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Experimental Study on behavior of the Lightweight Air-foamed Soil Considering Freezing-thawing and Soaking Conditions
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 Title & Authors
Experimental Study on behavior of the Lightweight Air-foamed Soil Considering Freezing-thawing and Soaking Conditions
Kang, Daekyu; Shin, Eunchul;
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 Abstract
In order to determine the variability of environmental characteristics of lightweight air-foamed soil using marine clay according to freezing-thawing and soaking conditions, unconfined compressive strength of the lightweight air-foamed soil samples made by changing the amount of cement under curing conditions of outdoor low temperature, underground or indoor wetting were observed. Compressive strength was not increased under freezing-thawing (temperature range of ) regardless of the amount of cement but the more cement using, it was increased rapidly by underground curing conditions within 30 cm beneath ground level. Therefore, it is necessary to install insulation layer cutting off exterior cold air after construction of lightweight air-foamed soil in condition of freezing-thawing. Bulk density was increased too small under the long-time soaking condition, it tended to decrease rapidly when samples were dried up and had below 6% of water contents. But variability of compressive strength and bulk density was very small for preventing drying and keeping its wet state. The lightweight air-foamed soil that installed beneath ground water level or covered by soil can be evaluated as a long-term reliable construction material.
 Keywords
Dredged soil;Lightweight;Curing temperature;Soaking;Freezing-thawing;Drying;
 Language
Korean
 Cited by
 References
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