Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP
•1st time corner slab-column connections strengthened via CFRP have been studied.•Slabs with and without near-column openings are included.•An experimental programme on 4 flat slabs is conducted.•FEM used to identify optimal strengthening arrangements.•Optimal strengthening layouts give modest incre...
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| Veröffentlicht in: | Construction & building materials 2017-05, Vol.139, p.132-147 |
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| creator | Abdulrahman, Bassam Q. Wu, Zhangjian Cunningham, Lee S. |
| description | •1st time corner slab-column connections strengthened via CFRP have been studied.•Slabs with and without near-column openings are included.•An experimental programme on 4 flat slabs is conducted.•FEM used to identify optimal strengthening arrangements.•Optimal strengthening layouts give modest increases in slab ultimate strength.
This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11%, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23%. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs. |
| doi_str_mv | 10.1016/j.conbuildmat.2017.02.056 |
| format | Article |
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This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11%, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23%. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.</description><identifier>ISSN: 0950-0618</identifier><identifier>EISSN: 1879-0526</identifier><identifier>DOI: 10.1016/j.conbuildmat.2017.02.056</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Carbon fibers ; CFRP ; Concrete slabs ; Corner columns ; Mechanical properties ; Punching shear ; Strengthening</subject><ispartof>Construction & building materials, 2017-05, Vol.139, p.132-147</ispartof><rights>2017 Elsevier Ltd</rights><rights>COPYRIGHT 2017 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c514t-a773609831c78a7f41660afb4154cd4ec1f75efe5ebc3c8175316da6dc52b6073</citedby><cites>FETCH-LOGICAL-c514t-a773609831c78a7f41660afb4154cd4ec1f75efe5ebc3c8175316da6dc52b6073</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0950061817302386$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Abdulrahman, Bassam Q.</creatorcontrib><creatorcontrib>Wu, Zhangjian</creatorcontrib><creatorcontrib>Cunningham, Lee S.</creatorcontrib><title>Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP</title><title>Construction & building materials</title><description>•1st time corner slab-column connections strengthened via CFRP have been studied.•Slabs with and without near-column openings are included.•An experimental programme on 4 flat slabs is conducted.•FEM used to identify optimal strengthening arrangements.•Optimal strengthening layouts give modest increases in slab ultimate strength.
This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11%, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23%. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.</description><subject>Carbon fibers</subject><subject>CFRP</subject><subject>Concrete slabs</subject><subject>Corner columns</subject><subject>Mechanical properties</subject><subject>Punching shear</subject><subject>Strengthening</subject><issn>0950-0618</issn><issn>1879-0526</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>N95</sourceid><recordid>eNqNkV1rFDEUhoMouFb_Q8RbZ0xmJsnMZVnaKhQU0euQSU5ms2SSkmRq--9NWS9a2As5cL543gPJi9BHSlpKKP9ybHUM8-a8WVVpO0JFS7qWMP4K7egopoawjr9GOzIx0hBOx7foXc5HQgjveLdD5erhDpJbIRTlsQoGh22tC10nF-4hF7eo4mKoU4k4lwRhKQcILizYelVw9mrOuDY6pgCpFr-tIeM_rhwwPBRIQXn_iOcYDBi8v_754z16Y5XP8OFfvUC_r69-7b82t99vvu0vbxvN6FAaJUTPyTT2VItRCTtQzomy80DZoM0AmlrBwAKDWfd6pIL1lBvFjWbdzInoL9Cn091FeZAu2FiS0qvLWl4OUy-mfuxopZoz1AL1McrHANbV9Qu-PcPXMLA6fVbw-Zlg3rILkGvKbjmUvKgt55f4dMJ1ijknsPKuGqTSo6REPpkuj_KZ6fLJdEk6WU2v2v1JC_Vb7x0kmbWDoMG4BLpIE91_XPkLQAm8yQ</recordid><startdate>20170515</startdate><enddate>20170515</enddate><creator>Abdulrahman, Bassam Q.</creator><creator>Wu, Zhangjian</creator><creator>Cunningham, Lee S.</creator><general>Elsevier Ltd</general><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>N95</scope><scope>XI7</scope></search><sort><creationdate>20170515</creationdate><title>Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP</title><author>Abdulrahman, Bassam Q. ; Wu, Zhangjian ; Cunningham, Lee S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c514t-a773609831c78a7f41660afb4154cd4ec1f75efe5ebc3c8175316da6dc52b6073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Carbon fibers</topic><topic>CFRP</topic><topic>Concrete slabs</topic><topic>Corner columns</topic><topic>Mechanical properties</topic><topic>Punching shear</topic><topic>Strengthening</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Abdulrahman, Bassam Q.</creatorcontrib><creatorcontrib>Wu, Zhangjian</creatorcontrib><creatorcontrib>Cunningham, Lee S.</creatorcontrib><collection>CrossRef</collection><collection>Gale Business: Insights</collection><collection>Business Insights: Essentials</collection><jtitle>Construction & building materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Abdulrahman, Bassam Q.</au><au>Wu, Zhangjian</au><au>Cunningham, Lee S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP</atitle><jtitle>Construction & building materials</jtitle><date>2017-05-15</date><risdate>2017</risdate><volume>139</volume><spage>132</spage><epage>147</epage><pages>132-147</pages><issn>0950-0618</issn><eissn>1879-0526</eissn><abstract>•1st time corner slab-column connections strengthened via CFRP have been studied.•Slabs with and without near-column openings are included.•An experimental programme on 4 flat slabs is conducted.•FEM used to identify optimal strengthening arrangements.•Optimal strengthening layouts give modest increases in slab ultimate strength.
This research investigates the effectiveness of strengthening flat slab to column corner connections by using carbon fibre reinforced polymer (CFRP) sheets. Towards this, four full scale un-strengthened and strengthened flat slab specimens were studied experimentally. Further variation in the test series was introduced via addition of openings near the slab column intersections. The structural performance of the strengthened specimens was compared with that of the un-strengthened specimen in terms of ultimate punching shear resistance, deflection profile and strain profile etc. From the series of slabs tested, it can be concluded that strengthening in the slab without the opening increased the ultimate punching shear capacity by 11%, while in the case of the slab with openings, strengthening increased the punching shear capacity by up to 23%. In parallel with the experimental work, a numerical study was also conducted in order to gain further insight into the structural behaviour of the slabs.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.conbuildmat.2017.02.056</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Construction & building materials, 2017-05, Vol.139, p.132-147 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Carbon fibers CFRP Concrete slabs Corner columns Mechanical properties Punching shear Strengthening |
| title | Experimental and numerical investigation into strengthening flat slabs at corner columns with externally bonded CFRP |
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