Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Subgrade Soil Stabilization Using Low-Quality Recycled Concrete Aggregate
Recycled concrete aggregate (RCA) results from the recycling of Portland cement concrete pavements. The use of RCA as aggregates on paving projects, where virgin quality aggregates are scarce, offers economic and environmental benefits. RCA is commonly used in the unbound base or subbase layer in pavements. Lower quality RCA (i.e., from D-cracked pavement) can be used in subgrade soil stabilization. In this study, a clay subgrade soil was stabilized using RCA and three different cementitious materials (lime, Class C fly ash, and a combination of Portland cement and fly ash). Clay soil-cement mixtures containing 0%, 50%, and 100% RCA, from two D-cracked concrete pavements, were designed following the United States Army Corps of Engineers method. The methodology uses standard Proctor compaction and unconfined compressive strength test results. These results indicate RCA, in conjunction with all cementitious materials except lime, improves the clay soil strength.
Subgrade Soil Stabilization Using Low-Quality Recycled Concrete Aggregate
Recycled concrete aggregate (RCA) results from the recycling of Portland cement concrete pavements. The use of RCA as aggregates on paving projects, where virgin quality aggregates are scarce, offers economic and environmental benefits. RCA is commonly used in the unbound base or subbase layer in pavements. Lower quality RCA (i.e., from D-cracked pavement) can be used in subgrade soil stabilization. In this study, a clay subgrade soil was stabilized using RCA and three different cementitious materials (lime, Class C fly ash, and a combination of Portland cement and fly ash). Clay soil-cement mixtures containing 0%, 50%, and 100% RCA, from two D-cracked concrete pavements, were designed following the United States Army Corps of Engineers method. The methodology uses standard Proctor compaction and unconfined compressive strength test results. These results indicate RCA, in conjunction with all cementitious materials except lime, improves the clay soil strength.
Subgrade Soil Stabilization Using Low-Quality Recycled Concrete Aggregate
Tavakol, Masoumeh (Autor:in) / Hossain, Mustaque (Autor:in) / Tucker-Kulesza, Stacey E. (Autor:in)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 235-244
21.03.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Subgrade Soil Stabilization Using Low-Quality Recycled Concrete Aggregate
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