Geotechnical Solutions for Soil Improvement, Rapid Embankment Construction, and Stabilization of the Pavement Working Platform (2012) / Chapter Skim
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Pages 30-38
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30 C h a p t e r 5 Introduction Extensive literature reviews and data mining on each technology were performed to complete project Tasks 9, 10, 11, and 12 (see Chapter 1)
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31 Comprehensive technology Summary Purpose of the CTS The CTS is a detailed literature review summary for a given technology. Its purpose is to serve as the primary, or keystone, document on a given technology for completion of the Phase 2 R02 project tasks.
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32 that these products and tools will be refined and updated during the beta testing program of Phase 3 and with continued use of the fully released website. The reports, products, and tools that flowed from the CTS (for each technology)
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33 for application. Generally, all the desired outputs from design procedures (from the first matrix in this document)
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34 Settlement Analysis of Stone Columns Stone column technology lacks a standard design procedure for accurately estimating settlements. The R02 project team believes that current methods for estimating settlements of stone columns are conservative.
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35 generate a technical evaluation report analyzing the design, construction, performance, and quality assurance aspects of the technology. A report detailing the technology background, applications, QC/QA procedures, and materials and equipment has been completed.
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36 • The Parabolic Method for determining the tension and strain in the geosynthetic reinforcement is consistent with the test results. • The load-displacement compatibility approach by Filz and Smith incorporates soft-soil support and is consistent with the test results when the load is shared between the concrete columns and the geofoam before it is dissolved.
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37 • The in situ elastic modulus of chemical-stabilized subgrades determined from the static PLT varied from 7 MPa to 317 MPa at the nine test sites. The MEPDG recommended typical modulus value for lime-stabilized soils is 310 MPa with a range of 240 MPa to 413 MPa, and a deteriorated modulus value for lime-stabilized soil is 103 MPa.
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38 differences in in situ soil characteristics with different geosynthetic and geocell reinforcement methods, compaction influence depth under vibratory compacted roller used on the project, and usefulness of application of IC technology for QC/QA. Assessment of Geocell-Reinforced Recycled Asphalt Pavements Geocell confinement technology uses geocell at the bottom portion of bases and subbases or on the top of subgrade in unpaved roads and some paved roads to construct stable pavement systems with less base or subbase thickness than traditional unreinforced pavement systems.
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