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Effects of Brackish, Salt, and Fresh Water on Very High Moisture Content Cement-Stabilized Fine-Grained Soil
Chemical stabilization has been commonly used as a means of increasing the strength of a wide variety of soil types for some time. In recent years, very high moisture content fine-grained soils have been given more attention due to increased emphasis on sustainability and also due to shortages of high-quality construction materials (especially in coastal areas). This paper describes a laboratory study where brackish and salt water were mixed with three fine-grained soils with varying properties to create soil slurries at elevated moisture contents (100 to 233%). The soil slurries were stabilized with three Portland cements consisting of two ASTM C 150 Type III products, and a specialty grind Portland cement. Testing for shear strength commenced via 1) unconfined compression and 2) with hand-held gauges. Shear strength values of stabilized slurries mixed with brackish and salt water were compared with control specimens mixed with fresh water. Water salinity appeared to have some effect on strength gain, yet the effect was not consistent with soil or water type. The use of cement stabilized slurries with high moisture contents in areas where brackish or salt water are present does not appear to be prohibitive.
Effects of Brackish, Salt, and Fresh Water on Very High Moisture Content Cement-Stabilized Fine-Grained Soil
Chemical stabilization has been commonly used as a means of increasing the strength of a wide variety of soil types for some time. In recent years, very high moisture content fine-grained soils have been given more attention due to increased emphasis on sustainability and also due to shortages of high-quality construction materials (especially in coastal areas). This paper describes a laboratory study where brackish and salt water were mixed with three fine-grained soils with varying properties to create soil slurries at elevated moisture contents (100 to 233%). The soil slurries were stabilized with three Portland cements consisting of two ASTM C 150 Type III products, and a specialty grind Portland cement. Testing for shear strength commenced via 1) unconfined compression and 2) with hand-held gauges. Shear strength values of stabilized slurries mixed with brackish and salt water were compared with control specimens mixed with fresh water. Water salinity appeared to have some effect on strength gain, yet the effect was not consistent with soil or water type. The use of cement stabilized slurries with high moisture contents in areas where brackish or salt water are present does not appear to be prohibitive.
Effects of Brackish, Salt, and Fresh Water on Very High Moisture Content Cement-Stabilized Fine-Grained Soil
Carruth, William D. (author) / Howard, Isaac L. (author) / Sullivan, W. Griffin (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 2169-2178
2014-02-24
Conference paper
Electronic Resource
English
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