Download or read book Precision of Soil Compaction Tests Maximum Dry Density and Optimum Moisture Content written by and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of testing soils for engineering purposes Method 5 4 2 Soil compaction and density tests Compaction control test Assignment of maximum dry density and optimum moisture content values 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 Soil Compaction written by William Leonard Hewitt and published by . This book was released on 1950 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance based Measurement of Optimum Moisture for Soil Compaction written by Bradley J. Hansen and published by . This book was released on 2013 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of the challenge achieving maximum field density in subgrade materials is transferring the optimal compaction and moisture content data from laboratory testing to the field. This research investigated the proficiency of four different instruments at accurately predicting moisture contents of three subgrade soils (loam, silt, silty/clay) commonly used in Minnesota roadway construction projects. The four instruments were; DOT600 (moisture content), WP4C dewpoint potentiometer (matric suction), the Button Heat Pulse Sensor (BHPS) (temperature rise vs. moisture content), and an exudation pressure test device. The DOT600 showed a strong correlation between the output period (measured in micro-seconds) and volumetric water content. The WP4C did not accurately measure matric suction for any of the loam, silt or silt/clay soils at suctions below 250 kPa. Published data shows that the matric suction of soils compacted at optimum moisture content is usually in the range of 200 - 300 kPa. The BHPS showed a strong correlation between measured temperature rise and water content but in its current configuration is not rigorous enough to withstand field conditions. The exudation pressure device was applied to soils compacted in a AASHTO T99 mold at various moisture contents. Water was exuded from the packed samples at pressures between 100 and 500 psi corresponding to AASHTO-T99 moisture contents of 10 to 25%. Accurate moisture content readings from any of these instruments may not be as important as a more precise and simple calibration between the measurement units of the instrument and the optimum moisture content determined from the AASHTO T99 test.
Download or read book Fundamentals of Soil Physics written by Daniel Hillel and published by Academic Press. This book was released on 2013-10-22 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is not, in any case, in total defiance of the Wise Old Man's admonition, for it is not an entirely new book. Rather, it is an outgrowth of a previous treatise, written a decade ago, entitled "Soil and Water: Physical Principles and Processes." Though that book was well enough received at the time, the passage of the years has inevitably made it necessary to either revise and update the same book, or to supplant it with a fresh approach in the form of a new book which might incorporate still-pertient aspects of its predecessor without necessarily being limited to the older book's format or point of view.
Download or read book Compaction of Soils and Granular Materials written by Anthony William Parsons and published by Stationery Office Books (TSO). This book was released on 1992 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compaction of Soils and Granular Materials
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 Compaction Tests on Gravelly Soils with Cohesive Soil Matrix written by Robert W. Cunny and published by . This book was released on 1964 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of ES 521-A, 'Effect of Maximum Particle Size, Triaxial Compression and Compaction Tests, ' compaction tests were performed on a gravelly material with cohesive binder to determine the effect of large-size particles on maximum dry density and optimum water content and to obtain data for use in preparing the triaxial specimens. The effect of mold diameter and the effect of scalping both with and without replacement for oversize material were also investigated.
Download or read book Soil Compaction Investigation written by Waterways Experiment Station (U.S.) and published by . This book was released on 1949 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Linear Genetic Programming written by Markus F. Brameier and published by Springer Science & Business Media. This book was released on 2007-02-25 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Linear Genetic Programming presents a variant of Genetic Programming that evolves imperative computer programs as linear sequences of instructions, in contrast to the more traditional functional expressions or syntax trees. Typical GP phenomena, such as non-effective code, neutral variations, and code growth are investigated from the perspective of linear GP. This book serves as a reference for researchers; it includes sufficient introductory material for students and newcomers to the field.
Download or read book Field Compaction Tests with Impact Compactor written by Waterways Experiment Station (U.S.) and published by . This book was released on 1955 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compaction and Correlation Between Compaction and Classification Data written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1962 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Compaction Investigation written by Waterways Experiment Station (U.S.) and published by . This book was released on 1949 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Construction Quality Control Testing of Compacted Fills written by R. Scavuzzo and published by . This book was released on 2000 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Construction quality control testing is critical in ensuring that compacted fills are properly placed. One element in the successful implementation of compacted fill placement is the appropriate assignment of optimum moisture-density values for varying fill material types encountered during construction. For decades the U.S. Bureau of Reclamation (USBR) has acquired laboratory moisture-density test data for a variety of material types from the 17 western states in which the USBR operates. A comparison between optimum moisture-density data published by the USBR is made with laboratory test results obtained from years of quality control testing of compacted fills on commercial projects throughout the Denver-Metro area. Optimum moisture content-maximum dry density curves are presented which provide a visual representation of the variability in the data which can be anticipated for each soil type evaluated. This data provides confirmation of the USBR database and can be used in estimating appropriate moisture content-dry density values, evaluating the validity of laboratory compaction test results obtained, as well as assessing the state of compaction of in-place fill material.
Download or read book Soil Compaction and Proof rolling of Subgrades written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1960 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper 1: The object of this paper is to give a brief outline of the test installation and techniques employed at the road research laboratory in carrying out the full-scale compaction tests and to give a summary of the main results obtained in the investigations. Paper 2 shows the cases where proof-rolling will be effective and those cases where it will not. Paper 3 deals with the use of flowing water as a compacting and stabilizing agent. Paper 4 presents a new approach to liquid limit determinations by a one-point procedure. Necessary equations, charts and tables, developed on the AASHO road test and easily usable by technicians, are presented.
Download or read book QA QC of Subgrade and Embankment Construction written by Eshan Ganju and published by . This book was released on 2015-09-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Dynamic Cone Penetrometer (DCP) is a device that is used for the estimation of in situ compaction quality of constructed subgrades and embankments. It is a relatively inexpensive, light-weight and easy to use device that measures the dynamic penetration resistance of the compacted soil, from which an estimate of soil strength and stiffness characteristics can be made. Owing to its ease of use, many DOTs in the U.S. have employed the DCP in their compaction quality control procedures, and over the past few decades, extensive research has been carried out on the development of correlations between the results of the DCP test and the results of strength and stiffness tests performed on compacted soils (e.g., California bearing ratio, and resilient modulus)The objectives of this research are to refine DCP-based quality assurance and quality control correlations for compaction quality control developed by previous research studies carried out at Purdue for the Indiana Department of Transportation, especially focusing on (1) grouping of the soils based on their mechanical response to the DCP loading, and (2) limiting the in situ moisture range of the soils used for development of correlations within -2% of the optimum moisture content of the tested soil. The factors outlined above are studied, and in particular, soil grouping is examined critically. The AASHTO ('A-based') classification employed previously for classification of soils is replaced with a new classification criteria specifically developed for the DCP test. Soils are grouped into one of the two categories of coarse-grained or fine-grained soils on the basis of the size of the dominant particle in the soil. The criteria developed for the classification of soil into one of these two categories is based on index properties of the soil, such as the standard Proctor maximum dry density, optimum moisture content, plasticity index (PI) and fines content.
Download or read book Handbook of Geotechnical Investigation and Design Tables written by Burt G. Look and published by CRC Press. This book was released on 2017-06-29 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical handbook of properties for soils and rock contains in a concise tabular format the key issues relevant to geotechnical investigations, assessments and designs in common practice. There are brief notes on the application of the tables. These data tables are compiled for experienced geotechnical professionals who require a reference do
