Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation Of The Influence Of Geogrid Reinforcement On Stiffness In Compacted Base Course Material
Download Evaluation Of The Influence Of Geogrid Reinforcement On Stiffness In Compacted Base Course Material full books in PDF, epub, and Kindle. Read online Evaluation Of The Influence Of Geogrid Reinforcement On Stiffness In Compacted Base Course Material ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation of the Influence of Geogrid Reinforcement on Stiffness in Compacted Base Course Material by : Craig Schuettpelz
Download or read book Evaluation of the Influence of Geogrid Reinforcement on Stiffness in Compacted Base Course Material written by Craig Schuettpelz and published by . This book was released on 2008 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Base/subgrade Soil Under Repeated Loading by : Murad Yusuf Abu-Farsakh
Download or read book Evaluation of the Base/subgrade Soil Under Repeated Loading written by Murad Yusuf Abu-Farsakh and published by . This book was released on 2009 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Examination of the Use of Geogrid as a Compaction Aid by :
Download or read book An Examination of the Use of Geogrid as a Compaction Aid written by and published by . This book was released on 2000 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence from experimental and field applications suggest that the presence of geogrid in highway base course increases the ability of a granular material to compact. The addition of a geogrid into an aggregate base layer may decrease the lateral spreading of the base material as compaction effort is applied, leading to a greater potential for the base course to compact vertically. The hypothesis being examined is that given an equal amount of compactive effort, geogrid reinforced base course material can achieve a greater density than non-reinforced base course. This hypothesis was evaluated by the construction of test sections with and without geogrid, compaction of these test sections using small field-scale equipment, and measurement of density and void ratio by various means. The effects of varying lift thicknesses and compactive efforts were also evaluated. Changes in density were recorded with a nuclear densometer. A Dynamic Cone Penetrometer (DCP) was also used to indicate relative density of the base course. The third procedure for evaluating density and void ratio versus depth was accomplished via computer aided tomography (CAT). CAT combines ordinary X-ray technology with sophisticated computer signal processing and delivers digital images capable of being analyzed with selected software. The software was then used to calculate a series of void ratios for soil samples taken from the reinforced and non-reinforced sections. An average void ratio for each section was then computed and the results for each reinforced and non-reinforced section compared. Based upon review of density results and DCP measurements, there does not seem to be a clear indication that geogrid reinforced base course material achieves a greater density than non-reinforced material given the same amount of compactive effort. The void ratios obtained via CAT scan analysis do show a better distinction between the two configurations.
Book Synopsis Large Scale Model Experiments of Recycled Base Course Materials Stabilized with Cement and Cement Kiln Dust by : Brian R. Kootstra
Download or read book Large Scale Model Experiments of Recycled Base Course Materials Stabilized with Cement and Cement Kiln Dust written by Brian R. Kootstra and published by . This book was released on 2009 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quality Assessment of Geogrids Used for Subgrade Treatment by : Min Sang Lee
Download or read book Quality Assessment of Geogrids Used for Subgrade Treatment written by Min Sang Lee and published by Purdue University Press. This book was released on 2012-12-31 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geogrid reinforcements have been used by the Indiana Department of Transportation (INDOT) to construct stable subgrade foundations and to provide a working platform for construction over weak and soft soils. Use of geogrid reinforcement in a pavement system ensures a long-lasting pavement structure by reducing excessive deformation and cracking. The main objectives of this research were to evaluate the mechanical interaction between a subgrade soil and an aggregate base layer with and without a geogrid in place at the interface. A series of large-scale direct shear tests were performed to investigate the effects of geogrid properties, such as geogrid aperture area, junction strength, and tensile strength, on the interface shear strength of soil-geogrid-aggregate systems. The test results showed that the aperture size and junction strength of the geogrids were relatively important factors affecting the overall interface shear strength the most. The average values for the peak interface shear strength coefficient for the three normal stresses (50 kPa, 100 kPa and 200 kPa) considered in this study ranged from 0.96 to 1.48. In addition, the test results showed that the average peak interface shear strength coefficient increases with increases in the junction strength of the geogrid. The optimum aperture area of the geogrid was found to be equal to 825 mm2 (1.4 in2) for the subgrade soil and aggregate considered in this study. There was no significant correlation between the geogrid tensile strength at 2% strain and the average peak interface shear strength coefficient. The effect of the moisture content of the subgrade soil on the peak interface shear strength coefficient was also investigated. The peak interface shear strength coefficient for the subgrade soil sample prepared at the optimum moisture content and compacted to relative compaction values of 94-96 % (Rsoil = 95-96% and Raggregate = 94-95%) and tested under a normal stress of 100 kPa was 20% less than that for the subgrade soil sample prepared at a moisture content 4% above the optimum moisture content. Based on the results of the tests performed in this study, an aperture area requirement of 825 mm2 (1.4 in2) and a junction strength requirement of 11.5 kN/m (788 lb/ft) were suggested as preliminary guidelines for subgrade reinforcement systems. These requirements are only limited to the use of Type IV geogrid (INDOT specification 207.04) for subgrade reinforcement with aggregate No. 53.
