Download or read book Influence of Compaction Energy on Soil Engineering Properties written by Isaac Robert Drew and published by . This book was released on 2005 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strength and deformation parameters of compacted soil are known to be related to soil type and moisture content. However, little attention has been directed towards understanding the influence of compaction energy on these properties. This paper describes laboratory and field studies conducted to evaluate the relationship between soil type, soil moisture content, and compaction energy on seven cohesive soil types. In the lab, specimens were compacted with impact energy at levels of 355, 592 (standard Proctor), 987, 1643, and 2693 kJ/m3 (modified Proctor) over a wide range of moisture contents to determine dry unit weight, unconfined compressive strength and the secant (50 percent strain) stiffness. In total, 175 Proctor tests and 95 unconfined compression tests were performed. At each energy level, a soil was tested at 4 to 5 moisture contents with respect to its standard Proctor moisture range. In addition, 54 consolidated undrained triaxial tests were performed at the five energies and four moisture contents for one soil to evaluate changes in effective stress shear strength parameters. This paper summarizes the results of statistical analyses performed on all lab and field tests conducted. The models that best explain variability in dry unit weight, strength, and stiffness are presented. Models are presented individually for each soil type and also inclusive of all soils grouped together. Independent variables used in the modeling include compaction energy, moisture content, confining pressure, Atterberg limits, material passing the No. 200 sieve, and clay fraction. In addition, a new compaction model, derived from a linear rate equation, is presented and checked for validity in estimating soil dry unit weight as a function of compaction energy. Results indicate that compaction energy, combined with moisture content, is a key factor in determining soil strength and stiffness parameters. It is concluded that the strength and stability of a compacted soil cannot be assessed in terms of relative compaction alone. Instead, this research encourages the use of strength and stiffness in the design and construction phases of earthwork operations, being the true functional requirements for compaction specifications.
Download or read book Effect of Compaction Energy on Engineering Characterictics of Compacted Cohesive Soil written by and published by . This book was released on 2010 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnics for Sustainable Infrastructure Development written by Phung Duc Long and published by Springer Nature. This book was released on 2019-11-28 with total page 1417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents 09 keynote and invited lectures and 177 technical papers from the 4th International Conference on Geotechnics for Sustainable Infrastructure Development, held on 28-29 Nov 2019 in Hanoi, Vietnam. The papers come from 35 countries of the five different continents, and are grouped in six conference themes: 1) Deep Foundations; 2) Tunnelling and Underground Spaces; 3) Ground Improvement; 4) Landslide and Erosion; 5) Geotechnical Modelling and Monitoring; and 6) Coastal Foundation Engineering. The keynote lectures are devoted by Prof. Harry Poulos (Australia), Prof. Adam Bezuijen (Belgium), Prof. Delwyn Fredlund (Canada), Prof. Lidija Zdravkovic (UK), Prof. Masaki Kitazume (Japan), and Prof. Mark Randolph (Australia). Four invited lectures are given by Prof. Charles Ng, ISSMGE President, Prof.Eun Chul Shin, ISSMGE Vice-President for Asia, Prof. Norikazu Shimizu (Japan), and Dr.Kenji Mori (Japan).
Download or read book A Rapid Method of Construction Control for Embankments of Cohesive Soil written by Jack W. Hilf and published by . This book was released on 1961 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors that Influence Field Compaction of Soils written by Alfred Walton Johnson and published by . This book was released on 1960 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: An exhaustive review of data on compaction equipment and compaction operations that were available in 1960 are presented. A brief review of the early history of soil compaction and some of the fundamentals of soil mechanics that are applicable to compaction processes are mentioned. Also included are tabulated data on the state highway department specifications for governing compaction requirements and compaction equipment. The most significant aspect is the extensive amount of available data on full- scale field compaction that has been summarized. These data include results from full-scale field tests using 3-wheel power rollers, sheepsfoot-type rollers, pneumatic-tired rollers, vibratory compaction and tamping compactors. For each type of compacting equipment, various factors such as effects on number of passes, effect of weight of roller, depth of compaction, density produced, etc. have been presented. In most cases comparisons between various types of equipment are presented.
Download or read book Smart Geotechnics for Smart Societies written by Askar Zhussupbekov and published by CRC Press. This book was released on 2023-08-04 with total page 4162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Geotechnics for Smart Societies contains the contributions presented at the 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (17th ARC, Astana, Kazakhstan, 14-18 August, 2023). The topics covered include: - Geomaterials for soil improvement - Tunneling and rock engineering - Slope, embankments and dams - Shallow and deep foundations - Soil dynamics and geotechnical earthquake engineering - Geoenvironmental engineering and frost geotechnics - Investigation of foundations of historical structures and monitoring - Offshore, harbor geotechnics and GeoEnergy - Megaprojects and transportation geotechnics Smart Geotechnics for Smart Societies will be of interest to academics and engineers interested or involved in geotechnical engineering.
