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An Evaluation Of Conventional And Nuclear Methods For Determining In Situ Density And Moisture Content Of Soils
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Book Synopsis An Evaluation of Conventional and Nuclear Methods for Determining In-situ Density and Moisture Content of Soils by : Hugh L. Tyner
Download or read book An Evaluation of Conventional and Nuclear Methods for Determining In-situ Density and Moisture Content of Soils written by Hugh L. Tyner and published by . This book was released on 1966 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Nuclear Methods of Determining Surface in Situ Soil Water Content and Density by : Thomas B Rosser (III.)
Download or read book Evaluation of Nuclear Methods of Determining Surface in Situ Soil Water Content and Density written by Thomas B Rosser (III.) and published by . This book was released on 1969 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory tests were conducted to evaluate the accuracy and reliability of measuring surface in situ soil water content and density by the backscatter and direct transmission nuclear methods using a single nuclear device and scaler. The nuclear device functioned as a surface backscatter moisture and density meter or as a direct transmission density probe. To determine the accuracy of the nuclear measurements, it was necessary to know the actual density and water content of the test soil. Boxes were fabricated to exact dimensions, filled with uniformly compacted soil, and weighed, and actual average soil density values were calculated. Five soil types were tested to approximate a full range of possible construction materials. Each soil type was tested at eight different densities and water contents. To obtain comparative results, soil densities of each sample were determined by two accepted conventional methods (sand-cone and water-balloon) for determining density in the field. Test results indicated that in situ densities determined by the direct transmission nuclear method using the factory calibration curve furnished with the device were as accurate as densities obtained by the sand-cone and water-balloon methods. The direct transmission nuclear method using a WES-developed calibration curve provided slightly more accurate density measurements than either conventional method. A test procedure for determining surface layer density and water content of soil by nuclear methods is presented in Appendix A. (Author).
Book Synopsis Density and Moisture Content Measurements by Nuclear Methods by : Robin P. Gardner
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.
Book Synopsis Evaluation of Nuclear Methods of Determining Surface in Situ Soil Water Content and Density by : Thomas B. Rosser
Download or read book Evaluation of Nuclear Methods of Determining Surface in Situ Soil Water Content and Density written by Thomas B. Rosser and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1976 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Density and Moisture Content Measurements by Nuclear Methods by : L. F. Ballard
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.
Book Synopsis Clemson College Faculty Publications and Research and Abstracts of Doctoral Dissertations and Master's Theses by : Clemson University. Graduate School
Download or read book Clemson College Faculty Publications and Research and Abstracts of Doctoral Dissertations and Master's Theses written by Clemson University. Graduate School and published by . This book was released on 1965 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Methods for Determining Density and Moisture Content by : Thomas I. Csathy
Download or read book Nuclear Methods for Determining Density and Moisture Content written by Thomas I. Csathy and published by . This book was released on 1962 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimization of Density and Moisture Content Measurements by Nuclear Methods by : Robin P. Gardner
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 :ASTM Committee D-18 on Soils for Engineering Purposes Publisher :ASTM International ISBN 13 : Total Pages :113 pages Book Rating :4./5 ( download)
Book Synopsis Symposium on Nuclear Methods for Measuring Soil Density and Moisture by : ASTM Committee D-18 on Soils for Engineering Purposes
Download or read book Symposium on Nuclear Methods for Measuring Soil Density and Moisture written by ASTM Committee D-18 on Soils for Engineering Purposes and published by ASTM International. This book was released on 1961 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of In-place Moisture and Density by Nuclear Methods by : Steve L. Webster
Download or read book Determination of In-place Moisture and Density by Nuclear Methods written by Steve L. Webster and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the design of nuclear equipment and a better understanding of the nuclear principles involved have led to increasingly widespread use of nuclear gages in earth construction control work. This report describes surface-type nuclear equipment, procedures, and various test methods used for making shallow-depth moisture and density determinations in place on soil and soil-aggregate mixtures. In general, a 6-in. direct transmission density test using a properly operating nuclear gage and an up-to-date factory calibration curve will yield test results slightly better than those of conventional density tests. The nuclear test is simpler to perform than conventional tests and requires only about 15 min to obtain both a density and moisture test result. (Modified author abstract).
Book Synopsis Nuclear Metering of Soil Density and Moisture Content at Depth by : D. G. True
Download or read book Nuclear Metering of Soil Density and Moisture Content at Depth written by D. G. True and published by . This book was released on 1971 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted of the potential applicability of nuclear measuring techniques for determining soil density and moisture content at depth, and changes in these properties, for Navy civil engineering purposes. Measurements were obtained under two different types of engineering requirement to assess measurement capabilities: (1) in base material and subgrade soil beneath the pavements at five airfields, to detect long term variations; (2) in hydraulically placed foundation soils at two construction sites, both before and after densification of the soil was attempted by driving compaction piles, to detect changes due to the densification effort. The data were analyzed and statistical procedures were developed to determine the magnitudes of measurement error. Measurement errors were relatively low compared with the measured temporal variations in the soil properties at th soil densification sites, but were so large as to obscure a large portion of low-level, long-term changes occurring in the pavement subgrades. (Author).
Download or read book Report written by and published by . This book was released on 1970 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Use of Nuclear Meters in Soils Investigations by : Preston Clark Smith
Download or read book The Use of Nuclear Meters in Soils Investigations written by Preston Clark Smith and published by . This book was released on 1968 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tester, Soil Density and Moisture, Nuclear Method by : Kenneth L. Brown
Download or read book Tester, Soil Density and Moisture, Nuclear Method written by Kenneth L. Brown and published by . This book was released on 1971 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report covers the evaluation of the nuclear density and moisture method for possible use in military construction. One type of soil was used in the testing. A test fill was constructed and sub-divided into 30 testing locations. Two types of commercial nuclear testers were used. The nuclear testers were evaluated against the conventional density method (sand cone) and conventional moisture (oven dry). Four different nuclear density measurement methods were used. (Author).
Download or read book Highway Research Record written by and published by . This book was released on 1969 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods of Measuring Soil Moisture in the Field by : Arnold Ivan Johnson
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.
