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Reinforced soil structures / by Christopher, Barry R.(Barry Rodney),1949-(CARDINAL)313934; United States.Federal Highway Administration.Offices of Research, Development, and Technology.(CARDINAL)286927; STS Consultants.(CARDINAL)313933;
Includes bibliographical references (pages 278-285).v. 1. Design and construction guidelines --Final report;Sponsored by Office of Engineering and Highway Operations R&D, Federal Highway Administration, under contract no.
Subjects: Technical reports.; Retaining walls; Roads; Soil stabilization.; Soil-structure interaction.;
Available copies: 1 / Total copies: 1
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Durability/corrosion of soil reinforced structures / by Elias, Victor.(CARDINAL)286934; United States.Federal Highway Administration.(CARDINAL)139839; Earth Engineering & Sciences, Inc.(CARDINAL)286932;
Includes bibliographical references (pages 159-163).Final report;Sponsored by Office of Engineering and Highway Operations, R&D, Federal Highway Administration, under contract no.
Subjects: Technical reports.; Soil mechanics.; Soil stabilization; Soil-structure interaction.; Steel, Structural;
Available copies: 1 / Total copies: 1
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Performance test for geosynthetic-reinforced soil including effects of preloading / by Ketchart, Kanop.(CARDINAL)286936; Wu, Jonathan T. H.(CARDINAL)286937; Turner-Fairbank Highway Research Center,issuing body.(CARDINAL)286897;
Includes bibliographical references (pages 264-270).
Subjects: Soil stabilization.; Soil-structure interaction.; Reinforced soils.; Geosynthetics.;
Available copies: 1 / Total copies: 1
On-line resources: http://www.fhwa.dot.gov/publications/research/infrastructure/structures/gtr/01018/01018.pdf -- viewed on 8/27/2014;
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Assessing the long-term performance of mechanically stabilized earth walls / by Gerber, Travis M.(CARDINAL)311646; United States.Federal Highway Administration.(CARDINAL)139839; American Association of State Highway and Transportation Officials.(CARDINAL)138446; National Cooperative Highway Research Program.(CARDINAL)281856; National Research Council (U.S.).Transportation Research Board.(CARDINAL)141287;
Includes bibliographical references (pages 29-30)."Mechanically stabilized earth (MSE) walls are an important class of infrastructure assets whose long-term performance depends on various factors. As with most all other classes of assets, MSE walls need periodic inspection and assessment of performance. To date, some agencies have established MSE wall monitoring programs, whereas others are looking for guidance, tools, and funding to establish their own monitoring programs. The objective of this synthesis project is to determine how transportation agencies monitor, assess, and predict the long-term performance of MSE walls. The information used to develop this synthesis came from a literature review together with a survey and interviews. Of the 52 U.S. and 12 Canadian targeted survey recipients, 39 and five, respectively, responded. This synthesis reveals that unlike bridges and pavements, MSE walls and retaining walls in general are often overlooked as assets. Fewer than one-quarter of state-level transportation agencies in the United States have developed some type of MSE wall inventory beyond that which may be captured as part of their bridge inventories. Fewer still have the methods and means to populate their inventories with data from ongoing inspections from which assessments of wall performance can be made. In the United States, there is no widely used, consistently applied system for managing MSE walls. Wall inventory and monitoring practices vary between agencies. This synthesis examines existing practices concerning the nature, scope, and extent of existing MSE wall inventories. It also examines the collection of MSE wall data, including the types of performance data collected, how they are maintained in wall inventories and databases, the frequency of inventory activities, and assessment practices relevant to reinforcement corrosion and degradation. Later parts of this synthesis discuss how MSE wall performance data are assessed, interpreted, and used in asset management decisions. This synthesis finds that the most well-implemented wall inventory and assessment system in the United States is the Wall Inventory Program developed by FHWA for the National Park Service. However, this system, like some others, uses 'condition narratives' in a process that can be somewhat cumbersome and subjective. Other systems use more direct numeric scales to describe wall conditions, and an advantage of such systems is that they are often compatible with those used in assessments of bridges. As experience with MSE walls accumulates, agencies will likely continue to develop, refine, and better calibrate procedures affecting design, construction, condition assessment, and asset management decisions. One portion of this synthesis is dedicated to summarizing the actions taken thus far by survey respondents to improve the long-term performance of their MSE walls. Many agencies prescribe the use of a pre-approved wall design and/or wall supplier. Other actions or policies frequently focus on drainage-related issues"--Summary.Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration
Subjects: Technical reports.; Reinforced soils.; Retaining walls.; Retaining walls;
Available copies: 1 / Total copies: 1
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Geogrid reinforcement of Piedmont residual soil / by Stadler, Alan T.,1961-(CARDINAL)316829; North Carolina.Department of Transportation.Research and Analysis Group.(CARDINAL)272064;
Includes bibliographical references (pages 143-149).Final report;Sponsored by N.C. Dept. of Transportation, Research and Analysis Group.