Download or read book Correlations of Soil and Rock Properties in Geotechnical Engineering written by Jay Ameratunga and published by Springer. This book was released on 2015-12-11 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a one-stop reference to the empirical correlations used extensively in geotechnical engineering. Empirical correlations play a key role in geotechnical engineering designs and analysis. Laboratory and in situ testing of soils can add significant cost to a civil engineering project. By using appropriate empirical correlations, it is possible to derive many design parameters, thus limiting our reliance on these soil tests. The authors have decades of experience in geotechnical engineering, as professional engineers or researchers. The objective of this book is to present a critical evaluation of a wide range of empirical correlations reported in the literature, along with typical values of soil parameters, in the light of their experience and knowledge. This book will be a one-stop-shop for the practising professionals, geotechnical researchers and academics looking for specific correlations for estimating certain geotechnical parameters. The empirical correlations in the forms of equations and charts and typical values are collated from extensive literature review, and from the authors' database.
Download or read book Effect of Compaction on the Consolidation Properties of a Silty clay written by Christopher David Couzens and published by . This book was released on 1957 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Improvement and Ground Modification Methods written by Peter G. Nicholson and published by Butterworth-Heinemann. This book was released on 2014-08-29 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an author with more than 25 years of field and academic experience, Soil Improvement and Ground Modification Methods explains ground improvement technologies for converting marginal soil into soil that will support all types of structures. Soil improvement is the alteration of any property of a soil to improve its engineering performance. Some sort of soil improvement must happen on every construction site. This combined with rapid urbanization and the industrial growth presents a huge dilemma to providing a solid structure at a competitive price. The perfect guide for new or practicing engineers, this reference covers projects involving soil stabilization and soil admixtures, including utilization of industrial waste and by-products, commercially available soil admixtures, conventional soil improvement techniques, and state-of-the-art testing methods. Conventional soil improvement techniques and state-of-the-art testing methods Methods for mitigating or removing the risk of liquefaction in the event of major vibrations Structural elements for stabilization of new or existing construction industrial waste/by-products, commercially available soil Innovative techniques for drainage, filtration, dewatering, stabilization of waste, and contaminant control and removal
Download or read book Ground Improvement written by Professor Jian Chu and published by Elsevier. This book was released on 2005-11-07 with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book of its kind, providing over thirty real-life case studies of ground improvement projects selected by the worlds top experts in ground improvement from around the globe. Volume 3 of the highly regarded Elsevier Geo-engineering book series coordinated by the Series Editor: Professor John A Hudson FREng. An extremely reader friendly chapter format. Discusses wider economical and environmental issues facing scientists in the ground improvement. Ground improvement has been both a science and art, with significant developments observed through ancient history. From the use of straw as blended infill with soils for additional strength during the ancient Roman civilizations, and the use of elephants for compaction of earth dams during the early Asian civilizations, the concepts of reinforced earth with geosynthetics, use of electrokinetics and thermal modifications of soils have come a long way. The use of large and stiff stone columns and subsequent sand drains in the past has now been replaced by quicker to install and more effective prefabricated vertical drains, which have also eliminated the need for more expensive soil improvement methods.The early selection and application of the most appropriate ground improvement techniques can improve considerably not only the design and performance of foundations and earth structures, including embankments, cut slopes, roads, railways and tailings dams, but also result in their cost-effectiveness. Ground improvement works have become increasingly challenging when more and more problematic soils and marginal land have to be utilized for infrastructure development.This edited compilation contains a collection of Chapters from invited experts in various areas of ground improvement, who have illustrated the basic concepts and the applications of different ground improvement techniques using real projects that they have been involved in. The case histories from many countries ranging from Asia, America, Australia and Europe are addressed.
Download or read book Introductory Geotechnical Engineering written by Hsai-Yang Fang and published by CRC Press. This book was released on 2017-12-21 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating and blending traditional theory with particle-energy-field theory, this book provides a framework for the analysis of soil behaviour under varied environmental conditions. This book explains the why and how of geotechnical engineering in an environmental context. Using both SI and Imperial units, the authors cover: rock mechanics soil mechanics and hydrogeology soil properties and classifications and issues relating to contaminated land. Students of civil, geotechnical and environmental engineering and practitioners unfamiliar with the particle-energy-field concept, will find that this book's novel approach helps to clarify the complex theory behind geotechnics.
