Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages

The importance of surface roughness and its non-destructive examination has often been emphasised in structural rehabilitation. The presented innovative procedure enables the estimation of concrete-to-concrete strength based on a combination of low-cost, area-limited tests and geostatistical methods...

Full description

Bibliographic Details
Main Authors: Janusz Kozubal, Roman Wróblewski, Zbigniew Muszyński, Marek Wyjadłowski, Joanna Stróżyk
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/13/11/2542
_version_ 1797566221153992704
author Janusz Kozubal
Roman Wróblewski
Zbigniew Muszyński
Marek Wyjadłowski
Joanna Stróżyk
author_facet Janusz Kozubal
Roman Wróblewski
Zbigniew Muszyński
Marek Wyjadłowski
Joanna Stróżyk
author_sort Janusz Kozubal
collection DOAJ
description The importance of surface roughness and its non-destructive examination has often been emphasised in structural rehabilitation. The presented innovative procedure enables the estimation of concrete-to-concrete strength based on a combination of low-cost, area-limited tests and geostatistical methods. The new method removes the shortcomings of the existing one, i.e., it is neither qualitative nor subjective. The interface strength factors, cohesion and friction, can be estimated accurately based on the collected data on a surface texture. The data acquisition needed to create digital models of the concrete surface can be performed by terrestrial close-range photogrammetry or other methods. In the presented procedure, limitations to the availability of concrete surfaces are overcome by the generation of subsequential Gaussian random fields (via height profiles) based on the semivariograms fitted to the digital surface models. In this way, the randomness of the surface texture is reproduced. The selected roughness parameters, such as mean valley depth and, most importantly, the geostatistical semivariogram parameter sill, were transformed into contact bond strength parameters based on the available strength tests. The proposed procedure estimates the interface bond strength based on the geostatistical methods applied to the numerical surface model and can be used in practical and theoretical applications.
first_indexed 2024-03-10T19:23:38Z
format Article
id doaj.art-42c90de7b5514da88a65483a4ece1173
institution Directory Open Access Journal
issn 1996-1944
language English
last_indexed 2024-03-10T19:23:38Z
publishDate 2020-06-01
publisher MDPI AG
record_format Article
series Materials
spelling doaj.art-42c90de7b5514da88a65483a4ece11732023-11-20T02:43:07ZengMDPI AGMaterials1996-19442020-06-011311254210.3390/ma13112542Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different AgesJanusz Kozubal0Roman Wróblewski1Zbigniew Muszyński2Marek Wyjadłowski3Joanna Stróżyk4Faculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Geoengineering, Mining and Geology, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandThe importance of surface roughness and its non-destructive examination has often been emphasised in structural rehabilitation. The presented innovative procedure enables the estimation of concrete-to-concrete strength based on a combination of low-cost, area-limited tests and geostatistical methods. The new method removes the shortcomings of the existing one, i.e., it is neither qualitative nor subjective. The interface strength factors, cohesion and friction, can be estimated accurately based on the collected data on a surface texture. The data acquisition needed to create digital models of the concrete surface can be performed by terrestrial close-range photogrammetry or other methods. In the presented procedure, limitations to the availability of concrete surfaces are overcome by the generation of subsequential Gaussian random fields (via height profiles) based on the semivariograms fitted to the digital surface models. In this way, the randomness of the surface texture is reproduced. The selected roughness parameters, such as mean valley depth and, most importantly, the geostatistical semivariogram parameter sill, were transformed into contact bond strength parameters based on the available strength tests. The proposed procedure estimates the interface bond strength based on the geostatistical methods applied to the numerical surface model and can be used in practical and theoretical applications.https://www.mdpi.com/1996-1944/13/11/2542concreteroughnesstextureclose-range photogrammetrybond strengthrandom field generation
spellingShingle Janusz Kozubal
Roman Wróblewski
Zbigniew Muszyński
Marek Wyjadłowski
Joanna Stróżyk
Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
Materials
concrete
roughness
texture
close-range photogrammetry
bond strength
random field generation
title Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
title_full Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
title_fullStr Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
title_full_unstemmed Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
title_short Non-Deterministic Assessment of Surface Roughness as Bond Strength Parameters between Concrete Layers Cast at Different Ages
title_sort non deterministic assessment of surface roughness as bond strength parameters between concrete layers cast at different ages
topic concrete
roughness
texture
close-range photogrammetry
bond strength
random field generation
url https://www.mdpi.com/1996-1944/13/11/2542
work_keys_str_mv AT januszkozubal nondeterministicassessmentofsurfaceroughnessasbondstrengthparametersbetweenconcretelayerscastatdifferentages
AT romanwroblewski nondeterministicassessmentofsurfaceroughnessasbondstrengthparametersbetweenconcretelayerscastatdifferentages
AT zbigniewmuszynski nondeterministicassessmentofsurfaceroughnessasbondstrengthparametersbetweenconcretelayerscastatdifferentages
AT marekwyjadłowski nondeterministicassessmentofsurfaceroughnessasbondstrengthparametersbetweenconcretelayerscastatdifferentages
AT joannastrozyk nondeterministicassessmentofsurfaceroughnessasbondstrengthparametersbetweenconcretelayerscastatdifferentages