Download or read book The Effects of Geological Features on Soil Strength written by E. L. Krinitzsky and published by . This book was released on 1970 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray examinations of fine-grained soils from the Lower Mississippi Valley revealed numerous geologic features that are not visible to the unaided eye. These features include significant fracture patterns, details of planar bedding, cross-laminations and turbulence, secondary mineralizations, root penetrations and voids left by roots, the presence of disseminated organic matter and other details. These geologic features affect the strength properties of the soils in which they occur. Experiments with multiple specimens from single samples embodying different features demonstrated that many large variations in strength properties were not only directly dependent of these features but were predictable in a relative sense. Normally, these features are never identified during routine soils testing although the effects of these features contribute to erratic test results. Pretest radiographic examination is a potential means of avoiding these problems. (Author).
Download or read book The Effects of Geological Features on Soil Strength written by E. L. Krinitzsky and published by . This book was released on 1970 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Geologic and Geographic Factors Upon Soil Trafficability written by Parker Davies Trask and published by . This book was released on 1955 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomorphology and Soils written by K.S. Richards and published by Routledge. This book was released on 2020-05-11 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils and sediments influence current processes, preserve evidence of past processes, indicate evolutionary phases in landscapes and provide a basis for relative and absolute chronologies. They provide an important key to the integration of short-term process studies and investigation of longer-term landform evolution. This book, first published in 1985, has been arranged to provide wide temporal and spatial coverage, with studies ranging from historic to geologic time scales and micro- to macro-spatial scales. The interdisciplinary nature of the subject is reflected in contributions from soil scientists, engineering geologists, hydrologists and geomorphologists.
Download or read book Volcanic Rocks and Soils written by Tatiana Rotonda and published by CRC Press. This book was released on 2015-09-03 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volcanic rocks and soils show a peculiar mechanical behaviour at both laboratory and in-situ scale due to their typical structural characters. Volcanic rocks and soils contains keynote lectures and papers from the International Workshop held in Ischia (Italy), 24-25 September 2015. The book deals with recent developments and advancements, as well as case histories, in the geotechnical characterization and engineering applications related to volcanic formations. It covers a variety of themes, including: • Geotechnical characterization under both static and cyclic/dynamic loading conditions, with special regard to structural properties at different scales (microstructural features; field and laboratory characterization; construction materials); • Geotechnical aspects of natural hazards (slope stability; seismic risk); • Geotechnical problems of engineering structures (foundations; embankments; excavations and tunnels). Volcanic Rocks and Soils is of interest to scientists and practitioners in the fields of rock and soil mechanics, geotechnical engineering, engineering geology and geology.
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1973 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study on Effects of Deterioration of Grains on Deformation and Strength Characteristics of Soils written by Mubashir Aziz and published by GRIN Verlag. This book was released on 2011-09-07 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2010 in the subject Engineering - Geotechnology, , course: Civil Engineering, language: English, abstract: With growing infrastructure developments in hilly areas and due to economical constraints of using locally available rockfill materials for construction of embankments, practicing engineers must be acquainted with geotechnical response of non-conventional granular soils. These materials are most likely to disintegrate with time due to physical and chemical weathering. In general, the laboratory investigations on durability characteristics of such materials are only made through simple slaking tests. However, studies examining the effects of slaking-induced disintegration of soil grains on the geotechnical engineering analysis and design parameters are rather limited. This is essentially due to the reason that the grains of standard laboratory sands are mostly durable and hence, the stress-strain response is considered to be unaffected by the presence of water. In order to explore the possible effects of deterioration of soil grains on static and dynamic properties of granular soils, a series of consolidated drained torsional shear tests on various crushed soft rocks were performed under saturated and dry conditions and compared with a well reported Toyoura silica sand consisting of durable grains. Due to the sensitivity of crushed rockfill to deteriorate upon water-submergence, test under dry conditions represented the response of a soil with intact grains, whereas a similar test under saturated condition simulated the potential reduction in strength and stiffness of the soil with time. From the grain size distributions determined after each test, a degradation index was defined to quantify the degree of disintegration of grains. Strength and deformation properties determined from monotonic as well as cyclic shear tests were then compared with this index. Possible correlations of water-induced deterioration of soil grains with consolidation behaviour, peak shear strengths, friction angles, dynamic shear stiffness, and volume-change characteristics during shearing were explored. In addition, the effects of confining stress and shear strain level on particle breakage were also investigated. It was concluded that time-dependent characterization of rockfill materials by monitoring the degree of deterioration can be helpful to avoid catastrophic geotechnical failures. Nonetheless, this study is a caution to conventional soil mechanics in which decay of grains and loss of soil strength with time are often uncared.
