Mitigation of Expansive Soils in South Dakota

Cuelho, Eli; Akin, Michelle; Western Transportation Institute; Montana State University (Bozeman, Montana)

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Mitigation of Expansive Soils in South Dakota

2017-08-01
By Cuelho, Eli ; Akin, Michelle

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English

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Details:

Creators:

Cuelho, Eli ; Akin, Michelle

Cuelho, Eli ; Akin, Michelle Less -
Corporate Creators:

Western Transportation Institute ; Montana State University (Bozeman, Montana)

Western Transportation Institute ; Montana State University (Bozeman, Montana) Less -
Corporate Contributors:

South Dakota. Department of Transportation. Office of Research ; United States. Federal Highway Administration

South Dakota. Department of Transportation. Office of Research ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Benefit Cost Analysis California Bearing Ratio CBR Expansive Clay-shale Fault Fly Ash Frost Heaving Geosynthetic Geotechnology Guidelines Heave Highways Laboratory Tests Lime Literature Reviews Materials Mitigation Soil Lime Mixtures Soil Stabilization Specifications Swelling Soils
Publication/ Report Number:

SD2014-13-F
Resource Type:

Tech Report
Geographical Coverage:

United States ; South Dakota

United States ; South Dakota Less -
TRIS Online Accession Number:

01691001
Edition:

Final Report April 2015-July 2017
Corporate Publisher:

Western Transportation Institute
Abstract:

Expansive soils can cause considerable damage to pavements. Several localized areas on South Dakota highways have experienced significant heaving along fault gouges caused by differential shifting of discontinuous clay/shale deposits that intersect the road embankment and adjacent drainage features. The South Dakota Department of Transportation initiated this project to update its specifications and construction guidelines to more effectively mitigate the impact of these types of distresses on paved roads. A program that included a comprehensive literature review, laboratory tests on materials collected from six sites in South Dakota, and a benefit/cost analysis was used to meet this objective. Laboratory testing consisted of general soil characterization tests, standard CBR tests, free-swell tests, and large-scale CBR tests. Free-swell data were used to limit the type and application rate of chemical additives used to mitigate expansive soils. Applications of 9 percent lime and 12 percent Class C fly ash were selected for follow-on CBR tests used to evaluate swell and strength. A benefit/cost analysis was run using swell results from the large-scale CBR tests, indicating that 12 percent fly ash provided the most economical value based on a hypothetical construction project. Construction guidelines were outlined to help mitigate the effect and presence of water in and around expansive clay/shale soils and fault gouges, and a step-by-step process was outlined and summarized in a flow chart to guide practitioners on how to adequately identify and treat expansive soils in transportation applications using chemical additives.
Format:

PDF
Funding:

311229
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b9309be21c7e7f5b89aa46a61b55bac98cef6f0f31a7ab6f65a2e5f862bd5f36
Download URL:

https://rosap.ntl.bts.gov/view/dot/38141/dot_38141_DS1.pdf
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Mitigation of Expansive Soils in South Dakota

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