A state-of-the-art review on roughness quantification methods for concrete surfaces

Santos, Pedro; Júlio, Eduardo

doi:10.1016/j.conbuildmat.2012.09.045

Cited by 189 publications

(101 citation statements)

References 20 publications

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“…Microscopy --Geodesy -----CCTV ---Impulse response ----Impact echo ---Parallel seismic ---Ultrasonic --Ultrasonic tomography ---Acoustic emission ----Radiographic techniques ---Computer tomography ---Electromagnetic induction -----Radar techniques ---Laser static techniques -----Laser dynamic techniques -----Sclerometric static techniques ----Sclerometric dynamic techniques ----Thermographic passive techniques ----Thermographic active techniques ----Static proof loads -----Dynamic proof In recent years rapid advances in non-destructive 3D optical methods have been made. Using such methods one can obtain a 3D image of the surface of concrete [6][7][8][9][10]. Analysing the image by means of dedicated computer programs one can generate, e.g., the values of 3D roughness parameters in accordance with ISO 25178 [11].…”

Section: Optical Methodsmentioning

confidence: 99%

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Hoła¹,

Bień²,

Sadowski³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. This paper proposes a comprehensive classification of test methods for the diagnosis of concrete structures. The main focus is on the ranges of suitability of the particular methods and techniques for assessing the durability of structures, depending on the principal degradation mechanisms and their effects on this durability. The survey covers non-destructive testing (NDT) methods, which do not in any way breach the integrity of the tested structures, and semi-destructive testing (SDT) methods requiring material samples to be taken or any other minor breach of structural integrity. An original taxonomy of physical, chemical and biological diagnostic methods, useful in assessment of concrete structures durability, is proposed. Equipment specific for selected advanced testing methods is presented as well as exemplary test results.

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Section: Optical Methodsmentioning

confidence: 99%

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Hoła¹,

Bień²,

Sadowski³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…The same software was used for constructing the 3-D analyses of the captured images. The analyses results were then used to explain the utilization of the CFRP strips [10,11]. Some researchers refered to the importance of the nature of the CFRP strip-adhesive bond and described the bond as an effective factor in both of decreasing and/or increasing the overall strength and durability of strengthening systems [12,13].…”

Section: Three-dimensional Laser Profilometery Analysesmentioning

confidence: 99%

Assessing the Contribution of the CFRP Strip of Bearing the Applied Load Using Near-Surface Mounted Strengthening Technique with Innovative High-Strength Self-Compacting Cementitious Adhesive (IHSSC-CA)

2018

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Efficient transfer of load between concrete substrate and fibre reinforced polymer (FRP) by the bonding agent is the key factor in any FRP strengthening system. An innovative high-strength self-compacting non-polymer cementitious adhesive (IHSSC-CA) was recently developed by the authors and has been used in a number of studies. Graphene oxide and cementitious materials are used to synthesise the new adhesive. The successful implementation of IHSSC-CA significantly increases carbon FRP (CFRP) strip utilization and the load-bearing capacity of the near-surface mounted (NSM) CFRP strengthening system. A number of tests were used to inspect the interfacial zone in the bonding area of NSM CFRP strips, including physical examination, pore structure analysis, and three-dimensional laser profilometery analysis. It was deduced from the physical inspection of NSM CFRP specimens made with IHSSC-CA that a smooth surface for load transfer was found in the CFRP strip without stress concentrations in some local regions. A smooth surface of the adhesive layer is very important for preventing localized brittle failure in the concrete. The pore structure analysis also confirmed that IHSSC-CA has better composite action between NSM CFRP strips and concrete substrate than other adhesives, resulting in the NSM CFRP specimens made with IHSSC-CA sustaining a greater load. Finally, the results of three-dimensional laser profilometery revealed a greater degree of roughness and less deformation on the surface of the CFRP strip when IHSSC-CA was used compared to other adhesives.

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“…For this purpose, results of a previous investigation on strengthened beams with RC layers were used [7], where roughening of concrete interface was made using an air chipping hammer, and an average roughness of 2-3 mm was achieved. There are published recommended methods to characterise and quantify concrete surface texture [49,50]. In this study [7], Sand Patch Test was used.…”

Section: Numerical Modelling Of Strengthened Beams With Uhpfrcmentioning

confidence: 99%

Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

Λαμπρόπουλος

Paschalis

Τσιούλου

et al. 2016

Engineering Structures

255

142

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In this study the efficiency of the use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) for the strengthening of existing Reinforced Concrete (RC) beams has been investigated. Experimental work has been conducted to determine UHPFRC material properties. Dog-bone shaped specimens have been tested under direct tensile loading, and standard cubes have been tested in compression. These results have been used for the development of a numerical model using Finite Element Method. The reliability of the numerical model has been validated using further experimental results of UHPFRC layers tested under flexural loading. Further numerical study has been conducted on full-scale beams strengthened with UHPFRC layers and jackets, and these results were compared to respective results of beams strengthened with conventional RC layers and with combination of UHPFRC and steel reinforcing bars. Superior performance was observed for strengthened beams with UHPFRC three side jackets, and the efficiency of this technique was highlighted by comparisons with other strengthening techniques.

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A state-of-the-art review on roughness quantification methods for concrete surfaces

Cited by 189 publications

References 20 publications

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Assessing the Contribution of the CFRP Strip of Bearing the Applied Load Using Near-Surface Mounted Strengthening Technique with Innovative High-Strength Self-Compacting Cementitious Adhesive (IHSSC-CA)

Strengthening of reinforced concrete beams using ultra high performance fibre reinforced concrete (UHPFRC)

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