Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory
Today, there are many different repair and strengthening methods that might be used to upgrade a concrete structure. One such method involves CFRP (Carbon Fibre Reinforced Polymer) bonding. This method has proven to be usable for many different types of retrofitting applications. Even so, there are...
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Luleå tekniska universitet, Byggkonstruktion och -produktion
2006
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ftluleatu:oai:DiVA.org:ltu-34482 2023-05-15T17:09:13+02:00 Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory Täljsten, Björn Orosz, Katalin Blanksvärd, Thomas 2006 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34482 eng eng Luleå tekniska universitet, Byggkonstruktion och -produktion International Conference on FRP Composites in Civil Engineering : CICE 2006 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34482 Scopus 2-s2.0-85085861606 Local 8b19f320-be01-11db-9be7-000ea68e967b info:eu-repo/semantics/openAccess Infrastructure Engineering Infrastrukturteknik Conference paper info:eu-repo/semantics/conferenceObject text 2006 ftluleatu 2022-10-25T20:56:27Z Today, there are many different repair and strengthening methods that might be used to upgrade a concrete structure. One such method involves CFRP (Carbon Fibre Reinforced Polymer) bonding. This method has proven to be usable for many different types of retrofitting applications. Even so, there are some disadvantages while using epoxy resins as a bonding agent, i.e. diffusion closeness, thermal compatibility, working environment and the minimum temperature of assemble. It is therefore of interest to replace the epoxy adhesive with a mineral based bonding agent, e.g. polymer modified mortars with similar properties as the base concrete that also is more working environmental friendly. A combination between the polymer modified mortar and fibre reinforced polymers (FRP) can be used for repair and strengthening of civil structures. This paper presents a pilot study of RC beams strengthened in shear with mineral based bonding agents and CFRP grids. The project is a collaboration project among Luleå University of Technology, Norut Teknologi AS and Denmark Technical University and is also a part of the European funded project "Sustainable Bridges". The results so far show that comparable strengthening results as for epoxy bonded systems can be achieved with MBC strengthening systems. The strengthening effect of the beams was 40 - 100 % compared to the unstrengthened reference beam. The theoretical model describes the load carrying capacity fairly well. Godkänd; 2006; 20070207 (ysko) Conference Object Luleå Luleå Luleå Luleå University of Technology Publications (DiVA) |
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Luleå University of Technology Publications (DiVA) |
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English |
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Infrastructure Engineering Infrastrukturteknik |
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Infrastructure Engineering Infrastrukturteknik Täljsten, Björn Orosz, Katalin Blanksvärd, Thomas Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
topic_facet |
Infrastructure Engineering Infrastrukturteknik |
description |
Today, there are many different repair and strengthening methods that might be used to upgrade a concrete structure. One such method involves CFRP (Carbon Fibre Reinforced Polymer) bonding. This method has proven to be usable for many different types of retrofitting applications. Even so, there are some disadvantages while using epoxy resins as a bonding agent, i.e. diffusion closeness, thermal compatibility, working environment and the minimum temperature of assemble. It is therefore of interest to replace the epoxy adhesive with a mineral based bonding agent, e.g. polymer modified mortars with similar properties as the base concrete that also is more working environmental friendly. A combination between the polymer modified mortar and fibre reinforced polymers (FRP) can be used for repair and strengthening of civil structures. This paper presents a pilot study of RC beams strengthened in shear with mineral based bonding agents and CFRP grids. The project is a collaboration project among Luleå University of Technology, Norut Teknologi AS and Denmark Technical University and is also a part of the European funded project "Sustainable Bridges". The results so far show that comparable strengthening results as for epoxy bonded systems can be achieved with MBC strengthening systems. The strengthening effect of the beams was 40 - 100 % compared to the unstrengthened reference beam. The theoretical model describes the load carrying capacity fairly well. Godkänd; 2006; 20070207 (ysko) |
format |
Conference Object |
author |
Täljsten, Björn Orosz, Katalin Blanksvärd, Thomas |
author_facet |
Täljsten, Björn Orosz, Katalin Blanksvärd, Thomas |
author_sort |
Täljsten, Björn |
title |
Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
title_short |
Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
title_full |
Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
title_fullStr |
Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
title_full_unstemmed |
Strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
title_sort |
strengthening of concrete beams in shear with mineral based composites : laboratory tests and theory |
publisher |
Luleå tekniska universitet, Byggkonstruktion och -produktion |
publishDate |
2006 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34482 |
genre |
Luleå Luleå Luleå |
genre_facet |
Luleå Luleå Luleå |
op_relation |
International Conference on FRP Composites in Civil Engineering : CICE 2006 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34482 Scopus 2-s2.0-85085861606 Local 8b19f320-be01-11db-9be7-000ea68e967b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766065187354312704 |