Abstract
Laboratory investigations on clay to be used as a sealant in high temperature water storage or ponds were performed. The main objectives were to find a suitable clay type and elucidate compaction properties and also permeability of clay layers, undrained shear strength variation and sliding properties between clay and artificial membrane - at increasing temperature. Test results were used for evaluation of compaction, expected permeability and sliding stability at different slope angles. The use of the clay till with a clay content higher than 14%, and a plasticity index higher than 5%, are recommended. After careful selection of the clay till borrow-pit, with respect to clay content and natural water content, the clay till should be compacted in layer of 30 cm thickness. The water content W{sub indb} in the clay till at the time of compaction should be in the interval W{sub opt} < W{sub indb} < W{sub opt} + 2%. the clay till should be compacted to more than 95% of the Standard Proctor value and verified by usual control methods. At this degree of compaction a coefficient of permeability k < 10{sup -9} m/s is anticipated. For clay till placed on plastic the basin depth should be
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Citation Formats
Huulgaard, L, and Christensen, J L.
Clay sealing of pond heat storage facilities. Laboratory experiments at high temperatures. Report 1; Lertaetning af damvarmelager. Laboratorieundersoegelser ved hoeje temperaturer. Rapport 1.
Denmark: N. p.,
1992.
Web.
Huulgaard, L, & Christensen, J L.
Clay sealing of pond heat storage facilities. Laboratory experiments at high temperatures. Report 1; Lertaetning af damvarmelager. Laboratorieundersoegelser ved hoeje temperaturer. Rapport 1.
Denmark.
Huulgaard, L, and Christensen, J L.
1992.
"Clay sealing of pond heat storage facilities. Laboratory experiments at high temperatures. Report 1; Lertaetning af damvarmelager. Laboratorieundersoegelser ved hoeje temperaturer. Rapport 1."
Denmark.
@misc{etde_10140618,
title = {Clay sealing of pond heat storage facilities. Laboratory experiments at high temperatures. Report 1; Lertaetning af damvarmelager. Laboratorieundersoegelser ved hoeje temperaturer. Rapport 1}
author = {Huulgaard, L, and Christensen, J L}
abstractNote = {Laboratory investigations on clay to be used as a sealant in high temperature water storage or ponds were performed. The main objectives were to find a suitable clay type and elucidate compaction properties and also permeability of clay layers, undrained shear strength variation and sliding properties between clay and artificial membrane - at increasing temperature. Test results were used for evaluation of compaction, expected permeability and sliding stability at different slope angles. The use of the clay till with a clay content higher than 14%, and a plasticity index higher than 5%, are recommended. After careful selection of the clay till borrow-pit, with respect to clay content and natural water content, the clay till should be compacted in layer of 30 cm thickness. The water content W{sub indb} in the clay till at the time of compaction should be in the interval W{sub opt} < W{sub indb} < W{sub opt} + 2%. the clay till should be compacted to more than 95% of the Standard Proctor value and verified by usual control methods. At this degree of compaction a coefficient of permeability k < 10{sup -9} m/s is anticipated. For clay till placed on plastic the basin depth should be limited to 3-5 metres. If it is placed on rubber the basin depth can be 15 meters. During operation neither the filling nor the heating of the basin will cause excess pore pressures endangering the sliding stability. But intensified attention and monitoring should be exercised when the basin is emptied. Fast bail-out may cause severe reduction, of the sliding stability. (AB).}
place = {Denmark}
year = {1992}
month = {Dec}
}
title = {Clay sealing of pond heat storage facilities. Laboratory experiments at high temperatures. Report 1; Lertaetning af damvarmelager. Laboratorieundersoegelser ved hoeje temperaturer. Rapport 1}
author = {Huulgaard, L, and Christensen, J L}
abstractNote = {Laboratory investigations on clay to be used as a sealant in high temperature water storage or ponds were performed. The main objectives were to find a suitable clay type and elucidate compaction properties and also permeability of clay layers, undrained shear strength variation and sliding properties between clay and artificial membrane - at increasing temperature. Test results were used for evaluation of compaction, expected permeability and sliding stability at different slope angles. The use of the clay till with a clay content higher than 14%, and a plasticity index higher than 5%, are recommended. After careful selection of the clay till borrow-pit, with respect to clay content and natural water content, the clay till should be compacted in layer of 30 cm thickness. The water content W{sub indb} in the clay till at the time of compaction should be in the interval W{sub opt} < W{sub indb} < W{sub opt} + 2%. the clay till should be compacted to more than 95% of the Standard Proctor value and verified by usual control methods. At this degree of compaction a coefficient of permeability k < 10{sup -9} m/s is anticipated. For clay till placed on plastic the basin depth should be limited to 3-5 metres. If it is placed on rubber the basin depth can be 15 meters. During operation neither the filling nor the heating of the basin will cause excess pore pressures endangering the sliding stability. But intensified attention and monitoring should be exercised when the basin is emptied. Fast bail-out may cause severe reduction, of the sliding stability. (AB).}
place = {Denmark}
year = {1992}
month = {Dec}
}