Bond slip and crack development in FRC and regular concrete specimens longitudinally reinforced with FRP or steel under tension loading

Lárus Helgi Lárusson, Gregor Fischer

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Abstract

The governing mechanism in the structural response of reinforced concrete members in tension is the interaction between structural reinforcement and the surrounding concrete matrix. The composite response and the mechanical integrations of reinforced cementitious members were investigated during tensile loading using high definition image analysis in two unique test setups. Two different types of cementitious materials, conventional concrete and highly ductile Engineered Cementitious Composite (ECC), and two types of reinforcement bars, regular steel and Glass Fiber Reinforcement Polymer (GFRP), were tested. It was found that the ductile ECC in contrast to regular brittle concrete decreases crack widths significantly which effectively results in decreased bond slip between the reinforcement and surrounding matrix. Furthermore the use of elastic GFRP in comparison to elastic/plastic steel reinforcement seems to increase the number of cracks forming over a longer strain interval, especially secondary cracks.
Original languageEnglish
Title of host publicationProceedings of Bond in Concrete 2012 : Bond, Anchorage, Detailing, Fourth International Symposium
Publication date2012
Pages847-854
Publication statusPublished - 2012
EventBond In Concrete 2012: Bond, Anchorage, Detailing - Fourth International Symposium - Brescia, Italy
Duration: 17 Jun 201220 Jun 2012
http://www.bondinconcrete2012.org/

Conference

ConferenceBond In Concrete 2012
Country/TerritoryItaly
City Brescia
Period17/06/201220/06/2012
Internet address

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