on column strength and ductility in which 18 columns were tested in uniaxial compression. The variables considered were the fiber content of 0%, 0.5% and 1.0% per volume, the amount of transverse reinforcement for confining the column core, and the confinement provided by the fibers in the cover. It is shown that SFRC improves significantly the post-peak behavior of columns for all hoop spacings and that SFRC can be juxtaposed with reduced traditional confining reinforcement under the same seismic design philosophy. Although SFRC in the cover delay its spalling, no noticeable confining contribution of the cover was observed. Fibers do not really confine concrete, but rather change the failure mode by limiting the progression of cracks and enhancing the aggregate interlock along failure planes.","PeriodicalId":117541,"journal":{"name":"SP-182: Structural Applications of Fiber Reinforced Concrete","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116171833","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: 8

High-Strength Concrete Beams Submitted to Shear: Steel Fibers Versus Stirrups 抗剪高强度混凝土梁:钢纤维与箍筋

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5521

P. Cananova, P. Rossi

引用次数: 23

Fiber Reinforced High-Performance Concrete Beams Material and Structural Behavior 纤维增强高性能混凝土梁材料与结构性能

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5520

M. Marazzini, G. Rosati

引用次数: 3

Bond of Deformed Bars to Concrete: Effects of Specialty Cellulose Fibers 变形钢筋与混凝土的粘结:特种纤维素纤维的作用

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5525

P. Soroushian, S. Ravanbakhsh

引用次数: 1

"Effect of Various Types of Fibers on Bond Capacity Experimental, Analytical, and Numerical Investigations" 不同类型纤维对粘结能力的影响的实验、分析和数值研究

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5524

K. Noghabai

引用次数: 5

High-Srength Fiber Reinforced Concrete Utilizing Closely Spaced Reinforcing Bars 利用紧密间隔钢筋的高强度纤维增强混凝土

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5518

B. Aarup

引用次数: 2

Structural Applications Using Ultra High-Strength Fiber Reinforced Concrete 超高强度纤维增强混凝土的结构应用

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5522

G. Bernier, M. Behloul, N. Roux

{"title":"Structural Applications Using Ultra High-Strength Fiber Reinforced Concrete","authors":"G. Bernier, M. Behloul, N. Roux","doi":"10.14359/5522","DOIUrl":"https://doi.org/10.14359/5522","url":null,"abstract":"Considerable progress has recently been achieved in strength and ductility of concretes. The use of superplasticizers and large amounts of silica fume led to densified cementitious matrices and improved adherence to the fiber reinforcement. These two properties are obtained with Compact Reinforced Composite (CRC) developed at Aalborg Portland and closely studied during a 3-year EC. The investigations reported in this paper cover the application of ultra high strength-fiber reinforced concrete to enhance performance of beams, columns and beam to column connections. Mechanical tests were performed on full-scale structural elements. Beams of 13 m in length, columns of 2.9 m in compression with and without eccentricity of the load, and beam to column connections were tested. In all cases, concrete strengths of more than 150 MPa were achieved. Due to CRC's high compacity and its extreme resistance to the penetration of aggressive elements, the CRC cover to the reinforcement was typically reduced from 30 mm to at least 12 mm. It has been shown that a reduction in concrete cover to the reinforcement is compatible with the requirements of structural applications. The tests carried out have shown the possibility of using ultra-high strength concrete for large-scale structural concrete elements and opens new fields of applications. This contributes to saving raw materials, weight and volume and to improving ductility and durability.","PeriodicalId":117541,"journal":{"name":"SP-182: Structural Applications of Fiber Reinforced Concrete","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121676801","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: 3

Structural Behavior of Steel Fiber Reinforced Concrete Beams in Shear 钢纤维混凝土梁在剪切作用下的结构性能

SP-182: Structural Applications of Fiber Reinforced Concrete Pub Date : 1999-05-01 DOI: 10.14359/5519

B. Oh, D. Lim, K. Hong, S. Yoo, S. Chae

引用次数: 15