Experimental Investigations on Upgrading Structures with High Strength Concrete Overlay
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Bibliographic Details
| Author(s): |
Norbert Randl
Csaba Simon |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013 | ||||
| Published in: | IABSE Conference, Rotterdam, May 2013 | ||||
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| Page(s): | 580-581 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2013 | ||||
| DOI: | 10.2749/222137813806548343 | ||||
| Abstract: |
In the frame of the research project “HiPerComp” funded by the Austrian Research Foundation (FFG) several tests were performed in order to investigate the bond properties between normal concrete substrates (about C50/60) and high strength concrete (HSC) overlays with a 28 days compressive cube strength of about 120 MPa. Slant shear tests with different joint angles and bending tests with reinforced concrete slabs were carried out. The substrates were treated with high pressure water jetting and sand blasting to increase the surface roughness. The usage of HSC overlays leads to a more durable and compact top layer due to its decreased porosity and its resistance is higher against mechanical abrasion, while the bond properties are better compared to normal concrete overlays. |
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| Keywords: |
concrete overlay high strength concrete slant shear test structural upgrading high pressure water jetting sand blasting
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