00936034

Component

https://doi.org/10.3141/1808-08

http://scholar.google.com...Khan&publication_year=2002

Lightweight fill, used to replace granular fill on a weak subgrade, is of particular interest to road construction. Scrap tires benefit from their lightweight and thermal insulation properties and hydraulic conductivity. Road construction with scrap tires provides a means of disposing of the tires and helps reduce the instability of construction over soft and frost-susceptible soils. However, most research has been focused on using 150-mm or smaller shreds as a lightweight fill in road construction, and there is a lack of technical data on the use of large-size shredded rubber tires. A large-size tire shred embankment, constructed to provide access to a gravel pit near the city of Winnipeg, Manitoba, Canada, is described. The thermal and mechanical behavior of large-size tire shreds is examined by conducting field temperature monitoring and laboratory and field compressibility testing. The thermal behavior of the tire shreds, established from on-site automated temperature measurements, has shown the thermal coefficient of the tires to be 0.2832 W/m times deg C. In the compressibility analysis, three sizes of shred (300 mm, 150 mm, and 50 mm) are examined. The elastic modulus of the shredded tires is determined as a function of the bulk density of tires. A model is used to predict and verify the compressibility of the tire shred embankment based on the laboratory testing of tire compressibility.

This paper appears in Transportation Research Record No. 1808, Soil Mechanics 2002.

English

p. 67-75

2002

Transportation Research Record

0309077346

Figures (9) ; Photos (1) ; References (16) ; Tables (2)

Bulk density; Compressibility; Embankments; Field tests; Fills; Laboratory tests; Lightweight materials; Mechanical properties; Modulus of elasticity; Monitoring; Road construction; Shredding; Size; Temperature; Thermal properties

Scrap tires; Shredded tires; Thermal coefficient

Winnipeg (Canada)

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Jan 2 2003 12:00AM

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