The effect of Schmidt hammer type on uniaxial compressive strength prediction of rock

Büyüksağiş, I. Sedat; Göktan, R.M.

doi:10.1016/j.ijrmms.2006.07.008

Cited by 84 publications

(43 citation statements)

References 33 publications

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“…According to the International Society for Rock Mechanics (ISRM 1978) the L-type hammer, which has the lower impact energy, should be used for the hardness characterization for rocks having uniaxial compressive strength (UCS) between 20 and 150 MPa. On the other hand some authors suggest that the N-type hammer outperforms the L-type (Buyuksagis and Goktan 2007), because of the higher impact energy. The American Society for Testing and Materials (ASTM 2001) does not prefer a specific hammer type at all.…”

Section: Discussionmentioning

confidence: 99%

Dimension stones of the North Hungarian masonry arch bridges

Bögöly

Török

Görög

2015

Central European Geology

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Stone masonry arch bridges in North Hungary represent cultural heritage values. For the maintenance and preservation of these bridges detailed mapping of lithologies and weathering forms are required. The purpose of this paper is to present the identified lithotypes, their conditions (weathering grade) and their petrophysical properties by using in situ lithological mapping, documentation of weathering forms, non-destructive tests and laboratory analyses. Furthermore these analyses demonstrate the difficulties of characterization and diagnostics of the historical construction materials. Additionally the results of condition assessments and the properties of the four different dimension stones from four different sites provide examples for the large dissimilarities regarding the strength parameters. The above-listed parameters are required as input data for stability calculations and modeling of these structures.

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Section: Discussionmentioning

confidence: 99%

Dimension stones of the North Hungarian masonry arch bridges

Bögöly

Török

Görög

2015

Central European Geology

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“…All the samples used in the cutting tests were approximately 1.7-1.9 kg in weight, having a length of 150 mm, and 150 mm × 30 mm section. Some mechanical properties of the tested rocks are given in Table 1, together with their mineralogical compositions obtained from thin sections Table 2 [14]. The mechanical tests were performed according to related ISRM suggested methods [15] and testing procedures of the used instruments.…”

Section: Design Of Experimental Set-upmentioning

confidence: 99%

Investigation on Stone Machining Performance Using Force and Specific Energy

Turchetta

Polini

Büyüksağiş

2009

Advances in Mechanical Engineering

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Cutting force and energy are often used as parameters for monitoring the stone cutting process. Empirical models are required to guide the selection of the cutting conditions. This paper shows a simple empirical model to predict the variation of the cutting energy. It puts into relationship the cutting force and the cutting energy with the idealized chip thickness. It has been tested on six different kinds of stone. The models can be used to guide the selection of cutting conditions. The chip generation and removal process has been quantified with the intention of assisting both the toolmaker and the stonemason in optimizing the tool composition and cutting process parameters, respectively.

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“…The operation of the device is based on the principle that the rebound of an elastic mass impacting on a surface depends on its hardness and thus the harder the surface the higher is the rebound distance [37]. Several societies, including the International Society for Rock Mechanics [38,39] and the American Society for Testing and Materials [40], have proposed test methods and standards, respectively, for the proper operation of the device [41]. Other options for determining such material properties with the use of the Schmidt hammer have also been proposed [42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Correlation between Material Properties and Breakage Rate Parameters Determined from Grinding Tests

Petrakis

Komnitsas

2018

Applied Sciences

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Abstract:The present study investigates four materials, namely quartz, marble, quartzite and metasandstone and aims to establish correlations, with the use of simple and multiple regression analysis, between their properties and breakage rate parameters. The material properties considered in this study derived from the application of destructive and non-destructive tests and include P-wave velocity (V p ), Schmidt rebound value (R L ), uniaxial compressive strength (UCS) and tangent modulus of elasticity (E t ), while the breakage rate parameters determined from batch grinding tests, include breakage rate S i , maximum breakage rate S m , α T and α, and optimum particle size x m . The results indicate that the properties of all materials examined show very good correlation and can be used to predict S i or α T . Furthermore, parameter α is well correlated with V p , R L and E t using inverse exponential functions, while S m is strongly correlated with R L and UCS. Overall, it is deduced that multiple regression analysis involving two independent variables is a reliable approach and can be used to identify correlations between properties and breakage rate parameters for quartz, quartzite and metasandstone, which are silica rich materials. The only exception shown is the determination of x m for marble.

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The effect of Schmidt hammer type on uniaxial compressive strength prediction of rock

Cited by 84 publications

References 33 publications

Dimension stones of the North Hungarian masonry arch bridges

Dimension stones of the North Hungarian masonry arch bridges

Investigation on Stone Machining Performance Using Force and Specific Energy

Correlation between Material Properties and Breakage Rate Parameters Determined from Grinding Tests

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