Experimental study on concrete spalling in prestressed slabs subjected to fire
Experiments on the fire resistance of 15 prestressed concrete (PC) simply-supported slabs and 9 two-span unbonded PC continuous slabs were conducted. Preliminary conclusions drawn are that concrete spalls more easily or more seriously when the compressive stress is higher or the tensile stress is lo...
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| Veröffentlicht in: | Fire safety journal 2010-08, Vol.45 (5), p.283-297 |
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| creator | Zheng, W.Z. Hou, X.M. Shi, D.S. Xu, M.X. |
| description | Experiments on the fire resistance of 15 prestressed concrete (PC) simply-supported slabs and 9 two-span unbonded PC continuous slabs were conducted. Preliminary conclusions drawn are that concrete spalls more easily or more seriously when the compressive stress is higher or the tensile stress is lower on the surface exposed to fire, and when the strength and water content of concrete at ambient temperature are higher. Based on the test results, an expression for the top envelope surface of the concrete spalling is presented by taking the average standard concrete cube strength at ambient temperature as the
x-axis, the concrete water content at ambient temperature as the
y-axis, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at elevated temperature as the
z-axis. To facilitate design and application, an expression for the top envelope surface of the concrete spalling is presented by keeping the
x-axis and the
y-axis the same, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at ambient temperature as the
z-axis. |
| doi_str_mv | 10.1016/j.firesaf.2010.06.001 |
| format | Article |
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x-axis, the concrete water content at ambient temperature as the
y-axis, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at elevated temperature as the
z-axis. To facilitate design and application, an expression for the top envelope surface of the concrete spalling is presented by keeping the
x-axis and the
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x-axis, the concrete water content at ambient temperature as the
y-axis, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at elevated temperature as the
z-axis. To facilitate design and application, an expression for the top envelope surface of the concrete spalling is presented by keeping the
x-axis and the
y-axis the same, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at ambient temperature as the
z-axis.</description><subject>Applied sciences</subject><subject>Building failures (cracks, physical changes, etc.)</subject><subject>Building structure</subject><subject>Building technical equipments</subject><subject>Buildings</subject><subject>Buildings. Public works</subject><subject>Concrete</subject><subject>Construction (buildings and works)</subject><subject>Durability. Pathology. Repairing. Maintenance</subject><subject>Exact sciences and technology</subject><subject>Fire</subject><subject>Fire behavior of materials and structures</subject><subject>Fire protection</subject><subject>Prestressed slabs</subject><subject>Reinforced concrete structure</subject><subject>Spalling</subject><subject>Stress</subject><subject>Water content</subject><issn>0379-7112</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqFUMtOAzEM3ANIlMcnIOWCOLU42Uc2J4Sq8pAquMA5yroOSrXdXeIton9PqlZcOViWR-MZe7LsWsJMgqzu1jMfIrHzMwUJg2oGIE-yCeTaTLWU6iw7Z14nUAOYSfa6-Bkohg11o2sFj9vVTvSdwL7DSCMJHlzbhu5ThE4MSXhMxbQS3LqGBW-bNeGY5rEXe-PL7NS7lunq2C-yj8fF-_x5unx7epk_LKeYazlOCw_OoDTYAEJe1A1URA4NYo2N85qwbKTKlSuLklThyRinfFNWdaVzg5RfZLcH3SH2X9t0lt0ERmpb11G_ZatrDUWtTZmY5YGJsWeO5O2Q3nVxZyXYfWR2bY-R2X1kFiqb0kl7N0cHx-haH12Hgf-WVQ5aFcok3v2BR-nd70DRMgbqkFZJFEe76sM_Tr9guIgx</recordid><startdate>20100801</startdate><enddate>20100801</enddate><creator>Zheng, W.Z.</creator><creator>Hou, X.M.</creator><creator>Shi, D.S.</creator><creator>Xu, M.X.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T2</scope><scope>7U2</scope><scope>C1K</scope></search><sort><creationdate>20100801</creationdate><title>Experimental study on concrete spalling in prestressed slabs subjected to fire</title><author>Zheng, W.Z. ; Hou, X.M. ; Shi, D.S. ; Xu, M.X.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-4f0a9c19cb0c0348b06eeac9cc8cbaf7ec5b1232a545e24fe99a2fb5686739ce3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Building failures (cracks, physical changes, etc.)</topic><topic>Building structure</topic><topic>Building technical equipments</topic><topic>Buildings</topic><topic>Buildings. Public works</topic><topic>Concrete</topic><topic>Construction (buildings and works)</topic><topic>Durability. Pathology. Repairing. Maintenance</topic><topic>Exact sciences and technology</topic><topic>Fire</topic><topic>Fire behavior of materials and structures</topic><topic>Fire protection</topic><topic>Prestressed slabs</topic><topic>Reinforced concrete structure</topic><topic>Spalling</topic><topic>Stress</topic><topic>Water content</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zheng, W.Z.</creatorcontrib><creatorcontrib>Hou, X.M.</creatorcontrib><creatorcontrib>Shi, D.S.</creatorcontrib><creatorcontrib>Xu, M.X.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Safety Science and Risk</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Fire safety journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zheng, W.Z.</au><au>Hou, X.M.</au><au>Shi, D.S.</au><au>Xu, M.X.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental study on concrete spalling in prestressed slabs subjected to fire</atitle><jtitle>Fire safety journal</jtitle><date>2010-08-01</date><risdate>2010</risdate><volume>45</volume><issue>5</issue><spage>283</spage><epage>297</epage><pages>283-297</pages><issn>0379-7112</issn><coden>FSJODZ</coden><abstract>Experiments on the fire resistance of 15 prestressed concrete (PC) simply-supported slabs and 9 two-span unbonded PC continuous slabs were conducted. Preliminary conclusions drawn are that concrete spalls more easily or more seriously when the compressive stress is higher or the tensile stress is lower on the surface exposed to fire, and when the strength and water content of concrete at ambient temperature are higher. Based on the test results, an expression for the top envelope surface of the concrete spalling is presented by taking the average standard concrete cube strength at ambient temperature as the
x-axis, the concrete water content at ambient temperature as the
y-axis, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at elevated temperature as the
z-axis. To facilitate design and application, an expression for the top envelope surface of the concrete spalling is presented by keeping the
x-axis and the
y-axis the same, and the normal stress level of concrete extreme fiber in the pre-compression zone of a slab at ambient temperature as the
z-axis.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.firesaf.2010.06.001</doi><tpages>15</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Building failures (cracks, physical changes, etc.) Building structure Building technical equipments Buildings Buildings. Public works Concrete Construction (buildings and works) Durability. Pathology. Repairing. Maintenance Exact sciences and technology Fire Fire behavior of materials and structures Fire protection Prestressed slabs Reinforced concrete structure Spalling Stress Water content |
| title | Experimental study on concrete spalling in prestressed slabs subjected to fire |
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