Download or read book Hydraulic Conductivity Measurement in Unsaturated Soils with a Modified Cone Penetrometer written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project, a new cone penetration test (CPT) method for the determining the hydraulic properties of unsaturated soil was developed. A modified cone penetrometer (cone permeameter) is used to inject water into the soil under constant pressure through a screen and measure movement of the wetting front with tensiometer rings. An inverse methodology is used to analyze the cumulative inflow volume and pressure head readings to obtain estimates of the hydraulic conductivity and soil moisture retention curves for the soil. To accomplish the inversion, a cone permeameter test is numerically simulated with the radially symmetric form of Richard's equation and the van Genuchten hydraulic conductivity and moisture retention functions. An objective function expressing the differences between flow responses measured with the cone permeameter and those predicted using the numerical model with the parameterized soil hydraulic properties is minimized to obtain the hydraulic parameter estimates. Full scale tests in a laboratory aquifer and field tests were performed during the course of this study. Excellent agreement between saturated hydraulic conductivity values obtained with the cone permeameter and values from in-situ Guelph permeameter and laboratory falling head tests was obtained. Soil moisture retention curves were similar to those obtained from multi-step outflow and capillary rise tests.
Download or read book Unsaturated Soil Engineering Practice written by Sandra L. Houston and published by . This book was released on 1997 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 68 contains 11 papers presented at a technical session of the First National Conference of the ASCE Geo-Institute, held in Logan, Utah, July 16-19, 1997.
Download or read book Measurement of Thermal Conductivity Function of Unsaturated Soil Using a Transient Water Release and Imbibition Method written by Yi Dong and published by . This book was released on 2014 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal conductivity of unsaturated soil depends on soil water content and soil type. A transient water release and imbibition method (TRIM) is modified to include measurement of the thermal conductivity function (TCF) in conjunction with concurrent measurement of the soil water retention curve (SWRC) and hydraulic conductivity function (HCF). Two pairs of dielectric and thermal needle sensors are embedded in the soil specimen to monitor spatial and temporal variation of water content, thermal conductivity, and thermal diffusivity during drying and wetting processes. Three different soils, including pure sand, silt, and clayey sand are used to examine the effectiveness and validity of the new technique. The thermal conductivity data from the modified TRIM technique accords well with other independent measurements. The results show that the modified TRIM technique provides a fast and accurate way of obtaining thermal properties of different types of soils under both drying and wetting states. The typical testing time for a soil going through a full saturation variation is less than 3 weeks. We observe that the hysteresis in thermal conductivity during a wetting and drying cycle is much less pronounced than that of the hydraulic hysteresis.
Download or read book Standard Test Methods for Measurement of Hydraulic Conductivity of Unsaturated Soils written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measuring Hydraulic Conductivity for Use in Soil Survey written by Janneke J. Bouma and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cone Penetration Testing in Geotechnical Practice written by T. Lunne and published by CRC Press. This book was released on 2002-09-11 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides guidance on the specification, performance, use and interpretation of the Electric Cone Penetration Test (CPU), and in particular the Cone Penetration Test with pore pressure measurement (CPTU) commonly referred to as the "piezocone test".
Download or read book Laboratory and Field Testing of Unsaturated Soils written by Alessandro Tarantino and published by Springer Science & Business Media. This book was released on 2008-12-28 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details recent global advances in laboratory and field testing of unsaturated soils. Coverage includes mechanical, hydraulic, and geo-environmental testing and applications of unsaturated soil monitoring to engineering behavior of geo-structures.
Download or read book Proceedings of the Second International Conference on Ground Water Ecology written by Jack Arthur Stanford and published by . This book was released on 1994 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Solution Composition on Unsaturated Hydraulic Conductivity of Some Texas Soils written by Adham Yassin Saffaf and published by . This book was released on 1969 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chambre des pairs impressions diverses session de 1840 Tome 1 n 15 written by and published by . This book was released on 1840 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media written by M. Th Van Genuchten and published by . This book was released on 1999 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling of Transport Processes in Soils at Various Scales in Time and Space written by Jan Feyen and published by . This book was released on 1999 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combined publication of: ICID, CIGR, Katholieke Universiteit Leuven and EurAgEng
Download or read book The Soils of the Philippines written by Rodelio B. Carating and published by Springer Science & Business. This book was released on 2014-04-23 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first soil survey in the Philippines was done by Mr. Clarence Dorsey, an American soil scientist in the province of Batangas in 1903. The Soils of the Philippines, however, is the first comprehensive summary of more than a century of soil-survey work in this country. It integrates the soil concepts of the reconnaissance soil-survey results, which commenced as early as 1934 and continued until the mid 1960s, with the semi-detailed soil surveys that continue to this day. The result is the first-ever genetic key for classifying Philippine soils at soil series level; thus, making it possible for any newcomers to the soil survey field to confidently produce their own soil map, at a more detailed map scale, to suit the project requirements. This book brings together discussions on soils and soil mapping units and up-to-date international techniques and technologies. It makes soils relevant to current political realities and national issues. As soil survey moves from a reductionist agricultural-development planning tool to a more holistic and integrated approach, to enable us to understand our dynamic and complex environment, The Soils of the Philippines will be the only source of authoritative and updated data on soil resources for macro-level resource management planning for decades to come. With a vanishing breed of experienced soil surveyors, not only in the Philippines but also worldwide, it may remain the only book on Philippine soils for the next hundred years or more. Since soils follow a geological and not a human time frame, the contents of this volume will stay relevant for soil surveyors even in a fast changing world. As the country leaps from an agricultural economy towards modernization and a more diversified economic base, some of the soil series in the Philippines, for example the Guadalupe series underlying the skyscrapers of Makati City, are becoming extinct as a result of urban development. Therefore, this book serves as the repository for the soils that we possess, the soils that have been lost through decades of urbanization while, at the same time, it creates a soil classification system for the soils we are yet to discover.
Download or read book Annual Meetings Abstracts written by American Society of Agronomy and published by . This book was released on 2000 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Correlations of Soil and Rock Properties in Geotechnical Engineering written by Jay Ameratunga and published by Springer. This book was released on 2015-12-11 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a one-stop reference to the empirical correlations used extensively in geotechnical engineering. Empirical correlations play a key role in geotechnical engineering designs and analysis. Laboratory and in situ testing of soils can add significant cost to a civil engineering project. By using appropriate empirical correlations, it is possible to derive many design parameters, thus limiting our reliance on these soil tests. The authors have decades of experience in geotechnical engineering, as professional engineers or researchers. The objective of this book is to present a critical evaluation of a wide range of empirical correlations reported in the literature, along with typical values of soil parameters, in the light of their experience and knowledge. This book will be a one-stop-shop for the practising professionals, geotechnical researchers and academics looking for specific correlations for estimating certain geotechnical parameters. The empirical correlations in the forms of equations and charts and typical values are collated from extensive literature review, and from the authors' database.
Download or read book Measuring Saturated Hydraulic Conductivity of Soils written by American Society of Agricultural Engineers. Drainage Research Committee 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 Limitations of the Instantaneous Profile Method for Field Measurement of Unsaturated Hydraulic Conductivity written by Fred G. Baker and published by . This book was released on 197? with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
