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Author : Donald Jenks Belcher
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.E/5 ( download)
Download or read book The Measurement of Soil Moisture and Density by Neutron and Gamma-ray Scattering written by Donald Jenks Belcher and published by . This book was released on 1950 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. J. Belcher
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (17 download)
Download or read book The Measurement of Soil Moisture and Density by Neutron and Gamma Ray Scattering written by D. J. Belcher and published by . This book was released on 1950 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Horonjeff
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (359 download)
Download or read book The Use of Radioactive Material for the Measurement of Water Content and Density of Soil written by Robert Horonjeff and published by . This book was released on 1954 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robin P. Gardner
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (319 download)
Download or read book Density and Moisture Content Measurements by Nuclear Methods written by Robin P. Gardner and published by . This book was released on 1967 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sources of error that have been identified on the gamma-ray soil density gauge are: (1) sensitivity to local density variations, especially at the soil surface, (2) sensitivity to soil composition, and (3) inaccurate calibration techniques. An attempt was made to solve these problems by developing for each gauge calibration models that enable stable and homogenous non-soil standards to be used for calibration. Calibration standards and calibration models for each gauge were found and tested. In the process of developing and testing the new nuclear gauge calibration model, the dual-gauge principal of compensating these gauges for variations in soil composition was discovered. The air-gap method of using this principal is explained and was optimized by using the calibration model developed in the current study.
Author : R. Sweeney
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (359 download)
Download or read book Measurement of Soil Moisture and Density by Nuclear Methods written by R. Sweeney and published by . This book was released on 1962 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William M. Aldous
Publisher :
ISBN 13 :
Total Pages : 614 pages
Book Rating : 4.F/5 ( download)
Download or read book The Measurement of Soil Moisture by Heat Diffusion written by William M. Aldous and published by . This book was released on 1952 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robin P. Gardner
Publisher : Highway Research Board
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (359 download)
Download or read book Optimization of Density and Moisture Content Measurements by Nuclear Methods written by Robin P. Gardner and published by Highway Research Board. This book was released on 1971 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective was to minimize the errors identified with measurement of density and moisture content of soils using nuclear gauges. To provide a reasonable basis for optimization, all identified errors were combined to yield a single criterion, the quality factor, which can be used to evaluate the over-all performance of a nuclear density gauge. Research aimed at minimizing moisture content measurement errors involved using the Monte Carlo or random walk method to simulate gauge response, checking the results of the simulation against experimental studies, and attempting to generalize the Monte Carlo results.
Author : M. Van der Westhuizen
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Measurement of Moisture Content and Dry Bulk-density of the Top Layer of Agricultural Soils, with Minimum Calibration, Using a Gamma-ray Attenuation Methos written by M. Van der Westhuizen and published by . This book was released on 1978 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arnold Ivan Johnson
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (121 download)
Download or read book Methods of Measuring Soil Moisture in the Field written by Arnold Ivan Johnson and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluates methods for measuring soil moisture and describes the equipment used.
Author : Robert Henry Ruf
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.E/5 ( download)
Download or read book Gamma Ray Attenuation as a Measure of Soil Moisture written by Robert Henry Ruf and published by . This book was released on 1957 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Horonjeff
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (528 download)
Download or read book Application of Neutron and Gamma Ray Scattering Methods for Measuring Moisture Content and Density to Control of Field Compaction written by Robert Horonjeff and published by . This book was released on 1955* with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council (U.S.). Highway Research Board
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.E/5 ( download)
Download or read book Special Report written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1958 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald J. Belcher
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Use of Radioactive Material to Measure Soil Moisture and Density written by Donald J. Belcher and published by . This book was released on 1953 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for convenient instruments to measure soil moisture and density in place in a quick, reliable, and possibly continuous manner has long been felt by soils engineers. This paper summarizes the work done up to this time by the Civil Aeronautics Administration and Cornell University on the nuclear meters that are designed to solve the problem. The method presented here makes use of the physical principles of the scattering of neutrons and gamma rays. A source of proper radiation, radium D-beryllium or cobalt 60, is contained in cylindrical probes along with a detector of slow neutrons or of gamma rays, respectively. The probe is inserted into the soil mass through a 1-in. diameter pipe, and the radiation penetrates the nearby soil and is scattered back toward the detector, the amount and character of the scattered radiation giving a measure of the characteristics. The design and testing of such probe meters that measure soils at depth and of the related surface meters that measure thin-layered soils are described in detail. With suitable care, the probe meters measure moisture to ±1 lb of water per cu ft, and measure density to ±5 lb of soil per cu ft. The surface meters are in an earlier experimental stage and are not so accurate. The time required to take a complete set of readings is about 15 min. Further laboratory and field testing is being conducted to perfect these meters to fulfill specific requirements of different engineering projects.
Author : E. S. B. Ferraz
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)
Download or read book Determining Water Content and Bulk Density of Soil by Gamma Ray Attenuation Methods written by E. S. B. Ferraz and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geodata International
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.3/5 (91 download)
Download or read book Evaluation of Soil Moisture Measurement Using Gamma Ray Spectroscopy written by Geodata International and published by . This book was released on 1977 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. F. Ballard
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (319 download)
Download or read book Density and Moisture Content Measurements by Nuclear Methods written by L. F. Ballard and published by . This book was released on 1965 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data is provided from an evaluation of the accuracy of the nuclear gages in comparison with the currently used non- nuclear methods of determining soil density and moisture content. The research study was principally theoretical in nature and was conducted in two parts with each part respectively considering density and moisture content. Two existing commercial gages were evaluated, and a nominal experimental program employing non-soil standards of known density and composition was conducted to verify the density results. The results of the moisture content study were checked against data in the literature.
Author : Cornelius H. M. Van Bavel
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.3/5 (117 download)
Download or read book Measurement of Soil Moisture Content by the Neutron Method written by Cornelius H. M. Van Bavel and published by . This book was released on 1958 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
