Download or read book Representative Specimen Size for Hydraulic Conductivity Assessment of Compacted Soil Liners written by CH. Benson and published by . This book was released on 1994 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: An alternative to field measurement of hydraulic conductivity is to conduct laboratory hydraulic conductivity tests on specimens large enough to simulate field-scale conditions. Laboratory tests can be performed rapidly using standard procedures and with accurate control of state of stress and gradient. The objective of this research program was to identify how large a specimen must be to yield field-scale hydraulic conductivity. This objective was accomplished through field testing, laboratory testing, and statistical modeling.

Download or read book Hydraulic Conductivity and Waste Contaminant Transport in Soil written by David Edwin Daniel and published by ASTM International. This book was released on 1994 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Representative Sample Size for Hydraulic Conductivity of Compacted Clay written by Fransiscus S. Hardianto and published by . This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Geomechanics written by Bernhard A. Schrefler and published by John Wiley & Sons. This book was released on 2013-03-28 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a range of topics that are of increasing importance in engineering practice: natural hazards, pollution, and environmental protection through good practice. The first half of the book deals with natural risk factors, of both natural and human origin, that should be considered: subsidence, accidental infiltration, soil instability, rockslides and mudslides, debris flow, and degradation of buildings and monuments due to pollution and climactic effects, for example. These problems are highlighted and it is shown that a combination of sophisticated numerical techniques and extensive experimental investigations are necessary in order to effectively tackle these problems. The second half of the book is devoted to the use of polluted sites and associated problems, a topic of growing significance given the increasing reclamation of land from abandoned industrial sites for urban development over the last 20 years. Different types of oil pollution and decontamination methods are described, followed by a discussion of waste management and detailed coverage of confinement liners used in surface waste disposal.

Download or read book Field Hydraulic Conductivity Tests for Compacted Soil Liners written by JO. Sai and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field hydraulic conductivity tests are required to determine the in situ hydraulic conductivity of compacted clay soils used in the liners for hazardous waste management facilities. The test must be capable of measuring hydraulic conductivities of 1 × 10-9 m/s or less, and the values obtained must be representative of the overall soil liner. Few of the methods available are capable of both measuring low hydraulic conductivities and obtaining representative values. Test methods which meet these requirements include large single-ring infiltrometers, sealed double-ring infiltrometers, and collection lysimeters. The main drawback in the use of collection lysimeters is that it can take months to obtain steady-state hydraulic conductivity values. Sealed double-ring infiltrometers are practical to use and have the advantage of few ambiguities in the experimental procedures, few possibilities for yielding false low values, and are large enough to yield results representing the overall liner characteristics.

Download or read book Geoenvironmental Engineering written by Raymond Nen Yong and published by Thomas Telford. This book was released on 1997 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world there is an ever increasing awareness of the importance of environmental issues. Pollution of the natural environment is welfare. Nevertheless, economic stability and prosperity necessitate the continuation of such activities and society faces the challenge of minimising the resulting adverse effects. This substantial volume is the proceedings of the British Geotechnical Society's major conference for geo-environmental engineering of contaminated land.

Download or read book State of the art Field Hydraulic Conductivity Testing of Compacted Soils written by Joseph O. Sai and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation and Remediation of Low Permeability and Dual Porosity Environments written by Martin N. Sara and published by ASTM International. This book was released on 2002 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Constructing and Controlling Compaction of Earth Fills written by Donald W. Shanklin and published by ASTM International. This book was released on 2000 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Presents 22 papers, from the July 1999 symposium, written on the use of various standardized methods for specifying and controlling the compaction of soil for engineered constructed earth fills. Perspectives include the historical background, current state-of-the- art practices, case histories of challenging situations, concerns regarding appropriate design parameters for compaction control, and new methods to evaluate soil compaction and related qualities. Annotation copyrighted by Book News, Inc., Portland, OR.

Download or read book Hydraulic Conductivity Assessment of Compacted Soil Liners written by Craig H. Benson and published by . This book was released on 1992 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Field and Laboratory Measurements of the Hydraulic Conductivity of Compacted Mine Waste Rock written by Todd H. Hill and published by . This book was released on 1998 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Geotechnical Engineering written by and published by . This book was released on 1996 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comptes rendus du quatorzi me conf rence internationale de M canique des sols et des travaux de fondation Hambourg 6 12 septembre 1997 written by and published by CRC Press. This book was released on 1997 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsaturated Hydraulic Conductivity of Barrier Soils Used for Final Covers written by Jeffrey S. Meerdink and published by . This book was released on 1994 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilistic Methods in Geotechnical Engineering written by K.S. Li and published by CRC Press. This book was released on 2020-08-19 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of this conference contain keynote addresses on recent developments in geotechnical reliability and limit state design in geotechnics. It also contains invited lectures on such topics as modelling of soil variability, simulation of random fields and probability of rock joints. Contents: Keynote addresses on recent development on geotechnical reliability and limit state design in geotechnics, and invited lectures on modelling of soil variability, simulation of random field, probabilistic of rock joints, and probabilistic design of foundations and slopes. Other papers on analytical techniques in geotechnical reliability, modelling of soil properties, and probabilistic analysis of slopes, embankments and foundations.

Download or read book Proceedings of the Annual Symposium on Engineering Geology Geotechnical Engineering written by and published by . This book was released on 2000 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Constant Head Infiltration Test Analysis Methods for Field Estimation of Saturated Hydraulic Conductivity of Compacted Clay Liners written by D. Cazaux and published by . This book was released on 2002 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field infiltration tests are commonly used to assess the hydraulic conductivity of low permeability materials such as natural clay barriers and compacted clay liners. The soils used for compacted clay liners are always partially saturated and require very long testing times to reach steady-state flow conditions. Consequently, because they are less time consuming, laboratory tests are usually preferred for construction quality control. Nevertheless, it is well-known that field tests are more representative of the clay liner because of the scale effect. This is why, since the 1980s, the main issues associated with field procedures have been studied and several methods proposed for testing low-permeability materials within short time periods. The proposed methods are based on early-time flow analysis in unsaturated conditions and have been applied to various compacted soils under field and laboratory conditions. To evaluate these methods, we carried out a comprehensive testing program using a hydraulic field infiltrometer method (sealed single-ring infiltrometer) and a laboratory rigid-wall permeameter method that reproduces surface field test conditions. The laboratory tests were continued until saturated hydraulic conductivity was obtained so that this value could be compared against the hydraulic conductivity estimated from early-time analysis on the same specimen. The obtained results show the influence of (a) the initial moisture content, (b) the sorptivity and hydraulic head on the early-time infiltration rate, and (c) the final estimated hydraulic conductivity. A comparison of analysis methods shows the limitations of some and tries to explain the reasons for such inadequacies in the description of early-time unsaturated flows. Nevertheless, the conclusions of our study show that conventional early-time analyses give a good estimation of saturated hydraulic conductivity within a short time period compatible with construction quality-control procedures.