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Using mineral based composites for shear strengthening concrete members
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-5154-7044
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0001-7799-5809
2012 (English)In: Concrete solutions: proceedings of Concrete solutions, 4th International Conference on Concrete Repair, Dresden, Germany, 26 - 28 September 2011 / [ed] Michael Grantham; Viktor Mechtcherine, Boca Raton, Fla.: CRC Press/Balkema , 2012, p. 623-629Conference paper, Published paper (Refereed)
Abstract [en]

During the last two decades, strengthening concrete structures with epoxy bonded carbon fiber reinforced polymers (CFRP) has shown excellent results in increasing bearing capacity. However, there are some limitations with epoxy coated concrete surfaces, e.g., low permeability which may provoke freeze/thaw problems, poor thermal compatibility to the concrete substrate which makes epoxy coating more sensitive to the surrounding temperature and regulations when it comes to the security and health (allergic reactions) of applicators and third party users. In this respect, using mineral based composites (MBC) may overcome some of these challenges associated with epoxy bonded strengthening systems. MBC, in this context, refers to high strength fibers bonded to the surface using a mineral based bonding agent. This study examines the cracking behavior and strain development of shear MBC strengthened RC beams. The results show that using MBC as shear strengthening postpones the formation of macro-cracks and that a considerable strengthening effect is achieved by using MBC

Place, publisher, year, edition, pages
Boca Raton, Fla.: CRC Press/Balkema , 2012. p. 623-629
National Category
Infrastructure Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-32459Local ID: 6f65b498-282d-421f-9212-89da90cca1f8ISBN: 978-0-415-61622-5 (print)OAI: oai:DiVA.org:ltu-32459DiVA, id: diva2:1005693
Conference
International Conference on Concrete Repair : 26/09/2011 - 28/09/2011
Note
Godkänd; 2012; 20120229 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-03-20Bibliographically approved

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Blanksvärd, ThomasTäljsten, Björn

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