Download or read book Laboratory Evaluation of Poor Subgrade Modified Using Lime written by Pamela Najjar and published by . This book was released on 2019 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subgrade of a pavement system deteriorates and sub sequentially reaches its failure due to an excess amount in water moisture, load fatigue, aging, and temperature variations affecting the material used in the system. Road success lies in the strengthening of its foundation, also known as the subgrade material, by the addition of chemical additives. The effectiveness of using mixtures of lime in poor soil stabilization was investigated by mean of laboratory testing to evaluate the California Bearing Ratio (CBR) value. In this study, two weak soil types were extracted from two construction sites in Tripoli, Lebanon in order to evaluate the modifications of the physical properties of these subgrade materials with the aim of strengthening by means of laboratory modification using local materials. A chemical reaction between the lime and clayey fraction is supposed to take place leading to higher strength and lower plasticity. The laboratory testing done in this study was to determine the physical properties of poor subgrade material stabilized with lime. These tests include Particle Size Distribution, Specific Gravity, Atterberg Limit, Moisture Content, Compaction Characteristic and Natural Moisture Content. For Soil Type 1 the best results were from an addition of 6% lime while as for Soil Type 2, 5% and 6% of lime yielded the best results. The results of this study show an improvement in the mechanical properties of the soil type 1 and soil type 2 but not enough to be used as approved sub-grade material in Lebanon. As a result, lime stabilization technique can be used to enhance poor subgrades. Furthermore, this can be an approach for solving disposal problems and moving towards a green environment.
Download or read book Field Investigation of Subgrade Lime Modification written by Chulmin Jung and published by Purdue University Press. This book was released on 2009-11-15 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This field study investigates the degree of uniformity and quality that is obtained with soil modification with LKD (Lime Kiln Dust) using current construction techniques, and explores changes in construction methods that may result in a better product.
Download or read book Subgrade Stabilization with Portland Cement and Hydrated Lime Under Modified T11 Landing Mat written by William N. Brabston and published by . This book was released on 1966 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Evaluation of Soil lime Mixtures written by United States. Department of Commerce and published by . This book was released on 1962 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook for Stabilization of Pavement Subgrades and Base Courses with Lime written by Dallas N. Little and published by . This book was released on 1995 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Laboratory Evaluation of Lime Stabilized Soils for Field Performance written by M. C. Anday and published by . This book was released on 1962 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research Abstracts written by and published by . This book was released on 1994 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lime Stabilization written by and published by Transportation Research Board National Research. This book was released on 1987 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years, various forms of lime, including products with varying degrees of purity, have been utilized successfully as soil stablizing agents. The state of the art in lime treatment based on a comprehensive analysis of current practice and technical literature is presented in this report. References are included for more information.
Download or read book Bearing Capacity of Roads Railways and Airfields written by Andreas Loizos and published by CRC Press. This book was released on 2017-07-20 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearing Capacity of Roads, Railways and Airfields includes the contributions to the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017, 28-30 June 2017, Athens, Greece). The papers cover aspects related to materials, laboratory testing, design, construction, maintenance and management systems of transport infrastructure, and focus on roads, railways and airfields. Additional aspects that concern new materials and characterization, alternative rehabilitation techniques, technological advances as well as pavement and railway track substructure sustainability are included. The contributions discuss new concepts and innovative solutions, and are concentrated but not limited on the following topics: · Unbound aggregate materials and soil properties · Bound materials characteritics, mechanical properties and testing · Effect of traffic loading · In-situ measurements techniques and monitoring · Structural evaluation · Pavement serviceability condition · Rehabilitation and maintenance issues · Geophysical assessment · Stabilization and reinforcement · Performance modeling · Environmental challenges · Life cycle assessment and sustainability Bearing Capacity of Roads, Railways and Airfields is essential reading for academics and professionals involved or interested in transport infrastructure systems, in particular roads, railways and airfields.
Download or read book Lime Stabilisation written by C. D. F. Rogers and published by Thomas Telford. This book was released on 1996 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been compiled to meet the increased need for knowledge on alternative ground improvement techniques using lime. It brings together expertise and experience from industry and academia to provide and overview of lime stabilisation.
