Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets
This paper presents the results of an experimental study on the flexural behaviour of low-strength reinforced concrete beams strengthened with externally bonded carbon fibre sheets and on the bond behaviour between these sheets and concrete. The applied sheets without additional anchorage always deb...
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| Veröffentlicht in: | Composites. Part B, Engineering Engineering, 2013-02, Vol.45 (1), p.117-126 |
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| container_title | Composites. Part B, Engineering |
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| creator | Li, Xiang Gu, XiangLin Song, XiaoBin Ouyang, Yu Feng, ZhanLei |
| description | This paper presents the results of an experimental study on the flexural behaviour of low-strength reinforced concrete beams strengthened with externally bonded carbon fibre sheets and on the bond behaviour between these sheets and concrete. The applied sheets without additional anchorage always debonded from the surface of the tested specimens. With the help of U-shaped strips applied at the ends of longitudinal sheets, the load bearing capacity and deforming ability of the strengthened beams could be significantly improved. Based on the fracture mechanics model, the effective shear force between these sheets and concrete was determined. According to the brace-arch model and a further parametric study, it was found that the bearing load of a strengthened beam without additional anchorage increased with the concrete strength and that the calculated capacity of a strengthened beam increased with the sectional area of sheets in a more effective rate when U-shaped strips were applied. |
| doi_str_mv | 10.1016/j.compositesb.2012.09.036 |
| format | Article |
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The applied sheets without additional anchorage always debonded from the surface of the tested specimens. With the help of U-shaped strips applied at the ends of longitudinal sheets, the load bearing capacity and deforming ability of the strengthened beams could be significantly improved. Based on the fracture mechanics model, the effective shear force between these sheets and concrete was determined. According to the brace-arch model and a further parametric study, it was found that the bearing load of a strengthened beam without additional anchorage increased with the concrete strength and that the calculated capacity of a strengthened beam increased with the sectional area of sheets in a more effective rate when U-shaped strips were applied.</description><identifier>ISSN: 1359-8368</identifier><identifier>EISSN: 1879-1069</identifier><identifier>DOI: 10.1016/j.compositesb.2012.09.036</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>A. Carbon fibre ; Anchorages ; Applied sciences ; B. Adhesion ; B. Strength ; Beams (structural) ; Bearing capacity ; Bonding ; Bonding strength ; C. Analytical modeling ; carbon ; Carbon fibers ; Composites ; concrete ; Exact sciences and technology ; Forms of application and semi-finished materials ; Laminates ; mechanics ; Physicochemistry of polymers ; Polymer industry, paints, wood ; Reinforced concrete ; Strip ; Technology of polymers</subject><ispartof>Composites. 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Part B, Engineering</title><description>This paper presents the results of an experimental study on the flexural behaviour of low-strength reinforced concrete beams strengthened with externally bonded carbon fibre sheets and on the bond behaviour between these sheets and concrete. The applied sheets without additional anchorage always debonded from the surface of the tested specimens. With the help of U-shaped strips applied at the ends of longitudinal sheets, the load bearing capacity and deforming ability of the strengthened beams could be significantly improved. Based on the fracture mechanics model, the effective shear force between these sheets and concrete was determined. According to the brace-arch model and a further parametric study, it was found that the bearing load of a strengthened beam without additional anchorage increased with the concrete strength and that the calculated capacity of a strengthened beam increased with the sectional area of sheets in a more effective rate when U-shaped strips were applied.