Mean grain size determination in marbles by ultrasonic velocity techniques

Sarpün, İ̇smail Hakkı; Kılıçkaya, M. Selami; Tuncel, Sabri

doi:10.1016/j.ndteint.2004.06.009

Cited by 23 publications

(8 citation statements)

References 9 publications

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“…V p value is closely related to the physical properties of the material, such as density, elasticity, porosity, and water content. The propagation velocity also depends on the state of conservation of the stone and on the presence of concealed inhomogeneity and detachments, both superficial and internal [27][28][29][30][31].…”

Section: Ndt Techniques Applicationmentioning

confidence: 99%

Monitoring and Evaluation of Sandstone Decay Adopting Non-Destructive Techniques: On-Site Application on Building Stones

et al. 2020

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This paper focuses on the characterization approach to evaluate the decay state of Pietra Serena of historic buildings in Florence (Italy). Pietra Serena is a Florentine sandstone largely used in the city especially during the Renaissance; it is a symbol of cultural heritage of Florence and constitutes a large part of the city center, which was named a World Heritage Site by UNESCO in 1982. Unfortunately, many environmental factors negatively affect the stone, increasing damage and the danger of falling material. Any detachment of stone fragments, in addition to constitute a loss in cultural heritage, can be dangerous for citizens and the many tourists that visit the city. The use of non-destructive techniques (NDTs) as ultrasonic and Schmidt hammer tests can quantitatively define some mechanical properties and help to monitor the decay degree of building stone. In this study, the NDTs were combined with mineralogical, petrographical, chemical and physical analyses to investigate the stone materials, in order to correlate their features with the characteristics of the different artefacts in Pietra Serena. Correlations between the NDTs results and the compositional characteristics of the on-site stone were carried out; such discussion allows to identify zones of weakness and dangerous unstable elements.

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Section: Ndt Techniques Applicationmentioning

confidence: 99%

Monitoring and Evaluation of Sandstone Decay Adopting Non-Destructive Techniques: On-Site Application on Building Stones

et al. 2020

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“…However, this method is destructive to the structure. For Non-Destructive Evaluation (NDE) of concrete and stone structures [25][26][27], some NDE methods may not be suitable. For example, Eddy Current Testing, primarily used for detecting surface and near-surface defects, may have limited applicability due to the non-conductive nature of these materials.…”

Section: Introductionmentioning

confidence: 99%

Curvature Correction for Crack Depth Measurement Using Ultrasonic Pulse Velocity

Liu,

Wu,

Donskoy

2024

Acoustics

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This study investigates the application of Ultrasonic Pulse Velocity (UPV) for crack depth estimation in cylindrical structures, focusing on two approaches: reference measurement and dual measurement. It addresses the challenge of applying UPV to curved surfaces, a scenario less studied than that of flat surfaces. The paper details the modification of UPV methodologies to account for curvature, presenting analytic solutions and numerical validations for both approaches. The findings reveal that curvature-adjusted equations yield accurate crack depth estimations, enhancing the reliability of UPV in diverse structural contexts. The study contributes to safer and more effective structural health monitoring, particularly in cylindrical infrastructures like columns and foundations.

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“…In general, densities of the TWPs are about 1.2 g/cm 3 , while the TRWP densities should be higher than the TWPs due to the encrusted mineral particles [9,10]. Granite and marble are some of representative rock components and their densities are about 2.7 g/cm 3 [11,12]. TRWPs with high density have many mineral particles or environmental contaminants attached to the surface.…”

Section: Introductionmentioning

confidence: 99%

Classification and Characterization of Tire-Road Wear Particles in Road Dust by Density

Jung

Choi

2022

Polymers

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Tire treads are abraded by friction with the road surface, producing tire tread wear particles (TWPs). TWPs combined with other particles on the road such as road wear particles (RWPs) and mineral particles (MPs), forming tire-road wear particles (TRWPs). Dust on an asphalt pavement road is composed of various components such as TRWPs, asphalt pavement wear particles (APWPs), MPs, plant-related particles (PRPs), and so on. TRWPs have been considered as one of major contaminants produced by driving and their properties are important for study on real abrasion behaviors of tire treads during driving as well as environmental contamination. Densities of the TRWPs are totally dependent on the amount of the other components deposited in the TWPs. In this study, a classification method of TRWPs in the road dust was developed using density separation and the classified TRWPs were characterized using image analysis and pyrolytic technique. Chloroform was used to remove APWPs from mixture of TRWPs and APWPs. TRWPs were found in the density range of 1.20–1.70 g/cm3. By decreasing the particle size of the road dust, the TRWP content in the road dust increased and its density slightly tended to increase. Aspect ratios of the TRWPs varied and there were many TRWPs with low aspect ratio below 2.0. The aspect ratio range was 1.2–5.2. Rubber compositions of the TRWPs were found to be mainly NR/SBR biblend or NR/BR/SBR triblend.

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Mean grain size determination in marbles by ultrasonic velocity techniques

Cited by 23 publications

References 9 publications

Monitoring and Evaluation of Sandstone Decay Adopting Non-Destructive Techniques: On-Site Application on Building Stones

Monitoring and Evaluation of Sandstone Decay Adopting Non-Destructive Techniques: On-Site Application on Building Stones

Curvature Correction for Crack Depth Measurement Using Ultrasonic Pulse Velocity

Classification and Characterization of Tire-Road Wear Particles in Road Dust by Density

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