Book Synopsis Development of Testing Methods to Determine Interaction of Geogrid-reinforced Granular Material for Mechanistic Pavement Analysis by : Tuncer B. Edil
Download or read book Development of Testing Methods to Determine Interaction of Geogrid-reinforced Granular Material for Mechanistic Pavement Analysis written by Tuncer B. Edil and published by . This book was released on 2009 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geogrid Reinforced Aggregate Base Stiffness for Mechanistic Pavement Design by : John Siekmeier
Download or read book Geogrid Reinforced Aggregate Base Stiffness for Mechanistic Pavement Design written by John Siekmeier and published by . This book was released on 2016 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pavement design package created by Itasca extends the capabilities of PFC3D to support triaxial testing of a synthetic unsaturated aggregate base containing geogrid. The geogrid provides lateral restraint to the aggregate base as a result of interlocking and friction between the geogrid and the aggregate particles. The macroscopic system properties are affected by the microstructural system properties. Therefore, the modeled system was used to study and quantify the effect of microstructural properties on the macroscopic properties, which include the stress-strain curves produced during triaxial tests at different confinements. The microstructural properties of the aggregate base include: particle size, particle type (density, Young’s modulus, and Poisson’s ratio of each particle; and friction between particles), aggregate base moisture content (suction and gap), and initial aggregate base porosity. The microstructural properties of the geogrid include: geometry (aperture and rib dimensions), Young’s modulus, bond stiffness, and grid-grain interface behavior. The pavement design package provides a mechanistically defensible model for aggregate-geogrid interaction, which was used to improve pavement design by estimating geogrid gain factors for typical geogrid-reinforced aggregate roadways. It is anticipated that a simplified geogrid gain factor adjustment will be trialed during pavement design for projects where geogrid is being considered. As expected, this study concludes that geogrid provides benefit and that this benefit varies during the year. Therefore, it is recommended that the seasonal effects be included during implementation. This would allow the fatigue and rutting to be more accurately estimated over the expected pavement design life.
