Download or read book An Evaluation of Borehole Hydraulic Conductivity Equations and Field Determined Soil Water Characteristic Curves written by Johnathan Dale Blanchard and published by . This book was released on 2017 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The methods utilized to determine the hydraulic conductivity of compacted clay liners (CCLs) are of importance for safe guarding the environment from landfill leachate. Therefore, the methods utilized in the analysis of the Two Stage Borehole (TSB) test, as described in the ASTM D6391-11 (Method A, B, and C) standard, were evaluated. Data from hydraulic conductivity tests, as performed on three test pads, were utilized to review the ASTM D6391-11 equations. Additionally, two test pads were instrumented with volumetric water content and soil water matric potential sensors to facilitate the determination of field-obtained soil water characteristic curves (SWCCs) and hydraulic conductivity functions (k-functions) for unsaturated soils. For the determination of the SWCCs and k-functions, each test pad was subjected to an infiltration cycle, using either a sealed double ring infiltrometer or a two-stage borehole infiltrometer, followed by a drying cycle. To compare the results that were obtained from the field-obtained SWCCs and k-functions, laboratory tests were performed on Shelby tube samples acquired from the corresponding test pad. The obtained data were fitted using the van Genuchten model and the RETC (RETention Curve) program. The results that were obtained from TSB testing led to the conclusion that Method B and C, as written in the ASTMs D6391-11 standard contained errors that impacted the results that were obtained from hydraulic conductivity testing. Specifically, utilizing Method C provided results that were four times greater than the hydraulic conductivity and utilizing Method B provided results that were as much as two orders of magnitude greater than the hydraulic conductivity. Several recommendations are proposed herein to ensure accurate hydraulic conductivity analysis is performed in the future. It was further determined that a poor agreement exists between field-obtained and laboratory-obtained k-functions and SWCCs, as reported in other studies. Therefore, field-obtained k-functions are preferential, when available.
Download or read book Evaluation of Methods for Determining Soil water Retentivity and Unsaturated Hydraulic Conductivity written by John M. Marion and published by . This book was released on 1993 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Hydraulic Conductivity from Grain Size Analysis written by Michael Kasenow and published by Water Resources Publication. This book was released on 2002 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Constant Flow Method for Determining the Soil Water Characteristic Curve and Unsaturated Hydraulic Conductivity Function of Granular Soils written by Alexandra Wayllace and published by . This book was released on 2004 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Undisturbed Core Method for Determining and Evaluating the Hydraulic Conductivity of Unsaturated Sediments written by Atef Elzeftawy and published by . This book was released on 1983 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Field Method of Measuring Soil Hydraulic Conductivity Above the Water Table written by Mahmoud Abd El-Haliem Abu-Zied and published by . This book was released on 1960 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Different Methods for the Determination of Unsaturated Soil water Hydraulic Conductivity written by Glenn Venson Wilson and published by . This book was released on 1981 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.
Download or read book Soil Water Measurement written by J. David Cooper and published by John Wiley & Sons. This book was released on 2016-03-21 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written for all those involved in measurement of soil water phenomena, whether they be environmental scientists, field technicians, agronomists, meteorologists, hydrogeologists, foresters, physical geographers, civil or water engineers or students in these subjects. It contains a comprehensive description of all the major methods used for measurement of soil water content and potential, solute concentration, transport and balance of water and solutes, including recharge to groundwater aquifers. The emphasis is firmly on techniques which can be applied in the field or on samples obtained from the field. The theory and practice of the workings of the main instruments and methods available is described, along with practical tips on surmounting some of the main difficulties and explanations of many commonly encountered jargon words.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Pedotransfer Functions in Soil Hydrology written by Yakov Pachepsky and published by Elsevier. This book was released on 2004-12-30 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental and agricultural modeling and assessment have a multitude of uses for soil parameters governing retention and transport of water and chemicals in soils. These parameters are notorious for the difficulties and high labor costs involved in measuring them. Good estimates instead of direct measurements may be accurate enough for many applications. Pedotransfer functions provide such estimates by utilizing available soil survey information to translate data we have into data we need. This book is the first book on the topic. It provides the unique compendium of pedotransfer functions, summarizes the vast international experience in this field, and shows how the value of soil data can be increased by using them in pedotransfer functions to predict soil hydrologic and related properties. The book is a rich source of information crucial for environmental research and applications.
Download or read book Evaluation of Hydraulic Conductivity of Non Aqueous Phase Liquids in Partially Saturated Soils written by Chijioke Ekeleme Akamiro and published by . This book was released on 2013 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Auger hole Method written by Bastiaan Verhoeven and published by . This book was released on 1962 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical Abstracts written by and published by . This book was released on 1986 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Groundwater written by R. Allan Freeze and published by Prentice Hall. This book was released on 1979 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors preceive a trend in the study and practice of groundwater hydrology. They see a science that is emerging from its geological roots and its early hydraulic applications into a full-fledged environmental science. They see a science that is becoming more interdisciplinary in nature and of greater importance in the affairs of man. This book is their response, and they have provided a text that is suited to the study of groundwater during this period of emergence.
Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
