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Stabilization Of Existing Subgrades To Improve Constructibility During Interstate Pavement Reconstruction
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Book Synopsis Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Reconstruction by : Joakim G. Laguros
Download or read book Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Reconstruction written by Joakim G. Laguros and published by . This book was released on 1997 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to state department of transportation (DOT) construction, geotechnical, materials, and pavement system design engineers, engineering geologists, and research engineers, and others concerned with the constructibility of new pavements over existing subgrades. The synthesis describes current practice for the stabilization of existing subgrades to improve constructibility during interstate pavement reconstruction. It presents information regarding the methods available to evaluate and improve subgrade conditions for the purpose of meeting the constructibility requirements of a reconstruction project. This report of the Transportation Research Board presents data obtained from a review of the literature and a survey of the state DOTs. The synthesis reports on: subgrade evaluation methods including sampling, laboratory, and in-situ test methods, as well as assessment of existing drainage systems; constructibility factors such as existing and proposed pavement types, available equipment, and cost effectiveness of various subgrade stabilization techniques; methods of subgrade improvement including mechanical and chemical stabilization, use of recycled and waste materials, the use of geosynthetics in reinforcement and drainage applications; and construction methods with an emphasis on innovative approaches such as novel sequencing of construction traffic, use of lightweight equipment, and robotics. In addition, several case histories describing applicable pavement reconstruction projects are presented. Finally, suggestions to possibly improve the practice and the identification of research needs are also presented.
Book Synopsis Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Reconstruction by :
Download or read book Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Reconstruction written by and published by . This book was released on 1997 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This synthesis will be of interest to state department of transportation (DOT) construction, geotechnical, materials, and pavement system design engineers, engineering geologists, and research engineers, and others concerned with the constructibility of new pavements over existing subgrades. The synthesis describes current practice for the stabilization of existing subgrades to improve constructibility during interstate pavement reconstruction. It presents information regarding the methods available to evaluate and improve subgrade conditions for the purpose of meeting the constructibility requirements of a reconstruction project."--Avant-propos.
Book Synopsis Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Construction by :
Download or read book Stabilization of Existing Subgrades to Improve Constructibility During Interstate Pavement Construction written by and published by . This book was released on 1997 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthesis of Highway Practice by : National Cooperative Highway Research Program
Download or read book Synthesis of Highway Practice written by National Cooperative Highway Research Program and published by . This book was released on 1997 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Continuing Project to Synthesize Information on Highway Problems by :
Download or read book Continuing Project to Synthesize Information on Highway Problems written by and published by . This book was released on 2011 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A staff digest of the progress and status of NCHRP Project 20-5, "Synthesis of information related to highway problems," for which the Transportation Research Board is the agency conducting the research."
Book Synopsis Incremental Costs and Performance Benefits of Various Features of Concrete Pavements by : Todd E. Hoerner
Download or read book Incremental Costs and Performance Benefits of Various Features of Concrete Pavements written by Todd E. Hoerner and published by . This book was released on 2004 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Results Digest written by and published by . This book was released on 2014 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications Catalog by : National Research Council (U.S.). Transportation Research Board
Download or read book Publications Catalog written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1998 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Summary of Progress - National Cooperative Highway Research Program by : National Cooperative Highway Research Program
Download or read book Summary of Progress - National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 2009 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Results Digest - National Cooperative Highway Research Program by : National Cooperative Highway Research Program
Download or read book Research Results Digest - National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 2007 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook for Stabilization of Pavement Subgrades and Base Courses with Lime by : Dallas N. Little
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:
Book Synopsis Instrumentation and Field Testing of Deep Subgrade Stabilization by : Brian James Weyer