Book Synopsis Characteristics and Behavior of Geogrid-Reinforced Aggregate Under Cyclic Load by :
Download or read book Characteristics and Behavior of Geogrid-Reinforced Aggregate Under Cyclic Load written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to investigate the behavior of reinforced unpaved structure under cyclic load through laboratory testing, finite element and theoretical analyses. Main focus of research was on such behavior with degradation of aggregate base layer. Fourteen laboratory large-scale cyclic load plate tests were conducted on unpaved structure sections with two base course thicknesses and several geosynthetic reinforcements placed between base layer and subgrade. Results indicated that reinforcement improved stress distribution transferred to the subgrade, and decreased degradation of base course and surface deformation accumulation. Stiffer geogrids showed better stress attenuation effect and reduced plastic surface deformation as compared with lower modulus geogrids. Degradation was related to base layer thickness and base layer/geogrid interaction. The degradation and permanent surface deformation were correlated to geogrid torsional stiffness. Performance of geogrid-reinforced test sections was simulated using the FEM program ABAQUS. FEM results indicated that geogrid reinforcement can provide lateral confinement at the bottom of the base layer by improving interface shear resistance and increasing mean stress at the bottom of the base layer. The effect of geogrid reinforcement was also shown to reduce surface deformation, improve stress distribution on subgrade layer, and reduce strain induced at the bottom of the base layer due to lateral spread. As ABC thickness decreased, or the elastic modulus ratio decreased, the benefit due to geogrid reinforcement becomes more apparent. In general, geogrid with higher tensile modulus and better interface friction coefficient enhanced the reinforcement effects. A new unpaved road design model was developed on the basis of geogrid reinforcement mechanisms, degradation of base course, and mobilization of subgrade bearing capacity. Required base course thicknesses calculated using the proposed method compared favor.
Book Synopsis Journal of Geotechnical Engineering by :
Download or read book Journal of Geotechnical Engineering written by and published by . This book was released on 1996 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Construction of Pavements and Rail Tracks by : Antonio Gomes Correia
Download or read book Design and Construction of Pavements and Rail Tracks written by Antonio Gomes Correia and published by CRC Press. This book was released on 2007-05-24 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Construction of Pavements and Rail Tracks - Geotechnical Aspects and Processed Materials is a compilation of selected contributions produced between 2002 and 2005 by the International Committee TC3 - Geotechnics of Pavements of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE), a committee dedicated to gat
Book Synopsis Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics by : Lin Li
Download or read book Proceedings of GeoShanghai 2018 International Conference: Ground Improvement and Geosynthetics written by Lin Li and published by Springer. This book was released on 2018-05-10 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the eighth volume of the proceedings of the 4th GeoShanghai International Conference that was held on May 27 - 30, 2018. This book, entitled Ground Improvement and Geosynthetics”, presents the latest information on the new technologies and practical applications in various geotechnical engineering projects and advancements on ground improvement and geosynethetics. This volume presents detailed design procedures and examples to demonstrate the applications of the latest ground improvement technologies and innovative geosynethetics in geotechnical engineering. Topics include pile/column technology as foundations, retaining structures, or embankment supports, physical and chemical technologies for soil stabilization and ground improvement, geosynthetic reinforcement for roads, slopes, retaining walls, and foundations. Each of the papers included in this book received at least two positive peer reviews. The editors would like to express their sincerest appreciation to all of the anonymous reviewers all over the world, for their diligent work.
Book Synopsis Designing with Geosynthetics by : Robert M. Koerner
Download or read book Designing with Geosynthetics written by Robert M. Koerner and published by . This book was released on 1990 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geosynthetic materials have entered the mainstream in the professional arena and are no longer considered new construction material. Professionals need to keep up with the nuances of how geosynthetics work. Emphasizes design by function; overviews all types of geosynthetics, with stand-alone units on particular materials. Uses S.I. units for all problems and examples. Expands coverage of containers and tubes in the geotextile chapter. Discusses walls and slope design, including seismic analysis, in the geogrid chapter. Treats wet landfills, agricultural waste, waste stability, and dam waterproofing in the geomembrane chapter. Discusses new products and related performances in the geosynthetic clay liner chapter. Discusses new products and related behavior, including fiber reinforcement and wall drainage, in the geocomposite chapter. Adds a completely new chapter on geofoam. A useful reference for transportation, geotechnical, environmental, and hydraulics professionals and engineers.
