Role Of Porosity On Durability Of Carbon Fiber-Reinforced Polymer-Concrete Bond
This paper investigates the influence of concrete porosity on durability of the bond between fiber-reinforced polymer (FRP) and concrete. Twenty-four slab specimens were cast using three different concrete mixtures with water-cementitious materials ratios (w/cm) of 0.53, 0.41, and 0.21, representing...
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| Veröffentlicht in: | ACI structural journal 2019-11, Vol.116 (6), p.75-86 |
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| creator | Al Azzawi, Mostfa Mullins, Gray Sen, Rajan |
| description | This paper investigates the influence of concrete porosity on durability of the bond between fiber-reinforced polymer (FRP) and concrete. Twenty-four slab specimens were cast using three different concrete mixtures with water-cementitious materials ratios (w/cm) of 0.53, 0.41, and 0.21, representing high, medium, and low porosities, respectiviely. The slabs were preconditioned by oven-drying and two commercially used carbon fiber-reinforced polymer (CFRP) materials bonded to surfaces that had been sand-blasted to provide a concrete surface profile (CSP) 3 rating. Repaired specimens were submerged in 30[degrees]C (86[degrees]F) potable water for 15 weeks and residual bond was evaluated through pulloff tests. Results showed 1 to 3% bond reduction in the high-porosity, low-strength concrete compared to a reduction in excess of 20% in its low-porosity, higher-strength counterpart. The likely reason for the better performance was deeper epoxy penetration into the more porous concrete substrate. Findings suggest that surface preparation and installation methods that allow epoxy to penetrate deeper into low-porosity, high-strength concrete can result in increased durability under moisture exposure. Keywords: bond; carbon fiber-reinforced polymer; composite section; durability; exposure; pulloff; water. |
| doi_str_mv | 10.14359/51716801 |
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Twenty-four slab specimens were cast using three different concrete mixtures with water-cementitious materials ratios (w/cm) of 0.53, 0.41, and 0.21, representing high, medium, and low porosities, respectiviely. The slabs were preconditioned by oven-drying and two commercially used carbon fiber-reinforced polymer (CFRP) materials bonded to surfaces that had been sand-blasted to provide a concrete surface profile (CSP) 3 rating. Repaired specimens were submerged in 30[degrees]C (86[degrees]F) potable water for 15 weeks and residual bond was evaluated through pulloff tests. Results showed 1 to 3% bond reduction in the high-porosity, low-strength concrete compared to a reduction in excess of 20% in its low-porosity, higher-strength counterpart. The likely reason for the better performance was deeper epoxy penetration into the more porous concrete substrate. Findings suggest that surface preparation and installation methods that allow epoxy to penetrate deeper into low-porosity, high-strength concrete can result in increased durability under moisture exposure. Keywords: bond; carbon fiber-reinforced polymer; composite section; durability; exposure; pulloff; water.</description><identifier>ISSN: 0889-3241</identifier><identifier>EISSN: 1944-7361</identifier><identifier>DOI: 10.14359/51716801</identifier><language>eng</language><publisher>Farmington Hills: American Concrete Institute</publisher><subject>Bond strength ; Bonds (Securities) ; Carbon fiber reinforced concretes ; Carbon fiber reinforced plastics ; Carbon fiber reinforcement ; Cement ; Concrete ; Concrete mixes ; Concrete slabs ; Concretes ; Drinking water ; Drying ovens ; Durability ; Epoxy resins ; Fiber reinforced polymers ; High strength concretes ; Hydration ; Polymer industry ; Polymers ; Porosity ; Reduction ; Slabs ; Studies ; Substrates ; Surface preparation</subject><ispartof>ACI structural journal, 2019-11, Vol.116 (6), p.75-86</ispartof><rights>COPYRIGHT 2019 American Concrete Institute</rights><rights>Copyright American Concrete Institute Nov 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c296t-584def54da5b3db094fe47e6f4106950cfb50377441f8a119eb8fa9f28dc8f2a3</citedby><cites>FETCH-LOGICAL-c296t-584def54da5b3db094fe47e6f4106950cfb50377441f8a119eb8fa9f28dc8f2a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Al Azzawi, Mostfa</creatorcontrib><creatorcontrib>Mullins, Gray</creatorcontrib><creatorcontrib>Sen, Rajan</creatorcontrib><title>Role Of Porosity On Durability Of Carbon Fiber-Reinforced Polymer-Concrete Bond</title><title>ACI structural journal</title><description>This paper investigates the influence of concrete porosity on durability of the bond between fiber-reinforced polymer (FRP) and concrete. Twenty-four slab specimens were cast using three different concrete mixtures with water-cementitious materials ratios (w/cm) of 0.53, 0.41, and 0.21, representing high, medium, and low porosities, respectiviely. The slabs were preconditioned by oven-drying and two commercially used carbon fiber-reinforced polymer (CFRP) materials bonded to surfaces that had been sand-blasted to provide a concrete surface profile (CSP) 3 rating. Repaired specimens were submerged in 30[degrees]C (86[degrees]F) potable water for 15 weeks and residual bond was evaluated through pulloff tests. Results showed 1 to 3% bond reduction in the high-porosity, low-strength concrete compared to a reduction in excess of 20% in its low-porosity, higher-strength counterpart. The likely reason for the better performance was deeper epoxy penetration into the more porous concrete substrate. Findings suggest that surface preparation and installation methods that allow epoxy to penetrate deeper into low-porosity, high-strength concrete can result in increased durability under moisture exposure. Keywords: bond; carbon fiber-reinforced polymer; composite section; durability; exposure; pulloff; water.</description><subject>Bond strength</subject><subject>Bonds (Securities)</subject><subject>Carbon fiber reinforced concretes</subject><subject>Carbon fiber reinforced plastics</subject><subject>Carbon fiber reinforcement</subject><subject>Cement</subject><subject>Concrete</subject><subject>Concrete mixes</subject><subject>Concrete slabs</subject><subject>Concretes</subject><subject>Drinking water</subject><subject>Drying ovens</subject><subject>Durability</subject><subject>Epoxy resins</subject><subject>Fiber reinforced polymers</subject><subject>High strength concretes</subject><subject>Hydration</subject><subject>Polymer industry</subject><subject>Polymers</subject><subject>Porosity</subject><subject>Reduction</subject><subject>Slabs</subject><subject>Studies</subject><subject>Substrates</subject><subject>Surface preparation</subject><issn>0889-3241</issn><issn>1944-7361</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNo1kE1PwzAMhiMEEqNw4B9U4sShI27cNjmOwgBpUtEE5ypNHdSpa0baHfbvCRvIB8uv_PjjZewW-BxQZOohgwJyyeGMzUAhJoXI4ZzNuJQqESnCJbsaxw3ngqcCZ6xau57iysbvzruxmw5xNcRPe6-brj9WNi61b9wQL7uGfLKmbrDOG2oD0R-2QSrdYDxNFD-6ob1mF1b3I9385Yh9Lp8_ytdkVb28lYtVYlKVT0kmsSWbYauzRrQNV2gJC8otAs9Vxo1tMi6KAhGs1ACKGmm1sqlsjbSpFhG7O83defe9p3GqN27vh7CyTgUUHBDDjxGbn7q-dE_17-WT1yZES9vOuIFsF_RFDlwiYi4CcH8CTHBj9GTrne-22h9q4PXR4PrfYPED_J1rTA</recordid><startdate>20191101</startdate><enddate>20191101</enddate><creator>Al Azzawi, Mostfa</creator><creator>Mullins, Gray</creator><creator>Sen, Rajan</creator><general>American Concrete Institute</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7QQ</scope><scope>7SR</scope><scope>7XB</scope><scope>88I</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KR7</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope></search><sort><creationdate>20191101</creationdate><title>Role Of Porosity On Durability Of Carbon Fiber-Reinforced Polymer-Concrete Bond</title><author>Al Azzawi, Mostfa ; Mullins, Gray ; Sen, Rajan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c296t-584def54da5b3db094fe47e6f4106950cfb50377441f8a119eb8fa9f28dc8f2a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Bond strength</topic><topic>Bonds (Securities)</topic><topic>Carbon fiber reinforced concretes</topic><topic>Carbon fiber reinforced plastics</topic><topic>Carbon fiber reinforcement</topic><topic>Cement</topic><topic>Concrete</topic><topic>Concrete mixes</topic><topic>Concrete slabs</topic><topic>Concretes</topic><topic>Drinking water</topic><topic>Drying ovens</topic><topic>Durability</topic><topic>Epoxy resins</topic><topic>Fiber reinforced polymers</topic><topic>High strength concretes</topic><topic>Hydration</topic><topic>Polymer industry</topic><topic>Polymers</topic><topic>Porosity</topic><topic>Reduction</topic><topic>Slabs</topic><topic>Studies</topic><topic>Substrates</topic><topic>Surface preparation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Al Azzawi, Mostfa</creatorcontrib><creatorcontrib>Mullins, Gray</creatorcontrib><creatorcontrib>Sen, Rajan</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Research Library</collection><collection>Science Database</collection><collection>ProQuest Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering collection</collection><collection>ProQuest Central Basic</collection><jtitle>ACI structural journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Al Azzawi, Mostfa</au><au>Mullins, Gray</au><au>Sen, Rajan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Role Of Porosity On Durability Of Carbon Fiber-Reinforced Polymer-Concrete Bond</atitle><jtitle>ACI structural journal</jtitle><date>2019-11-01</date><risdate>2019</risdate><volume>116</volume><issue>6</issue><spage>75</spage><epage>86</epage><pages>75-86</pages><issn>0889-3241</issn><eissn>1944-7361</eissn><abstract>This paper investigates the influence of concrete porosity on durability of the bond between fiber-reinforced polymer (FRP) and concrete. Twenty-four slab specimens were cast using three different concrete mixtures with water-cementitious materials ratios (w/cm) of 0.53, 0.41, and 0.21, representing high, medium, and low porosities, respectiviely. The slabs were preconditioned by oven-drying and two commercially used carbon fiber-reinforced polymer (CFRP) materials bonded to surfaces that had been sand-blasted to provide a concrete surface profile (CSP) 3 rating. Repaired specimens were submerged in 30[degrees]C (86[degrees]F) potable water for 15 weeks and residual bond was evaluated through pulloff tests. Results showed 1 to 3% bond reduction in the high-porosity, low-strength concrete compared to a reduction in excess of 20% in its low-porosity, higher-strength counterpart. The likely reason for the better performance was deeper epoxy penetration into the more porous concrete substrate. Findings suggest that surface preparation and installation methods that allow epoxy to penetrate deeper into low-porosity, high-strength concrete can result in increased durability under moisture exposure. Keywords: bond; carbon fiber-reinforced polymer; composite section; durability; exposure; pulloff; water.</abstract><cop>Farmington Hills</cop><pub>American Concrete Institute</pub><doi>10.14359/51716801</doi><tpages>12</tpages></addata></record> |
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| source | American Concrete Institute Online Journal Archives |
| subjects | Bond strength Bonds (Securities) Carbon fiber reinforced concretes Carbon fiber reinforced plastics Carbon fiber reinforcement Cement Concrete Concrete mixes Concrete slabs Concretes Drinking water Drying ovens Durability Epoxy resins Fiber reinforced polymers High strength concretes Hydration Polymer industry Polymers Porosity Reduction Slabs Studies Substrates Surface preparation |
| title | Role Of Porosity On Durability Of Carbon Fiber-Reinforced Polymer-Concrete Bond |
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