Title:
Effect of Filtering on Texture Assessment of Concrete Surfaces
Author(s):
Pedro Miguel Duarte Santos and Eduardo Nuno Brito Santos Julio
Publication:
Materials Journal
Volume:
107
Issue:
1
Appears on pages(s):
31-36
Keywords:
bond; filter; interface; roughness; strength; surface; texture.
DOI:
10.14359/51663462
Date:
1/1/2010
Abstract:
The bond strength of the interface between concrete layers cast at different times is important to ensure the monolithic behavior of reinforced concrete (RC) composite members. The surface roughness of the concrete substrate has a significant influence on the interface strength. The authors developed two methodologies to assess the texture profile of the substrate surface; have proved that numerical parameters can be used to classify its roughness; and showed that some of these correlate well with the interface strength, both in shear and in tension. Because roughness and waviness parameters are obtained from the primary profile using a filter, the selection of the latter has a significant effect on the results. This paper describes a study performed to analyze this effect and to assess if filtering is a necessary step. It was concluded that filtering can be avoided and the surface texture can be characterized only with primary parameters.