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Optimization Of Density And Moisture Content Measurements By Nuclear Methods
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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.
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 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 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBSIR. written by and published by . This book was released on 1977 with total page 424 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 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).
Download or read book Highway Research News written by and published by . This book was released on 1971 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1963- include section: Urban transportation research digest.
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 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 1971 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis R & D Highway & Safety Transportation System Studies by : United States. Federal Highway Administration
Download or read book R & D Highway & Safety Transportation System Studies written by United States. Federal Highway Administration and published by . This book was released on 1971 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Research and Development Studies Using Federal-aid Research and Planning Funds by :
Download or read book Highway Research and Development Studies Using Federal-aid Research and Planning Funds written by and published by . This book was released on 1968 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Calibration of Nuclear Meters for Measuring Moisture and Density by : W. F. Troxler
Download or read book Calibration of Nuclear Meters for Measuring Moisture and Density written by W. F. Troxler and published by . This book was released on 1964 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The techniques in use today for the calibration of nuclear probes and some of the factors that influence calibration are discussed. Scientists and engineers have now proved the validity of determining the moisture content and density of engineering materials by means of radioactive gages. Even though the ability of the nuclear-type gage to measure moisture and density is generally acknowledged, there are still a number of questions that need answering. One such question involves an appropriate method of calibration and recalibration of the gage. Another question is whether the experimentally determined calibration curves remain valid with varying soil constituents. Initial work involved in the calibration of moisture and density probes required masses of soil that represented an infinite volume. Satisfactory portable standards have now been made to calibrate neutron moisture probes.
Download or read book Geotechnical Abstracts written by and published by . This book was released on 1972 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HRIS Abstracts written by and published by . This book was released on 1989 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook on Radiation Probing, Gauging, Imaging and Analysis by : E.M. Hussein
Download or read book Handbook on Radiation Probing, Gauging, Imaging and Analysis written by E.M. Hussein and published by Springer Science & Business Media. This book was released on 2006-05-05 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for this book arose from my teaching, engineering, and - search experience in the non-power aspects of nuclear technology. The lack of a comprehensive textbook in industrial applications of radiation frustrated my students, who had to resort to a multitude of textbooks and research publications to familiarize themselves with the fundam- tal and practical aspects of radiation technology. As an engineer, I had to acquire the design aspects of radiation devices by trial-and-error, and often by accidental reading of a precious publication. As a researcher and a supervisor of graduate students, I found that the needed literature was either hard to find, or too scattered and diverse. More than once, I discovered that what appeared to be an exciting new idea was an old concept that was tried a few decades earlier during the golden era of “Atom for Peace”. I am hoping, therefore, that this book will serve as a single comprehensive reference source in a growing field that I expect will continue to expand. This book is directed to both neophytes and experts, and is written to combine the old and the new, the basic and the advanced, the simple and the complex. It is anticipated that this book will be of help in - viving older concepts, improving and expanding existing techniques and promoting the development of new ones.
Book Synopsis Summary of Progress - National Cooperative Highway Research Program by : National Cooperative Highway Research Program
Download or read book Summary of Progress - National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
