Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/3982
Title: | Concrete-to-concrete bond strength. Influence of the roughness of the substrate surface | Authors: | Júlio, Eduardo N. B. S. Branco, Fernando A. B. Silva, Vítor D. |
Keywords: | Concrete; Roughness; Strength | Issue Date: | 2004 | Citation: | Construction and Building Materials. 18:9 (2004) 675-681 | Abstract: | An experimental study was performed to evaluate the bond strength between two concrete layers, for different techniques for increasing the roughness of the substrate surface. In a total of 25 slant shear specimens and 25 pull-off specimens the substrate surface was prepared by wire-brushing; sand-blasting; chipping with a light jackhammer; or were left as-cast against steel formwork. Three months later, the new concrete was added. Pull-off tests were performed to evaluate the bond strength in tension. Slant shear tests were conducted to quantify the bond strength in shear. Analysis of results indicated that: the highest value of bond strength was achieved with sand-blasting; pull-off tests are adequate to estimate the bond strength in situ; and pre-wetting the substrate surface does not seem to influence the bond strength. | URI: | https://hdl.handle.net/10316/3982 | DOI: | 10.1016/j.conbuildmat.2004.04.023 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Civil - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
filec52d9cc690ec4977ad2b656895fb9e5c.pdf | 477.67 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.