Download or read book A Laboratory Study of Lime Stabilized Clayey Subgrade Under Static and Repeated Loads written by Samuel Francis Kwaku and published by . This book was released on 1964 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Evaluation of Soil Modification Mixing Procedures written by Robert L. Parsons and published by . This book was released on 2001 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lime is routinely used as a soil modification agent in Kansas to improve the performance of subgrade soils with the primary goal of reducing volume change. Effective mixing of lime and soil is critical to ensuring that the expected improvements occur throughout the soil mass. The results are presented herein on the effectiveness of current soil-lime mixing and construction procedures for five soils treated with powdered quicklime or lime slurry. A series of tests was performed on each soil as part of the evaluation process. Test procedures included field density determination, dynamic cone penetrometer, unconfined compression, lime content, pH, Atterberg limits, swell testing, and determination of the maximum unit weights and optimum moisture contents for the native soil and lime treated soil. The effect of significantly reducing the mellowing period for ease of construction was evaluated and determined to negatively affect subgrade compaction and strength due to high water contents remaining from the mixing process. Additionally, the results of the testing showed that two passes with a rotary mixer were sufficient to effectively pulverize and mix the soil and lime to achieve modification. However, the results also suggested that there was the potential for additional strength gains with additional mixing. The consistency of lime distribution on a larger scale was also evaluated and determined to be adequate at the locations observed, although there was some evidence that the mixing of soil with lime in a slurry form appeared to yield a more consistent final product than mixing with powdered quicklime. Several recommendations were proposed for consideration by the Kansas Department of Transportation for soil modification procedures. These included moving from a specified percentage of lime for all projects to a lime percentage based on soil testing. Recommendations also included the introduction of a mellowing period after preliminary mixing to allow the lime more time to react with the soil to break down clay lumps and to give the soil time to dry to a water content closer to optimum. Also proposed for consideration was the adoption of National Lime Association specifications for final mixing, which include the use of AASHTO T-180 as the compaction standard and requiring rotary mixing during the final stage of mixing. Further evaluation of the performance of soils mixed with lime slurry compared with soils mixed with quicklime was recommended to determine if lime slurry yields a significantly better product. Other recommendations proposed for consideration included an evaluation of the benefits of making soil stabilization a goal of soil treatment and taking advantage of the benefits of including the stabilized layer as a component in the pavement design. Construction costs beyond those already incurred for modification should be relatively small and the additional structural benefits could yield significant savings.
Download or read book A Laboratory Evaluation of a Carbide High Calcium Hydrated Lime written by Wisconsin. Division of Highways. Materials Section. Research Unit and published by . This book was released on 1969 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Computer Methods and Geomechanics written by Amit Prashant and published by Springer Nature. This book was released on 2020-01-14 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers from IACMAG Symposium,The major themes covered in this conference are Earthquake Engineering, Ground Improvement and Constitutive Modelling. This volume will be of interest to researchers and practitioners in geotechnical and geomechanical engineering.
Download or read book Proceedings of the 5th International Young Geotechnical Engineers Conference written by IOS Press and published by IOS Press. This book was released on 2013-08-20 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotechnical engineers are at work worldwide, contributing to sustainable living and to the creation of safe, economic and pleasant spaces to live, work and relax. With increased pressure on space and resources, particularly in cities, their expertise becomes ever more important. This book presents the proceedings of the 5th iYGEC, International Young Geotechnical Engineers' Conference, held at Marne-la-Vallée, France, from 31 August to 1 September 2013. It is also the second volume in the series Advances in Soil Mechanics and Geotechnical Engineering. The papers included here cover topics such as laboratory and field testing, geology and groundwater, earthworks, soil behavior, constitutive modeling, ground improvement, earthquake, retaining structures, foundations, slope stability, tunnels and observational methods. The iYGEC conference series brings together students and young people at the start of their career in the geotechnical professions to share their experience, and this book will be of interest to all those whose work involves soil mechanics and geotechnical engineering. The cover shows Dieppe harbour breakwater project, Louis-Alexandre de Cessart, 1776-1777. © École Nationale des Ponts et Chaussées.
Download or read book Ground Improvement Case Histories written by Buddhima Indraratna and published by Butterworth-Heinemann. This book was released on 2015-05-28 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an international group of experts, Ground Improvement Case Histories: Chemical, Electrokinetic, Thermal and Bioengineering Methods provides over 700 pages of case-histories collected from all over the world. Each case-history provides an overview of the specific technology followed by applications, and in some cases, comprehensive back analysis through numerical modelling is discussed. The book includes methods for employing bacterial and biological treatment, and native vegetation for stabilizing problematic soils. Specific case-histories included in the book are: Effect of Drainage and Grouting for the World Longest Seikan Undersea Tunnel Construction, Cement/lime Mixing Ground Improvement for Road Construction on Soft Ground, Use of Jet Grouting in Deep Excavations, and Stabilization of Reactive Sulphide Mine Tailings using Water Cover Technology. - Provides recent case histories using chemical and bio-engineering methods by world-renowned engineering experts - Includes over 200 illustrations and 150 equations from relevant topics, including state-of-the-art chemical and bioengineering methods - Presents comprehensive analysis methods using numerical modelling methods - Case histories include the "Effect of Drainage and Grouting on the World's Longest Seikan Undersea Tunnel Construction" and "Cement/Lime Mixing Ground Improvement for Road Construction on Soft Ground"