</description><subject>A. Carbon fibre</subject><subject>Anchorages</subject><subject>Applied sciences</subject><subject>B. Adhesion</subject><subject>B. Strength</subject><subject>Beams (structural)</subject><subject>Bearing capacity</subject><subject>Bonding</subject><subject>Bonding strength</subject><subject>C. Analytical modeling</subject><subject>carbon</subject><subject>Carbon fibers</subject><subject>Composites</subject><subject>concrete</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>Laminates</subject><subject>mechanics</subject><subject>Physicochemistry of polymers</subject><subject>Polymer industry, paints, wood</subject><subject>Reinforced concrete</subject><subject>Strip</subject><subject>Technology of polymers</subject><issn>1359-8368</issn><issn>1879-1069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqNkctu3CAUhq2qkZKmeYbQRaVu7AIGjJfVqDcpUhdN1gjjQ4aRB1wO0zSv0Scuo0mjLrsBdPjOfy5_07xhtGOUqfe7zqX9mjAUwKnjlPGOjh3t1YvmgulhbBlV48v67uXY6l7p8-YV4o5SKmTPL5rfmxRLDtOhhBRJ8uSuxa1dYSZYwyuSkkjZAvEL_DpkuxBnV-tCeTyyS3poKwbxvmxJhhB9yq6muhRdhgJkArtH8heBWP8eQmWdzVMt58OUgTwPQHALUPB1c-btgnD1dF82t58-3m6-tDffPn_dfLhpnRCstEJYL6jQMA_esV4xIfkwcuvdJDV4Dwq0HKxTIzglPJWzElL3bO4Zm-p52bw7ya45_TgAFrMP6GBZbIR0QMM0l1JprVVFxxPqckLM4M2aw97mR8OoOdpgduYfG8zRBkNHU22ouW-fylh0dvHZRhfwWYCrQWneD5W7PnHeJmPvc2XuvlchSSljUlBeic2JgLqUnwGyQRcg1oWHDK6YOYX_6OcP73mxnw</recordid><startdate>20130201</startdate><enddate>20130201</enddate><creator>Li, Xiang</creator><creator>Gu, XiangLin</creator><creator>Song, XiaoBin</creator><creator>Ouyang, Yu</creator><creator>Feng, ZhanLei</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope></search><sort><creationdate>20130201</creationdate><title>Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets</title><author>Li, Xiang ; Gu, XiangLin ; Song, XiaoBin ; Ouyang, Yu ; Feng, ZhanLei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c441t-44af4048ed7fc1361452792afcb58effe6e857ac69ec64f05d645831d311b1d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>A. Carbon fibre</topic><topic>Anchorages</topic><topic>Applied sciences</topic><topic>B. Adhesion</topic><topic>B. Strength</topic><topic>Beams (structural)</topic><topic>Bearing capacity</topic><topic>Bonding</topic><topic>Bonding strength</topic><topic>C. Analytical modeling</topic><topic>carbon</topic><topic>Carbon fibers</topic><topic>Composites</topic><topic>concrete</topic><topic>Exact sciences and technology</topic><topic>Forms of application and semi-finished materials</topic><topic>Laminates</topic><topic>mechanics</topic><topic>Physicochemistry of polymers</topic><topic>Polymer industry, paints, wood</topic><topic>Reinforced concrete</topic><topic>Strip</topic><topic>Technology of polymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Xiang</creatorcontrib><creatorcontrib>Gu, XiangLin</creatorcontrib><creatorcontrib>Song, XiaoBin</creatorcontrib><creatorcontrib>Ouyang, Yu</creatorcontrib><creatorcontrib>Feng, ZhanLei</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Composites. Part B, Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Xiang</au><au>Gu, XiangLin</au><au>Song, XiaoBin</au><au>Ouyang, Yu</au><au>Feng, ZhanLei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets</atitle><jtitle>Composites. Part B, Engineering</jtitle><date>2013-02-01</date><risdate>2013</risdate><volume>45</volume><issue>1</issue><spage>117</spage><epage>126</epage><pages>117-126</pages><issn>1359-8368</issn><eissn>1879-1069</eissn><abstract>This paper presents the results of an experimental study on the flexural behaviour of low-strength reinforced concrete beams strengthened with externally bonded carbon fibre sheets and on the bond behaviour between these sheets and concrete. The applied sheets without additional anchorage always debonded from the surface of the tested specimens. With the help of U-shaped strips applied at the ends of longitudinal sheets, the load bearing capacity and deforming ability of the strengthened beams could be significantly improved. Based on the fracture mechanics model, the effective shear force between these sheets and concrete was determined. According to the brace-arch model and a further parametric study, it was found that the bearing load of a strengthened beam without additional anchorage increased with the concrete strength and that the calculated capacity of a strengthened beam increased with the sectional area of sheets in a more effective rate when U-shaped strips were applied.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.compositesb.2012.09.036</doi><tpages>10</tpages></addata></record> |
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| identifier | ISSN: 1359-8368 |
| ispartof | Composites. Part B, Engineering, 2013-02, Vol.45 (1), p.117-126 |
| issn | 1359-8368 1879-1069 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | A. Carbon fibre Anchorages Applied sciences B. Adhesion B. Strength Beams (structural) Bearing capacity Bonding Bonding strength C. Analytical modeling carbon Carbon fibers Composites concrete Exact sciences and technology Forms of application and semi-finished materials Laminates mechanics Physicochemistry of polymers Polymer industry, paints, wood Reinforced concrete Strip Technology of polymers |
| title | Contribution of U-shaped strips to the flexural capacity of low-strength reinforced concrete beams strengthened with carbon fibre composite sheets |
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