Engineered clay-shredded tyre mixtures as barrier materials
An engineered clay consisting of kaolin and bentonite was mixed with shredded tyre in various weight percentages and examined for use as a constituent in a landfill liner. The clay-tyre mixtures properties in terms of compaction, unconfined compressive strength, permeability to water and paraffin, leachability, stress-strain behaviour, free swell behaviour and swelling pressure were investigated. The results show that the dry density and strength reduced with the addition of tyre and also with increased tyre content but that good interaction was developed between the clay and tyre. The strain at failure increased showing reinforcing effect of the tyre. The permeability to paraffin was considerably reduced compared to that to water due to the presence of the tyre which caused high swelling pressures to develop. The leachability results indicate initial high concentrations leaching out of the soil-tyre mixtures which will be subjected to dilution in the environment. This work adds evidence to the potential advantages of using soil-tyre mixtures as a landfill liner material.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
ON: DE98001967; TRN: 98:005196
- Resource Type:
- Resource Relation:
- Conference: International containment technology conference and exhibition, St. Petersburg, FL (United States), 9-12 Feb 1997; Other Information: PBD: ; Related Information: Is Part Of International Containment Technology Conference: Proceedings; PB: 1140 p.
- Research Org:
- USDOE, Washington, DC (United States)
- Country of Publication:
- United States
- 54 ENVIRONMENTAL SCIENCES; 36 MATERIALS SCIENCE; POLLUTION CONTROL; CONTAINMENT; BENTONITE; KAOLIN; LEACHING; PARAFFIN; PERMEABILITY; SWELLING; MECHANICAL PROPERTIES
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