Download or read book Soil Compaction on Forest and Range Lands written by Howard William Lull and published by . This book was released on 1959 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to review available information on soil compaction as related to soil and water conservation on forest and range lands.

Download or read book Soil Disturbance and Compaction in Wildland Management written by Earl B. Alexander and published by . This book was released on 1985 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsaturated Soils Experimental Studies written by Tom Schanz and published by Springer Science & Business Media. This book was released on 2004-09-14 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings document the various papers delivered and partially presented at the International Conference “From experimental evidence towards numerical modeling of unsaturated soils,” which was held in Weimar (Germany) during 18-19 September 2003. The conference was organized under the auspices of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE) and the National German G- technical Society (DGGT). The need to understand the behavior of unsaturated soils is becoming exclusively - sential for the geotechnical engineers and designers. In the last three decades many - searchers have made significant contribution to the understanding of the unsaturated soil mechanics. Nevertheless, application of the subject to variety of new problems still - quires our attention. This International conference is a mere attempt to unite researchers and engineers in geotechnical engineering and to discuss about the problems associated with the unsaturated soils. Doing so the objectives of these lecture notes are as follows: - to promote unsaturated soil mechanics for practical application, - to exchange experiences in experimental unsaturated soil mechanics and numerical modeling, - to discuss application of unsaturated soil mechanics to variety of problems. In other words, we could also name these two volumes as “From theory to daily pr- tice”. I would like to extend my deep sense of appreciation as the editor and the Head of the organizing committee, to many persons who have contributed either directly or indirectly to organize the International conference and to finalize these proceedings.

Download or read book Compaction of Soils Granulates and Powders written by W. Fellin and published by CRC Press. This book was released on 2000-03-02 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary volume comprises papers from several fields related to compaction. Topics include: soil compaction for pavements and roads; deep soil compaction by vibration, impact and underground explosion; compaction control; and compaction processes in engineering.

Download or read book Assessing Soil Compaction on Forest Inventory Analysis Phase 3 Field Plots Using a Pocket Penetrometer written by Michael C. Amacher and published by . This book was released on 2004 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil compaction is an important indicator of soil quality, yet few practical methods are available to quantitatively measure this variable. Although an assessment of the areal extent of soil compaction is included as part of the soil indicator portion of the Forest Inventory & Analysis (FIA) program, no quantitative measurement of the degree of soil compaction is made. We tested a small, lightweight pocket penetrometer that measures soil compression strength as a simple, quantitative measure of the degree of compaction of mineral soils under forested conditions. Soil compression strengths were significantly higher in compacted trails and areas than in adjacent undisturbed locations. In contrast, no significant difference in soil compression strength was found between rutted trails and adjacent undisturbed areas. A protocol is suggested for further pilot testing of this device as part of the soil indicator assessment. The main disadvantage of this device is that many of the compacted soils had compression strengths higher than the maximum measurable value of 4.5 tons/ft2. Despite this limitation, this device can rapidly and easily distinguish between compacted and uncompacted areas in the field. Time previously spent by field crews trying to identify qualitative evidences of compaction can instead be used to provide a quantitative measure of the degree of compaction, which would strengthen the analysis and interpretation of the soil quality indicator.

Download or read book compaction of soils written by and published by ASTM International. This book was released on 1988 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unsaturated Soils Advances in Geo Engineering written by D.G. Toll and published by CRC Press. This book was released on 2008-06-23 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsaturated Soils: Advances in Geo-Engineering comprises 136 contributions from leading international researchers and practitioners, presented at the First European Conference on Unsaturated Soils (Durham, UK, 2-4 July 2008). The papers report on the latest advances in geo-engineering aspects of unsaturated soils. It is the first collection to focu

