Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Soil-Cement/Synthetic Membrane Liner for Hazardous Waste Impoundments
A composite liner has been developed for use in hazardous waste impoundments. The liner offers a high degree of reliability against seepage, is durable, and provides a firm working surface. It is also economical and provides additional impoundment storage volume over conventional thicker lining systems in use today. The liner consists of a 30-mil synthetic membrane placed between two 5-in. compacted layers of soil-cement. Soil-cement is a mixture of natural soils, portland cement, and water. It is similar to concrete and natural rock. The virtual impermeability of soil-cement should reduce the concentration of hazardous wastes contacting the synthetic membrane. This would help increase the longevity of the membrane.
On September 20–23, 1983 a test section for the composite liner was successfully constructed near Apalachin, New York, USA. It simulates a portion of a waste impoundment and has a horizontal length of 30 ft and a side slope length of 40 ft. The side slope is 3 to 1 (horizontal to vertical). The test section is 44 ft wide. Both a 30-mil and a 40-mil membrane were placed adjacent to each other on the bottom layer of soil-cement. The membranes were field welded. Observations of each membrane showed that they are puncture-resistant to the placement of soil-cement.
A Soil-Cement/Synthetic Membrane Liner for Hazardous Waste Impoundments
A composite liner has been developed for use in hazardous waste impoundments. The liner offers a high degree of reliability against seepage, is durable, and provides a firm working surface. It is also economical and provides additional impoundment storage volume over conventional thicker lining systems in use today. The liner consists of a 30-mil synthetic membrane placed between two 5-in. compacted layers of soil-cement. Soil-cement is a mixture of natural soils, portland cement, and water. It is similar to concrete and natural rock. The virtual impermeability of soil-cement should reduce the concentration of hazardous wastes contacting the synthetic membrane. This would help increase the longevity of the membrane.
On September 20–23, 1983 a test section for the composite liner was successfully constructed near Apalachin, New York, USA. It simulates a portion of a waste impoundment and has a horizontal length of 30 ft and a side slope length of 40 ft. The side slope is 3 to 1 (horizontal to vertical). The test section is 44 ft wide. Both a 30-mil and a 40-mil membrane were placed adjacent to each other on the bottom layer of soil-cement. The membranes were field welded. Observations of each membrane showed that they are puncture-resistant to the placement of soil-cement.
A Soil-Cement/Synthetic Membrane Liner for Hazardous Waste Impoundments
Dinchak, William G. (Autor:in)
Water International ; 9 ; 79-83
01.01.1984
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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