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| Title: | Concrete substrate preparation and characterization prior to adhesion of externally bonded reinforcement |
| Author (s): | Matana, M. Galecki, Grzegorz Maerz, Norbert Nanni, Antonio |
| Department/Lab Affiliations: | Geological Sciences & Engineering Mining & Nuclear Engineering University Transportation Center |
| Keywords: | Bond strength concrete surface profiles (CSP) laser profilometer pull-off test steel reinforced grout (SRG) steel reinforced polymer (SRP) surface roughness |
| Issue Date: | 2005 |
| Publisher: | International Institute for FRC in Construction |
| Citation: | Matana, M., Galecki, Grzegorz, Maerz, Norbert, and Nanni, Antonio. "Concrete Substrate Preparation and Characterization Prior to Adhesion of Externally Bonded Reinforcement." Proceedings of the International Symposium on Bond Behaviour of FRP in Structures, 2005. |
| Abstract: | The bond between externally bonded FRP reinforcement and concrete substrate is highly dependent on the quality of the surface preparation. Accordingly, accurate measurement of surface roughness could lead to the more reliable and predictable bond behavior. This paper presents the results of an experimental study aimed at investigating the effect of surface preparation on bond performance of externally applied reinforcement other than FRP. Water jetting was used as the abrading method. The quantitative assessment of surface roughness was conducted using a newly-developed laser profilometer. Samples of externally applied steel reinforced polymer (SRP) and steel reinforced grout (SRG) reinforcement were pull-off tested. Comparison to the state-of-the-art surface characterization method using plastic concrete surface profiles was undertaken, yielding a relationship between the roughness of the concrete surfaces and the roughness of the plastic models. Experimental results of this project showed that the effect of the surface roughness on the pull-off strength of the externally applied SRP and SRG reinforcement was not a key factor. This was because in the first instance failure always occurred in the concrete substrate, while in the latter it occurred in the gout layer. |
| Type: | Article - Conference proceedings text |
| In Title: | Proceedings of the International Symposium on Bond Behaviour of FRP in Structures |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Policy Unknown FULL COPYRIGHT INFORMATION: |
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| title | Concrete substrate preparation and characterization prior to adhesion of externally bonded reinforcement |
| contributor.author | Matana, M. |
| contributor.author | Galecki, Grzegorz |
| contributor.author | Maerz, Norbert |
| contributor.author | Nanni, Antonio |
| contributor.deptlab | Geological Sciences & Engineering |
| contributor.deptlab | Mining & Nuclear Engineering |
| contributor.deptlab | University Transportation Center |
| contributor.sponsor | Hardwire LLC |
| contributor.sponsor | National Science Foundation |
| subject | Bond strength |
| subject | concrete surface profiles (CSP) |
| subject | laser profilometer |
| subject | pull-off test |
| subject | steel reinforced grout (SRG) |
| subject | steel reinforced polymer (SRP) |
| subject | surface roughness |
| date.issued | 2005 |
| publisher | International Institute for FRC in Construction |
| identifier.citation | Matana, M., Galecki, Grzegorz, Maerz, Norbert, and Nanni, Antonio. "Concrete Substrate Preparation and Characterization Prior to Adhesion of Externally Bonded Reinforcement." Proceedings of the International Symposium on Bond Behaviour of FRP in Structures, 2005. |
| identifier.pub.URI | |
| description.abstract | The bond between externally bonded FRP reinforcement and concrete substrate is highly dependent on the quality of the surface preparation. Accordingly, accurate measurement of surface roughness could lead to the more reliable and predictable bond behavior. This paper presents the results of an experimental study aimed at investigating the effect of surface preparation on bond performance of externally applied reinforcement other than FRP. Water jetting was used as the abrading method. The quantitative assessment of surface roughness was conducted using a newly-developed laser profilometer. Samples of externally applied steel reinforced polymer (SRP) and steel reinforced grout (SRG) reinforcement were pull-off tested. Comparison to the state-of-the-art surface characterization method using plastic concrete surface profiles was undertaken, yielding a relationship between the roughness of the concrete surfaces and the roughness of the plastic models. Experimental results of this project showed that the effect of the surface roughness on the pull-off strength of the externally applied SRP and SRG reinforcement was not a key factor. This was because in the first instance failure always occurred in the concrete substrate, while in the latter it occurred in the gout layer. |
| type | Article - Conference proceedings |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Policy Unknown |
| rights.URI | |
| relation.isPartOf | Proceedings of the International Symposium on Bond Behaviour of FRP in Structures |
| date.available | 2008-08-05T14:48:19Z |
| identifier.persist.URI |