Download or read book Contingency Airfield and Road Construction Using Geosynthetic Fiber Stabilization of Sands written by Steve L. Webster and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes laboratory and field tests conducted using a new fiber stabilization technique for sands. Laboratory unconfined compression tests using 2-in. long monofilament polypropylene fibers to stabilize a poorly graded (SP) sand showed an optimum fiber content of 1 percent (by weight). Field test sections were constructed and traffic tested using simulated C-130 aircraft traffic (30,000-lb tire load at 100-psi tire pressure) and military truck traffic (5-ton military cargo truck loaded to a gross weight of 41,600 lb). Test results showed that sand fiber stabilization over a sand subgrade supported over 1,000 passes of a C-130 tire load with less than 2 in. of rutting. The top 4 in. of the sand fiber layer was lightly stabilized with Road Oyl to provide a wearing surface. Based on limited truck traffic tests, an 8-in.-thick sand-fiber layer, surfaced with a spray application of Road Oyl, would support substantial amounts of military truck traffic.
Download or read book Discrete Fiber Reinforcement of Sands for Expedient Road Construction written by Jeb Stuart Tingle and published by . This book was released on 1999 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bearing Capacity Of Roads Volume 2 written by A. Gomes Correia and published by CRC Press. This book was released on 2020-12-18 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an outcome of the sixth conference on bearing capacity of roads and airfield held in Lisbon, Portugal. It covers the following topics: bearing capacity policies, concepts, costs and condition surveys; analysis and modelling; design and environmental effects; and asphalt mixtures.
Download or read book Contingency Airfield Construction written by Randy C. Ahlrich and published by . This book was released on 1994 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents a laboratory study that evaluated the effectiveness of mechanically stabilizing low strength soils with monofilament and fibrillated fibers. The study provides guidance on fiber type, length, and dosage rate to produce stabilized soils for contingency airfield construction. This study included a review of available literature and a two-phase laboratory test program. The basis of this study was to determine the feasibility of using fibers to significantly enhance the strength of low-strength soils. The soil materials used in the laboratory study were a high plasticity clay (CH) and a beach sand (SP). Each soil was tested to determine the optimum moisture content, maximum dry density, soaked and as-molded CBR strengths. The clay and sand materials were then stabilized with monofilament and fibrillated fibers at various lengths and dosages. These stabilized materials were then evaluated with the Corps of Engineers Gyratory Testing Machine to determine gyratory shear strength properties. The stabilized soils that indicated an increase in gyratory shear strength were evaluated with the laboratory CBR procedure to determine the soaked and as-molded CBR strength values. The findings of this study indicated that the monofilament fibers can improve strength values of beach sand and the fibrillated fibers can improve the strength values of a high plasticity clay. This laboratory study also indicated that the CBR test may not evaluate the effectiveness of fiber stabilization. Airfield constant, Fiber reinforcement, Gyratory testing machine, CBR tests, Fibrillated fibers, Mechanical stabilization, Contingency pavements, Gyratory shear strength, Monofilament fibers.
Download or read book Fundamentals of Ground Improvement Engineering written by Jeffrey Evans and published by CRC Press. This book was released on 2021-09-17 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground improvement has been one of the most dynamic and rapidly evolving areas of geotechnical engineering and construction over the past 40 years. The need to develop sites with marginal soils has made ground improvement an increasingly important core component of geotechnical engineering curricula. Fundamentals of Ground Improvement Engineering addresses the most effective and latest cutting-edge techniques for ground improvement. Key ground improvement methods are introduced that provide readers with a thorough understanding of the theory, design principles, and construction approaches that underpin each method. Major topics are compaction, permeation grouting, vibratory methods, soil mixing, stabilization and solidification, cutoff walls, dewatering, consolidation, geosynthetics, jet grouting, ground freezing, compaction grouting, and earth retention. The book is ideal for undergraduate and graduate-level university students, as well as practitioners seeking fundamental background in these techniques. The numerous problems, with worked examples, photographs, schematics, charts and graphs make it an excellent reference and teaching tool.
