Engineered clay-shredded tyre mixtures as barrier materials

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:576616

Al-Tabbaa, A; Aravinthan, T ^[1]

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1. Univ. of Birmingham (United Kingdom)

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.

• Research Organization: USDOE, Washington, DC (United States)
• OSTI ID: 576616
• Report Number(s): CONF-970208--Proc.; ON: DE98001967
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
54 ENVIRONMENTAL SCIENCES
BENTONITE
CONTAINMENT
KAOLIN
LEACHING
MECHANICAL PROPERTIES
PARAFFIN
PERMEABILITY
POLLUTION CONTROL
SWELLING