Mechanical interaction between concrete and structural reinforcement in the tension stiffening process

Lárus Helgi Lárusson, Gregor Fischer, Jeppe Jönsson

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Abstract

The interaction between structural reinforcement and the surrounding concrete matrix in tension is a governing mechanism in the structural response of reinforced concrete members. The tension stiffening process, defined as the concrete ´s contribution to tensile response of the composite, has been investigated using an image-based deformation measurement and analysis system. This allowed for detailed view of surface deformations and the implications on the resulting response of the member in tension. In this study, conventional concrete and a ductile, strain hardening cement composite, known as Engineered Cementitious Composite (ECC), have been combined with steel and glass fiber reinforced polymer (GFRP) reinforcement to contrast the effects of brittle and ductile cement matrices as well as elastic/plastic and elastic reinforcement on the tension stiffening process. Particular focus was on the deformation process and transverse crack formation in the cementitious matrix at increasing tensile strain.
Original languageEnglish
Title of host publicationHigh Performance Fiber Reinforced Cement Composites 6
PublisherSpringer
Publication date2011
ISBN (Print)978-94-007-2435-8
Publication statusPublished - 2011
Event6th International Workshop on High Performance Fiber Reinforced Cement Composites - Ann Arbor, MI, United States
Duration: 1 Jan 2011 → …
Conference number: 6

Workshop

Workshop6th International Workshop on High Performance Fiber Reinforced Cement Composites
Number6
CountryUnited States
CityAnn Arbor, MI
Period01/01/2011 → …
SeriesRILEM Bookseries
ISSN2211-0844

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