Download or read book Airfields and Roads Construction Using Fiber Stabilization of Sands written by Rosa L. Santoni and published by . This book was released on 2001 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contingency Airfield Construction written by James E. Shoenberger and published by . This book was released on 1997 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Discrete Fiber Reinforcement of Sands for Expedient Road Construction written by and published by . This book was released on 1999 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes laboratory and field experiments conducted using discrete synthetic fibers to stabilize sands for expedient road construction. Unconfined compression tests were conducted as an index of material performance to identify the effects of fiber type, length, content, denier, and sand type on load-bearing capacity. Field sections consisting of 8-in. fiber-stabilized layers over a sand subgrade (SP) were constructed and trafficked to validate the laboratory results under actual field conditions. Experiment items were trafficked with 10,000 passes of a 41,600-lb 5-ton military truck. Test results showed that fiber-reinforced sand materials are capable of providing structural support to military traffic over sand subgrades. The results revealed optimum stabilization parameters, practical construction technique, and effective maintenance procedures. Design, construction, and maintenance guidance are provided for using fiber-reinforced materials to support substantial amounts of military traffic.
Download or read book Composite Construction in Steel and Concrete VII written by M. A. Bradford and published by . This book was released on 2016 with total page 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 Roads and Airfields written by U.S. Army Engineer School and published by . This book was released on 1951 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects written by United States. Federal Highway Administration and published by . This book was released on 1981 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riprap Design Criteria Recommended Specifications and Quality Control written by Peter Frederick Lagasse and published by Transportation Research Board. This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 568: Riprap Design Criteria, Recommended Specifications, and Quality Control examines design guidelines; recommended material specifications and test methods; recommended construction specifications; and construction, inspection, and quality control guidelines for riprap for a range of applications, including revetment on streams and riverbanks, bridge piers and abutments, and bridge scour countermeasures such as guide banks and spurs.
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Trends in Civil Engineering written by K. K. Pathak and published by Springer Nature. This book was released on 2020-09-27 with total page 1081 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the selected peer-reviewed proceedings of the International Conference on Recent Trends and Innovations in Civil Engineering (ICRTICE 2019). The volume focuses on latest research and advances in the field of civil engineering and materials science such as design and development of new environmental materials, performance testing and verification of smart materials, performance analysis and simulation of steel structures, design and performance optimization of concrete structures, and building materials analysis. The book also covers studies in geotechnical engineering, hydraulic engineering, road and bridge engineering, building services design, engineering management, water resource engineering and renewable energy. The contents of this book will be useful for students, researchers and professionals working in civil engineering.
Download or read book Ground Improvement Third Edition written by Klaus Kirsch and published by CRC Press. This book was released on 2012-11-26 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: When finding another location, redesigning a structure, or removing troublesome ground at a project site are not practical options, prevailing ground conditions must be addressed. Improving the ground—modifying its existing physical properties to enable effective, economic, and safe construction—to achieve appropriate engineering performance is an increasingly successful approach. This third edition of Ground Improvement provides a comprehensive overview of the major ground improvement techniques in use worldwide today. Written by recognized experts who bring a wealth of knowledge and experience to bear on their contributions, the chapters are fully updated with recent developments including advancements in equipment and methods since the last edition. The text provides an overview of the processes and the key geotechnical and design considerations as well as equipment needed for successful execution. The methods described are well illustrated with relevant case histories and include the following approaches: Densification using deep vibro techniques or dynamic compaction Consolidation employing deep fabricated drains and associated methods Injection techniques, such as permeation and jet grouting, soil fracture grouting, and compaction grouting New in-situ soil mixing processes, including trench-mixing TRD and panel-mixing CSM approaches The introductory chapter touches on the historical development, health and safety, greenhouse gas emissions, and two less common techniques: blasting and the only reversible process, ground freezing. This practical and established guide provides readers with a solid basis for understanding and further study of the most widely used processes for ground improvement. It is particularly relevant for civil and geotechnical engineers as well as contractors involved in piling and ground engineering of any kind. It would also be useful for advanced graduate and postgraduate civil engineering and geotechnical students.
Download or read book Operation Dragon Comeback written by Bruce A. Ashcroft and published by Department of the Air Force. This book was released on 2006 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tells the story of the men and woman of Air Education and Training Command (AETC) who rushed to the aid of their wingmen at Kessler Air Force Base and to their countrymen in need.