Book Synopsis Proceedings of the Indian Geotechnical Conference 2019 by : Satyajit Patel
Download or read book Proceedings of the Indian Geotechnical Conference 2019 written by Satyajit Patel and published by Springer Nature. This book was released on 2021-04-22 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the annual conference of the Indian Geotechnical Society. The conference brings together research and case histories on various aspects of geotechnical and geoenvironmental engineering. The book presents papers on geotechnical applications and case histories, covering topics such as (i) Characterization of Geomaterials and Physical Modelling; (ii) Foundations and Deep Excavations; (iii) Soil Stabilization and Ground Improvement; (iv) Geoenvironmental Engineering and Waste Material Utilization; (v) Soil Dynamics and Earthquake Geotechnical Engineering; (vi) Earth Retaining Structures, Dams and Embankments; (vii) Slope Stability and Landslides; (viii) Transportation Geotechnics; (ix) Geosynthetics Applications; (x) Computational, Analytical and Numerical Modelling; (xi) Rock Engineering, Tunnelling and Underground Constructions; (xii) Forensic Geotechnical Engineering and Case Studies; and (xiii) Others Topics: Behaviour of Unsaturated Soils, Offshore and Marine Geotechnics, Remote Sensing and GIS, Field Investigations, Instrumentation and Monitoring, Retrofitting of Geotechnical Structures, Reliability in Geotechnical Engineering, Geotechnical Education, Codes and Standards, and other relevant topics. The contents of this book are of interest to researchers and practicing engineers alike.
Book Synopsis Advances in Materials and Pavement Prediction by : Eyad Masad
Download or read book Advances in Materials and Pavement Prediction written by Eyad Masad and published by CRC Press. This book was released on 2018-07-16 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Materials and Pavement Performance Prediction contains the papers presented at the International Conference on Advances in Materials and Pavement Performance Prediction (AM3P, Doha, Qatar, 16- 18 April 2018). There has been an increasing emphasis internationally in the design and construction of sustainable pavement systems. Advances in Materials and Pavement Prediction reflects this development highlighting various approaches to predict pavement performance. The contributions discuss links and interactions between material characterization methods, empirical predictions, mechanistic modeling, and statistically-sound calibration and validation methods. There is also emphasis on comparisons between modeling results and observed performance. The topics of the book include (but are not limited to): • Experimental laboratory material characterization • Field measurements and in situ material characterization • Constitutive modeling and simulation • Innovative pavement materials and interface systems • Non-destructive measurement techniques • Surface characterization, tire-surface interaction, pavement noise • Pavement rehabilitation • Case studies Advances in Materials and Pavement Performance Prediction will be of interest to academics and engineers involved in pavement engineering.
Book Synopsis Bearing Capacity of Geogrid-reinforced Granular-base Overlaying Soft Clay by : Chaim Jehuda Poran
Download or read book Bearing Capacity of Geogrid-reinforced Granular-base Overlaying Soft Clay written by Chaim Jehuda Poran and published by . This book was released on 1985 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geology and Geotechnical Properties of Laterite Gravel by : Ellis L. Krinitzsky
Download or read book Geology and Geotechnical Properties of Laterite Gravel written by Ellis L. Krinitzsky and published by . This book was released on 1976 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Evolution of Geotech - 25 Years of Innovation by : Reginald Hammah
Download or read book The Evolution of Geotech - 25 Years of Innovation written by Reginald Hammah and published by CRC Press. This book was released on 2021-11-23 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication includes 82 technical papers presented at Rocscience International Conference (RIC) 2021, held online on April 20 and 21, 2021. Rocscience created this event to bring geotechnical academics, researchers and practitioners together to exchange ideas as part of celebrating 25 years of the company’s existence. The papers in these proceedings were from keynotes, panel discussions and papers, selected after careful review of over 100 technical submissions delivered at RIC 2021. The technical papers were grouped into sessions based on their subject areas. The conference aimed to stimulate discussions that could help the industry work towards overcoming geotechnical engineering limitations today. It also sought to foster creative thinking that will advance the current states of the art and practice. The keynote addresses, panel discussions and technical presentations tried to examine geotechnical problems and situations from fresh perspectives. RIC 2021 hopes that the proceedings will continue to enrich our thinking and contribute to achieving a critical mass of change in our practices and approaches. We look forward to significant improvements in our industry.
