Effect of air-drying duration on the engineering properties of four clay-bearing rocks in Texas

Youn, Heejung; Tonon, Fulvio

doi:10.1016/j.enggeo.2010.06.012

Cited by 26 publications

(10 citation statements)

References 20 publications

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“…For example, the rock specimen with high abrasivity is likely to weather upon wetting and drying compared to low abrasive rocks. The argillaceous sedimentary rocks with high clay mineral contents are prone to degrade in the presence of water (Marques et al 2005;Youn and Tonon 2010). In other words, the rock abrasivity represented by wear volume is greater in wet condition than dry condition, and the difference would increase as the rocks are more degradable.…”

Section: Fig 4 Consistency Of Wear Volume For the Same Specimenmentioning

confidence: 98%

Development of Rotary Abrasion Testing Apparatus for Rock Cores

Lee

Kim

Youn

2014

Rock Mechanics and Its Applications in Civil, Mining, and Petroleum Engineering

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This paper describes a new rotary abrasion apparatus and the testing method to measure the abrasivity of rocks. The new apparatus includes the rotating circular disc on which Jumunjin sands were placed and worn against rock core surface. The benefits of the developed apparatus over Cerchar abrasivity test, which has been commonly used in the measurement of abrasiveness of rocks, are the fact that the testing is applicable to wide strength range of rock cores and that the abrasive materials (sands) are inexpensive and replaceable. The abrasivity of rocks was defined based on wear volume of rock cores in terms of abrasivity coefficient, and the testing apparatus and method are validated by series of laboratory experiments.

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Section: Fig 4 Consistency Of Wear Volume For the Same Specimenmentioning

confidence: 98%

Development of Rotary Abrasion Testing Apparatus for Rock Cores

Lee

Kim

Youn

2014

Rock Mechanics and Its Applications in Civil, Mining, and Petroleum Engineering

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“…Such cyclic behaviour is accompanied by irreversible volume changes. Case histories have been reported by many authors during recent decades (Bjerrum, 1967;Van Eeckhout, 1976;Olivier, 1979;Botts, 1986;Picarelli & Urciuoli, 1993;Vaughan, 1997;Wong, 1998;Cafaro & Cotecchia, 2001;Pejón & Zuquette, 2002;Alonso & Alcoverro, 2004;Valès et al, 2004;Marques et al, 2005;Rejeb & Cabrera, 2006;Picarelli & Di Maio, 2010;Youn & Tonon, 2010;Alonso et al, 2010;Cardoso et al, 2012;Pineda & Romero, 2013).…”

Section: Introductionmentioning

confidence: 99%

Environmental degradation of claystones

Pineda¹,

Alonso²,

Romero³

2014

Géotechnique

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The paper presents the results of a comprehensive experimental programme carried out to study the effects of relative humidity cycling on the degradation of argillaceous rocks. Lilla claystone, a lowporosity Tertiary rock, was used for this purpose. Four aspects were analysed: (a) the influence of the number of relative humidity cycles; (b) the amplitude of relative humidity cycles; (c) the stress level; and (d) the effects of using liquid water or vapour during wetting paths. The application of relative humidity cycles induced a progressive degradation of the rock in terms of accumulative irreversible volumetric swelling, irreversible reduction in rock stiffness, and tensile strength. The irreversible expansion increased with the amplitude of the relative humidity change. However, it reduced with increase of the confining pressure. This irreversible behaviour accelerated when liquid water was used during the wetting paths. Microstructural analysis has shown that the degradation pattern of Lilla claystone was associated mainly with fissuring, as a consequence of non-uniform deformations of the clayey matrix. This phenomenon leads to the opening of fissures at the weaker interfaces of the clayey matrix with detrital, non-active minerals. A damage law derived in terms of the accumulated volumetric irreversible strain has been proposed to represent the progressive loss in volumetric and shear stiffness as well as the tensile strength.

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“…The absorption of water into pore spaces creates pore-air compression which then results in slaking of clay bearing rocks. Youn and Tonon (2010) Santi and Koncagul (1996) described different modes of slaking of shale and the main cause for each type. Dispersion slaking, swelling slaking, body slaking and surface slaking are the four modes of slaking which result from the presence of Na-kaolinite, Na-montmorillonite, Ca-illite/Ca-kaolinite and Ca-montmorillonite respectively.…”

Section: Slake Durability Of Mudstones and Its Propertiesmentioning

confidence: 99%

Chemical, mineralogical and textural properties of the Kope Formation mudstones: How they affect its durability

Koralegedara

Maynard

2017

Engineering Geology

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for agreeing to serve on my thesis committee and for guiding and supervising me throughout this research. I would especially like to thank Dr. Maynard and Dr. Gerke for their kind help and direction during this research as well as my academic career. I extend my special gratitude to, Dr. Huff for his support on the scanning electron microscopic image analysis, Dr. Thomas Lowell for providing laboratory facilities for particle size analysis and Dr. Carlton Brett for his support in field work. I thank Dr. Mark T. Bowers in the Department of Civil Engineering for providing engineering laboratory equipment and test procedures. I am very grateful to Dr. Tom H. Ridgway in the Department of Chemistry for allowing me to use the atomic absorption spectrometer. I would like to express my sincere appreciation to Michael K. DeSantis , Matthew Jones and my husband, Sanjeewa Rodrigo for their kind support in sample collection and processing. A special thanks to Michael DeSantis for his nice photography. Many others, too numerous to mention individually, have given their support in various ways, and to them all I am very grateful.

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Effect of air-drying duration on the engineering properties of four clay-bearing rocks in Texas

Cited by 26 publications

References 20 publications

Development of Rotary Abrasion Testing Apparatus for Rock Cores

Development of Rotary Abrasion Testing Apparatus for Rock Cores

Environmental degradation of claystones

Chemical, mineralogical and textural properties of the Kope Formation mudstones: How they affect its durability

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