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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

Выпуски:
Том 22, 2019 Том 21, 2018 Том 20, 2017 Том 19, 2016 Том 18, 2015 Том 17, 2014 Том 16, 2013 Том 15, 2012 Том 14, 2011 Том 13, 2010 Том 12, 2009 Том 11, 2008 Том 10, 2007 Том 9, 2006 Том 8, 2005 Том 7, 2004 Том 6, 2003 Том 5, 2002 Том 4, 2001 Том 3, 2000 Том 2, 1999 Том 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v15.i6.20
pages 517-530

A POROUS MODEL FOR THE INTERPRETATION OF MERCURY POROSIMETRY TESTS

Eduardo Rojas
Faculty of Engineering, Universidad Autonoma de Queretaro, Centro Universitario, Cerro de las Campanas, 76160, Queretaro, Qro., Mexico
Maria de la Luz Perez-Rea
Faculty of Engineering, Universidad Autonoma de Queretaro, Centro Universitario, Cerro de las Campanas, 76160, Queretaro, Qro., Mexico
Gustavo Gallegos
Faculty of Engineering, Universidad Autonoma de Queretaro, Centro Universitario, Cerro de las Campanas, 76160, Queretaro, Qro., Mexico
Julio Leal
Faculty of Engineering, Universidad Autonoma de Queretaro, Centro Universitario, Cerro de las Campanas, 76160, Queretaro, Qro., Mexico

Краткое описание

Recently, the pore size distribution obtained from mercury intrusion porosimetry tests has been used by different researchers to describe some properties of soils. For example, porosimetry results have been used to obtain the soil-water characteristic curve and the hydraulic conductivity for different soils. One of the main assumptions of the mercury intrusion porosimetry test is to consider that the pores of soil can be represented by a bundle of capillary tubes, each of a different diameter, which saturate or dry independently from the others. However, this assumption is unrealistic. This article presents a more realistic porous model based on three different types of pores that allow for the simulation of the hysteresis of the soil-water characteristic curve as for the collapse of pores during drying. This model is a computational type, which means that the different elements are accommodated in two- or three-dimensional regular networks and the filling or drying of pores is followed step by step. The model is used to simulate a mercury intrusion porosimetry test in a material where the pore size distribution has also been obtained from image analysis of scanning electron micrographs. This simulation shows that the current interpretation for mercury intrusion porosimetry test results in pore sizes much smaller than the real values.


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