Download or read book Instrumentation and Field Testing of Deep Subgrade Stabilization written by Brian James Weyer and published by . This book was released on 2012 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: NCDOT routinely and successfully stabilizes pavement subgrades constructed west of Interstate-95. However, the depth of the stabilized subgrade has been limited to 7 inches for cement stabilization and 8 inches for lime stabilization. With new technology and machinery, deeper depths of stabilization are now feasible. Two full scale test sections were constructed on an NCDOT roadway project in Catawba County, North Carolina utilizing thicker layers of chemically stabilized subbases. The first test section utilized lime as the stabilizing agent while the second test section utilized cement. Each test section was broken down into four subsections; two subsections were stabilized to current NCDOT standard depths, one deep subsection to one and half times current standard depths and the other deep subsection to twice the current NCDOT standard depths. Each of the eight sections were instrumented with two pressure cells, one in the subgrade (below the stabilized layer) and one directly above the stabilized layer, while temperature and moisture sensors were installed in the subgrade layer only. Unconfined compression (UCS) testing was completed on field stabilized samples to determine the effectiveness of each stabilizing agent. Dynamic Cone Penetrometer (DCP) and Falling Weight Deflectometer (FWD) tests were performed at selected locations within each test section to determine the strengths (stiffness and modulus values) of each stabilized layer. DCP data was analyzed using multiple correlations developed from past research while the FWD data was analyzed using both ELMOD and EVERCALC backcalculation software. Analysis of the FWD data using the NCDOT composite modulus approach, found that the effective structural number (SN) values of the deep stabilized test sections are at the minimum 1.2 - 1.5 times those of the test sections stabilized to NCDOT current standard thicknesses. Further analysis of the data indicated that the sections with the current NCDOT standard thicknesses will require an additional HMA thickness of 0.5 - 1.0 inch at the least to attain equivalent structural number values of the deep stabilized subgrade sections. Further analysis is required to implement this finding in the new DARWin-ME. Based on the analysis of the FWD data and the pressure cell response data, the additional thickness of stabilized subbase does provide a significant increase in structural strength to the overall pavement structure. A cost benefit analysis and construction cost savings analysis were performed to provide a monetary value to deep subgrade stabilization. Based on the cost benefit and construction cost savings analyses, the use of deep stabilization does not provide a significant cost benefit or upfront savings on construction costs for neither lime or cement stabilization. This analysis was limited to only the one constructed test section and due to the possible change in cost deep stabilization construction and the possible increase in cost of materials, a benefit may still be possible in the future construction.
Book Synopsis Concrete Pavement Preservation Workshop by : Kurt D. Smith
Download or read book Concrete Pavement Preservation Workshop written by Kurt D. Smith and published by . This book was released on 2008 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document serves as the Reference Manual for the 1 1/2 -day FHWA workshop on concrete pavement preservation. The purpose of the document is to provide the most up-to-date information available on the design, construction, and selection of cost-effective concrete pavement preservation strategies. It concentrates primarily on strategies and methods that are applicable at the project level, and not at the network level, where pavement management activities function and address such issues as prioritizing and budgeting. Detailed information is presented on seven specific concrete pavement preservation treatments: slab stabilization, partial-depth repairs, full-depth repairs, retrofitted edge drains, load transfer restoration, diamond grinding, and joint resealing. In addition, information is provided on pavement evaluation techniques and strategy selection procedures.
Book Synopsis Progress Report by : National Cooperative Highway Research Program
Download or read book Progress Report written by National Cooperative Highway Research Program and published by . This book was released on 2002 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Subgrade Stabilization and Slab Undersealing Solutions of PCC Pavements Restoration and Repairs by : Ali Behnood
Download or read book Development of Subgrade Stabilization and Slab Undersealing Solutions of PCC Pavements Restoration and Repairs written by Ali Behnood and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Subgrade Stabilization Mechanistic-empirical Properties Evaluation and Implementation by : Aaron S. Budge
Download or read book Subgrade Stabilization Mechanistic-empirical Properties Evaluation and Implementation written by Aaron S. Budge and published by . This book was released on 2012 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The state and many counties throughout Minnesota are using a variety of subgrade stabilization techniques for various materials used in road construction. Such methods appear to improve constructability and lead to increased performance and reduced maintenance. While a number of studies have investigated such stabilization efforts (including materials and techniques, relative increases in strength and/or stiffness, etc.) no overall quantification and summary of the effects of material stabilization have been brought forward with recommendations of parameters to be used for design purposes. Although these techniques and materials are commonly used, minimal information has been obtained relating to the Mechanistic-Empirical (ME) properties of these improved materials such that the more cost-effective designs can be implemented. Not having recommendations for the ME properties of the improved materials, the designer is forced to use values for the non-stabilized material. While this does likely lead to extended road life, costs could be greatly reduced by taking advantage of the improved properties of the stabilized roadway materials. This project has involved determining which types of subgrade stabilization are being used, identifying which of these stabilization techniques/materials are of interest to the Minnesota Department of Transportation (MnDOT), compiling the results of past research relating to these stabilization techniques, summarizing the results of past research and proposing a mix design procedure that obtains material properties for use in design. This proposed mix design procedure will allow the designer to account for improved stiffness due to stabilization, reducing costs and improving the efficiency of the design.
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