Download or read book Absorbed Energy and Compacted Cohesive Soil Performance written by Z. Zhang and published by . This book was released on 2005 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical note proposes a new concept of absorbed energy that is related to the soil structural formation for unsaturated cohesive soils. Results from limited preliminary laboratory tests indicate that such energy correlates reasonably well with unconfined compressive strength of soils, and it can be predicted by moisture content and dry unit weight of soils. The relationship between energy and engineering properties of soils can provide a basis to correlate different geotechnical engineering behaviors that have customarily been individually studied. Consequently, a new approach to interpret some traditional processes in geotechnical engineering, such as fill compaction and strength deterioration due to seasonal variation of moisture content, is suggested from the perspective of energy concept.
Download or read book The influence of grading and the energy of compaction on density and strength of soil cement mixes written by Saiyid Nazir Ahmad and published by . This book was released on 1959 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Expansive Soils written by Amer Ali Al-Rawas and published by Taylor & Francis. This book was released on 2006-06-08 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expansive Soils provides the reader with easy and specific access to problems associated with expansive soils, characterisitics and treatment, and evaluation and remediation. Set up with contributions from worlwide expert, this main reference guide is intended for engineers, researchers and senior students working on soil
Download or read book Engineering Geology for Society and Territory Volume 2 written by Giorgio Lollino and published by Springer. This book was released on 2014-09-16 with total page 2016 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is one out of 8 IAEG XII Congress volumes, and deals with Landslide processes, including: field data and monitoring techniques, prediction and forecasting of landslide occurrence, regional landslide inventories and dating studies, modeling of slope instabilities and secondary hazards (e.g. impulse waves and landslide-induced tsunamis, landslide dam failures and breaching), hazard and risk assessment, earthquake and rainfall induced landslides, instabilities of volcanic edifices, remedial works and mitigation measures, development of innovative stabilization techniques and applicability to specific engineering geological conditions, use of geophysical techniques for landslide characterization and investigation of triggering mechanisms. Focuses is given to innovative techniques, well documented case studies in different environments, critical components of engineering geological and geotechnical investigations, hydrological and hydrogeological investigations, remote sensing and geophysical techniques, modeling of triggering, collapse, run out and landslide reactivation, geotechnical design and construction procedures in landslide zones, interaction of landslides with structures and infrastructures and possibility of domino effects. The Engineering Geology for Society and Territory volumes of the IAEG XII Congress held in Torino from September 15-19, 2014, analyze the dynamic role of engineering geology in our changing world and build on the four main themes of the congress: environment, processes, issues, and approaches. The congress topics and subject areas of the 8 IAEG XII Congress volumes are: Climate Change and Engineering Geology. Landslide Processes. River Basins, Reservoir Sedimentation and Water Resources. Marine and Coastal Processes. Urban Geology, Sustainable Planning and Landscape Exploitation. Applied Geology for Major Engineering Projects. Education, Professional Ethics and Public Recognition of Engineering Geology. Preservation of Cultural Heritage.
Download or read book Electrical Measuring Instruments and Measurements written by S.C. Bhargava and published by CRC Press. This book was released on 2012-12-27 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, written for the benefit of engineering students and practicing engineers alike, is the culmination of the author's four decades of experience related to the subject of electrical measurements, comprising nearly 30 years of experimental research and more than 15 years of teaching at several engineering institutions. The unique feature of this book, apart from covering the syllabi of various universities, is the style of presentation of all important aspects and features of electrical measurements, with neatly and clearly drawn figures, diagrams and colour and b/w photos that illustrate details of instruments among other things, making the text easy to follow and comprehend. Enhancing the chapters are interspersed explanatory comments and, where necessary, footnotes to help better understanding of the chapter contents. Also, each chapter begins with a "recall" to link the subject matter with the related science or phenomenon and fundamental background. The first few chapters of the book comprise "Units, Dimensions and Standards"; "Electricity, Magnetism and Electromagnetism" and "Network Analysis". These topics form the basics of electrical measurements and provide a better understanding of the main topics discussed in later chapters. The last two chapters represent valuable assets of the book, and relate to (a) "Magnetic Measurements", describing many unique features not easily available elsewhere, a good study of which is essential for the design and development of most electric equipment – from motors to transformers and alternators, and (b) "Measurement of Non-electrical Quantities", dealing extensively with the measuring techniques of a number of variables that constitute an important requirement of engineering measurement practices. The book is supplemented by ten appendices covering various aspects dealing with the art and science of electrical measurement and of relevance to some of the topics in main chapters. Other useful features of the book include an elaborate chapter-by-chapter list of symbols, worked examples, exercises and quiz questions at the end of each chapter, and extensive authors' and subject index. This book will be of interest to all students taking courses in electrical measurements as a part of a B.Tech. in electrical engineering. Professionals in the field of electrical engineering will also find the book of use.
Download or read book The Influence of Compaction Method Soil Properties and Soil Structure on the Air Permeability of Compacted Cohesive Soils written by John Alan Justice and published by . This book was released on 1966 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
