Experimental and analytical study of corroded shear-critical reinforced concrete beams
Identifieur interne : 004167 ( Main/Exploration ); précédent : 004166; suivant : 004168Experimental and analytical study of corroded shear-critical reinforced concrete beams
Auteurs : Inamullah Khan [France] ; Raoul Francois [France] ; Arnaud Castel [Australie]Source :
- Materials and structures [ 1359-5997 ] ; 2014.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Corrosion.
English descriptors
- KwdEn :
Abstract
This paper presents the experimental results of two highly corroded shear-critical deep beams subjected to a chloride environment to assess the shear behavior of long-term-corrosion damaged beams. A 26-year-old reinforced concrete beam corroded by exposure to a chloride environment was cut into two small short-shear-span beams, or deep beams, which were tested under three point bending until failure, along with a control beam of the same age, same length and same cross-section (115 × 28 × 15 cm). Cracking and corrosion maps were drawn for the corroded beams in order to assess the corrosion. Force displacement curves were drawn for the corroded and control beams. After testing the beams until failure, the main steel bars and the stirrups were extracted from the beams and loss of mass was measured and plotted for both longitudinal and transverse reinforcement. It was noted that the loss of mass of transverse and longitudinal reinforcements had not had an important influence on the failure mode and it had not affected the load-bearing capacity of the beam. It was found that the stirrups came into action after the failure of the compression strut and thus decreased the ductility of the corroded beams. Analytical investigations were made to compare the experimental shear capacity with the theoretical value. Strut and tie model predictions were more accurate than the conventional sectional methods provided for in ACI 318-08 and Eurocode 2.
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Constructions), UPS, INSA, Université de Toulouse</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Castel, Arnaud" sort="Castel, Arnaud" uniqKey="Castel A" first="Arnaud" last="Castel">Arnaud Castel</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, The University of New South Wales</s1><s2>Sydney, NSW</s2><s3>AUS</s3><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Sydney, NSW</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0276667</idno><date when="2014">2014</date><idno type="stanalyst">PASCAL 14-0276667 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Université de Toulouse</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Francois, Raoul" sort="Francois, Raoul" uniqKey="Francois R" first="Raoul" last="Francois">Raoul Francois</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>LMDC (Laboratoire Matériaux et Durabilité des Constructions), UPS, INSA, Université de Toulouse</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation></author><author><name sortKey="Castel, Arnaud" sort="Castel, Arnaud" uniqKey="Castel A" first="Arnaud" last="Castel">Arnaud Castel</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, The University of New South Wales</s1><s2>Sydney, NSW</s2><s3>AUS</s3><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Sydney, NSW</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Materials and structures</title><title level="j" type="abbreviated">Mat. struct.</title><idno type="ISSN">1359-5997</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Materials and structures</title><title level="j" type="abbreviated">Mat. struct.</title><idno type="ISSN">1359-5997</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Analytical method</term><term>Concrete construction</term><term>Corrosion</term><term>Cracking</term><term>Deep beam</term><term>Experimental study</term><term>Reinforced concrete</term><term>Shear</term><term>Strut and tie model</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Construction béton</term><term>Béton armé</term><term>Poutre profonde</term><term>Etude expérimentale</term><term>Méthode analytique</term><term>Corrosion</term><term>Cisaillement</term><term>Fissuration</term><term>Modèle de bielles et tirants</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Corrosion</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper presents the experimental results of two highly corroded shear-critical deep beams subjected to a chloride environment to assess the shear behavior of long-term-corrosion damaged beams. A 26-year-old reinforced concrete beam corroded by exposure to a chloride environment was cut into two small short-shear-span beams, or deep beams, which were tested under three point bending until failure, along with a control beam of the same age, same length and same cross-section (115 × 28 × 15 cm). Cracking and corrosion maps were drawn for the corroded beams in order to assess the corrosion. Force displacement curves were drawn for the corroded and control beams. After testing the beams until failure, the main steel bars and the stirrups were extracted from the beams and loss of mass was measured and plotted for both longitudinal and transverse reinforcement. It was noted that the loss of mass of transverse and longitudinal reinforcements had not had an important influence on the failure mode and it had not affected the load-bearing capacity of the beam. It was found that the stirrups came into action after the failure of the compression strut and thus decreased the ductility of the corroded beams. Analytical investigations were made to compare the experimental shear capacity with the theoretical value. Strut and tie model predictions were more accurate than the conventional sectional methods provided for in ACI 318-08 and Eurocode 2.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li></region><settlement><li>Toulouse</li></settlement></list><tree><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Khan, Inamullah" sort="Khan, Inamullah" uniqKey="Khan I" first="Inamullah" last="Khan">Inamullah Khan</name></region><name sortKey="Francois, Raoul" sort="Francois, Raoul" uniqKey="Francois R" first="Raoul" last="Francois">Raoul Francois</name></country><country name="Australie"><noRegion><name sortKey="Castel, Arnaud" sort="Castel, Arnaud" uniqKey="Castel A" first="Arnaud" last="Castel">Arnaud Castel</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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