Download or read book Characteristics of Compacted Soils from Eastern Oregon written by Hock Swee Goh and published by . This book was released on 1979 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil samples and soil clods were collected from ten potato fields in Eastern Oregon. An index of grain size distribution was sought that would correlate well with compacted soil bulk density. The Hazen coefficient of uniformity was best related to bulk density. The limitations of various indices and their relationship to bulk density are discussed. Soil samples were equilibrated to three metric suctions and compacted by a series of static pressures. The semilog graphs of bulk density versus pressure were linear over the range of applied stress and moisture content of the experiment. For the same soils but with different moisture content, the slopes of the graphs were parallel to each other. This indicates that the slope of the graph, the compression index, is independent of the moisture content. The data obtained in this study were used to check Larson's equation for predicting soil compaction. His predicted values of compression index were higher than those measured for Oregon Aridisols, but when the measured values were used, Larson's equation was successful in predicting soil compaction. The minimum static stresses required to produce the clod bulk densities found in the field were estimated in the laboratory. The limitations of this calculation are discussed. A multiple regression of the dependent variables, compression indices and bulk densities on the independent variables of grain size, organic matter content and Hazen coefficient of uniformity was carried out. Fine silt content together with total sand accounted for 88% and 90% of the variation in compression index and bulk density respectively. Probe geometry of a soil penetrometer has an effect on measured soil strength. The 2 mm diameter, 10° (included semiangie = 5°) pointed probe was found more suitable than a blunt one in comparing strength of different soils. The different behaviour of soils equilibrated to similar matric suction and compacted at the same static pressure was explained in terms of soil-probe interaction, frictional forces and cohesive and adhesive properties of the system. Soil strength increased with increasing compacting pressure applied to the soil. The increase in soil strength was less for a sandy soil than a fine textured soil. The increase in soil strength was mainly due to increased bulk density of the soil. For a soil subjected to the same compacting pressure, the soil strength increased with increasing matric suctions. The effect of soil water content and grain size distribution on soil strength was difficult to separate.

Download or read book Soil Compaction written by Richard Wolkowski and published by . This book was released on 2008 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Compaction in Crop Production written by B.D. Soane and published by Elsevier. This book was released on 2013-10-22 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global review of the mechanisms, incidence and control measures related to the problems of soil compaction in agriculture, forestry and other cropping systems. Among the disciplines which relate to this subject are soil physics, soil mechanics, vehicle mechanics, agricultural engineering, plant physiology, agronomy, pedology, climatology and economics. The volume will be of great value to soil scientists, agricultural engineers, and all those involved with irrigation, drainage and tillage. It will help to facilitate the exchange of information on current work throughout the world, as well as to promote scientific understanding and stimulate the development, evaluation and adoption of practical solutions to these widespread and urgent problems.

Download or read book Soil Compaction After Yarding of Small diameter Douglas fir with a Small Tractor in Southwest Oregon written by Michael P. Amaranthus and published by . This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subsoil Compaction written by Rainer Horn and published by . This book was released on 2000 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teory; Modelling; Properties; Distribution; Methods.

Download or read book Soil Compaction written by and published by . This book was released on 1951 with total page 0 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 Soil Compaction and Loosening Treatments Affect Loblolly Pine Growth in Pots written by Glyndon E. Hatchell and published by . This book was released on 1970 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on Laboratory Investigation of Compacted Earth as a Lining Material to Limit Seepage Losses in Canals written by and published by . This book was released on 1942 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of Advances in Soil Science is to provide a forum for leading scientists to analyze and summarize the available scientific information on a subject, assessing its importance and identifying additional research needs. A wide array of subjects has been addressed by authors from many countries in the initial ten volumes of the series. The quick acceptance of the series by both authors and readers has been very gratifying and confirms our perception that a need did exist for a medium to fill the gap between the scientific journals and the comprehensive reference books. This volume is the first of the series devoted entirely to a single topic soil degradation. Future volumes will include both single-topic volumes as well as volumes containing reviews of different topics of soil science, as in the case of the first ten volumes. There are increasing concern and attention about managing natural re sources, particularly soil and water. Soil degradation is clearly one of the most pressing problems facing mankind. Although the spotlight regarding soil degradation in recent years has focused on Africa, concern about the degradation of soil and water resources is worldwide. The widespread con cern about global environmental change is also being linked to severe problems of soil degradation. Therefore, we are indeed pleased that the first volume of the series devoted to a single topic addresses such an impor tant issue. The current volume is also the first of the series involving a guest editor.