Subjects: Technical reports.; Geosynthetics; Retaining walls;
Available copies: 7 / Total copies: 9
On-line resources: https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917; https://digital.ncdcr.gov/documents/detail/3691917;
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Mechanically stabilized earth walls and reinforced soil slopes design and construction guidelines : FHWA demonstration project 82, reinforced soil structures MSEW and RSS / by Elias, Victor.(CARDINAL)286934; Christopher, Barry R.(Barry Rodney),1949-(CARDINAL)313934;
Includes bibliographical references (pages 321-322).Sponsored by Federal Highway Administration, and performed by Earth Engineering & Sciences, Inc., under contract no.
Subjects: Technical reports.; Retaining walls; Slopes (Soil mechanics); Soil stabilization.;
Available copies: 1 / Total copies: 1
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Corrosion/degradation of soil reinforcements for mechanically stabilized earth walls and reinforced soil slopes / by Elias, Victor.(CARDINAL)286934; United States.Federal Highway Administration.(CARDINAL)139839; Earth Engineering & Sciences, Inc.(CARDINAL)286932;
Includes bibliographical references (pages 101-102).Sponsored by Federal Highway Administration, and prepared by Earth Engineering & Sciences, Inc., under contract no.
Subjects: Technical reports.; Foundations; Roads; Slopes (Soil mechanics); Soil stabilization.; Soil-structure interaction.;
Available copies: 1 / Total copies: 1
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Subgrade stabilization alternatives to lime and cement : final report / by Daniels, John,1974-(CARDINAL)299016; North Carolina.Department of Transportation.Research and Analysis Group.(CARDINAL)272064; University of North Carolina at Charlotte.Department of Civil and Environmental Engineering.(CARDINAL)290432;
Includes bibliographical references.Final report;Performed by Department of Civil and Environmental Engineering, University of North Carolina at Charlotte, sponsored by NC Department of Transportation, Research and Analysis Group
Subjects: Soil chemistry; Lime; Cement; Soil stabilization; Reinforced soils;
Available copies: 6 / Total copies: 7
On-line resources: https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931; https://digital.ncdcr.gov/documents/detail/3282931;
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Establishment of subgrade undercut criteria and performance of alternative stabilization measures / by Borden, Roy H.(CARDINAL)205371; North Carolina State University.Department of Civil, Construction, and Environmental Engineering.(CARDINAL)307977; North Carolina.Department of Transportation.(CARDINAL)145570;
The scope of this research includes the development of criteria to define the need for undercutting, the depth of the undercut, and the quality of the backfill material such that the cost and performance are optimized. In addition, chemical stabilization and geosynthetics reinforcement, in combination with several thicknesses of the ABC were studied to provide comparative criteria for the enhancement of various poor subgrade soils encountered in N.C. with, or in lieu of, undercut and replacement with select fill. The criteria are presented along with the associated relative costs of each alternative.Includes bibliographical references (pages 272-283).Introduction -- Literature review -- Test materials characterization -- Prototype experimental design via field measurements and numerical models -- Prototype testing and quality control -- Prototype test quality control -- Testing results -- Comparative stabilization performance -- Numerical model, input parameters and calibration -- Undercut criteria -- Simulation of field cases -- Cost analysis -- Summary and conclusions.
Subjects: Soil chemistry; Soil stabilization; Reinforced soils; Pavements; Pavements, Asphalt;
Available copies: 7 / Total copies: 8
On-line resources: Suggest title for digitization;
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Improved grouts for bonded tendons in post-tensioned bridge structures / by Thompson, N. G.(CARDINAL)311419; Lankard, David R.(CARDINAL)311418; Sprinkel, Michael M.(CARDINAL)312777; United States.Federal Highway Administration.(CARDINAL)139839; Cortest Columbus Technologies, Inc.(CARDINAL)311417;
Includes bibliographical references (pages 133-135).Introduction -- Background -- Task A: Development of accelerated test methods -- Task B: Development of design mixtures for grout -- Task C: Design and conduct laboratory test program -- Task D: Specifications for grout mixtures -- Results -- Conclusions -- Recommendations -- Appendix A -- References.Final report;Grout is the final line of defense against corrosion of the steel tendon. Accordingly, FHWA initiated this study (i) to develop and test new mixture designs for grouts, (ii) to develop and perform accelerated corrosion test methods on the new grouts, and (iii) to compare the corrosion performance of the new grouts with the standard grouts. Several modifiers and additives for grouts were examined, including: high-range water-reducers, fly ash, silica fume, latex polymer modifier, expansive agents, anti-bleed additives, and corrosion inhibitors. It was shown that these additives can greatly affect the fluidity, open-time, bleeding/segregation, chloride permeability, and mechanical properties of the grouts. Several experimental grouts were designed which provided improved properties compared to the more standard grouts presently being used. An accelerated corrosion test method (ACTM) was developed which evaluates the corrosion performance of steel tendons embedded in the grout.Performed by Cortest Columbus Technologies, under contract no.
Subjects: Technical reports.; Concrete bridges; Concrete bridges; Grouting (Soil stabilization); Reinforced concrete;
Available copies: 1 / Total copies: 1
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