Download or read book Ground Movements and Their Effects on Structures written by P. B. Attewell and published by Chapman & Hall. This book was released on 1984 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering written by A. Anagnostopoulos and published by IOS Press. This book was released on 2013-03-21 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains the papers presented at the 15th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE), held in Athens, Greece. Considerable progress has been made in recent decades in understanding the engineering behavior of those hard soils and weak rocks that clearly fall into either the field of soil or of rock mechanics, and there have been important developments in design and construction methods to cope with them. Progress would be even more desirable, however, for those materials which fall into the ‘grey’ area between soils and rocks. They present particular challenges due to their diversity, the difficulties and problems arising in their identification and classification, their sampling and testing and in the establishment of suitable models to adequately describe their behavior. The publication aims to provide an updated overview of the existing worldwide knowledge of the geological features, engineering properties and behavior of such hard soils and weak rocks, with particular reference to the design and construction methods and problems associated with these materials. Part 4 was published post-conference and includes Conference Reports.
Download or read book Report No FHWA RD written by United States. Federal Highway Administration. Offices of Research and Development and published by . This book was released on 1974 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of the In situ State of Stress in Soil Masses written by IIT Research Institute and published by . This book was released on 1974 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mass behavior of soil and the loadings imparted to civil engineering works by soil masses are strongly influenced by the naturally existing in-situ soil stresses. The determination of in-situ stresses in soil masses is a difficult problem which, in some cases, requires extensive and subtle evaluation if even an approximate determination is to be made. These studies were conducted to review and assess techniques. Methods for estimating in-situ stress from a knowledge of the soil and assumed stress history, as well as direct measurement methods are identified and described. All known methods for determining in-situ stresses are summarized. Recommendations are made for the development of more sophisticated hardware, transfer and development of fabric analysis technology to soil mechanics, and long range development of magnetic resonance techniques.
Download or read book Effect of Near surface Hydrology on Soil Strength and Mobility written by Jody D. Priddy and published by . This book was released on 2012 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Physics written by A. Kézdi and published by Elsevier. This book was released on 2013-10-22 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Physics: Selected Topics covers the results in the research field of soil physics, soil mechanics, and the behavior of real soils. This book is divided into six chapters and begins with an introduction to the study of the physical characteristics of soil and the complexity of superstructure of soil mechanics. The next chapter deals with the distribution of coarse grains according to their volume and the distribution of pore sizes in fine-grained materials. This chapter also describes the properties of granular mixtures and the compatibility of transition soils. The discussion then shifts to investigation of soil strength, particularly the strength of sand and transition soils, the tensile and shear strengths of cohesive soils, and brittle failure of soils. The remaining chapters consider the classification of soil phase movement phenomena. This book is intended primarily for practicing civil engineers.
Download or read book Physical Geology written by Steven Earle and published by . This book was released on 2016-08-12 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a discount Black and white version. Some images may be unclear, please see BCCampus website for the digital version.This book was born out of a 2014 meeting of earth science educators representing most of the universities and colleges in British Columbia, and nurtured by a widely shared frustration that many students are not thriving in courses because textbooks have become too expensive for them to buy. But the real inspiration comes from a fascination for the spectacular geology of western Canada and the many decades that the author spent exploring this region along with colleagues, students, family, and friends. My goal has been to provide an accessible and comprehensive guide to the important topics of geology, richly illustrated with examples from western Canada. Although this text is intended to complement a typical first-year course in physical geology, its contents could be applied to numerous other related courses.
Download or read book The Influence of Geology and Physical Properties on the Strength Characteristics of Lateritic Gravels for Road Pavements written by Joseph W. S. de Graft-Johnson and published by . This book was released on 1971 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology for Engineers and Environmental Scientists written by Alan E. Kehew and published by Waveland Press. This book was released on 2021-12-29 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth edition of Geology for Engineers and Environmental Scientists provides students with a basic foundation in the principles of geology, along with an illustration of how engineers must design and build their projects with natural geologic materials and protect them from potentially hazardous geologic processes. Kehew introduces engineering topics including soil and rock mechanics with a quantitative approach that will give students a head start in more advanced engineering courses. The book is prefaced with a discussion of engineering and environmental challenges that our society must face in the current century, such as population growth, scarcity of water and mineral resources, transition to renewable energy, and effects of climate change. Numerous examples of engineering and environmental applications ranging from short descriptions to extensive case histories, such as the “Big Dig” in Boston to the effects of Hurricane Katrina and reconstruction afterward, are included in every chapter. A full chapter is devoted to subsurface contamination and cleanup technologies. For the first time, a large color insert will highlight geological features in the field.
Download or read book Geotechnology written by A. Roberts and published by Elsevier. This book was released on 2014-05-18 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotechnology: An Introductory Text for Students and Engineers focuses on the principles, methodologies, approaches, and applications of geotechnology. The publication first elaborates on engineering in earth materials and behavior of earth materials under static load. Discussions focus on rheological properties of earth materials, elastic materials, plane strain, stress, systematic description of geological factors, engineering classification of rocks and rock masses, classification of soils for engineering purposes, and soil and rock mechanics. The text then examines time-dependent behavior of earth materials, failure criteria for soils and rocks, engineering properties of soils, fluids in soils and rocks, and laboratory measurement of load, stress, and strain in earth materials. The manuscript examines the gathering and recording of data on geology, rock structure, and rock classification, application of models to geotechnology, response of earth materials to dynamic loads, and observation of mass deformations in geotechnology. The publication is a vital source of data for students, engineers, and researchers wanting to explore geotechnology.
