01122367

Component

https://doi.org/10.3141/2104-11

http://scholar.google.com...alid&publication_year=2009

The use of waste and recycled materials in different construction applications is a widespread approach. In this work, incinerator bottom ash (IBA) waste was mixed with limestone at different levels, namely, 0%, 30%, 50%, and 80%, to produce blends for use as pavement foundation layers. The study focused on evaluating the resistance to permanent deformation of IBA–limestone blends, which is vital to prevent or minimize pavement rutting. An experimental program was undertaken to investigate the influence of plant-based enzyme treatment on the behavior of these blends. Cyclic and static triaxial compression tests were adopted to determine the materials’ mechanical characteristics. Emphasis was on examining the effect of various parameters, such as IBA content, enzyme content, moisture content, curing time, stress level, and number of load applications, on the behavior of the investigated blends. The accumulated permanent strain and strain rate were used to describe the blends’ shakedown stress limits. Results showed that IBA blends gave a favorable performance as foundation layers in comparison with the control limestone blend. Enzyme addition improved the permanent deformation resistance for the control limestone blend; however, it did not have any noticeable effect on the IBA blends. According to the shakedown concept analysis, all blends, at a cyclic stress level of more than 21% of the static failure stress, underwent excessive plastic strain.

01140575

09-0071

English

pp 97-104

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126199

Print

Figures (12) ; Photos (1) ; References (16)

Base course (Pavements); Bottom ash; Compression tests; Deformation; Foundations; Limestone; Moisture content; Rutting; Soil mechanics

Curing time; Enzymes; Plastic strain

Geotechnology; Highways; Materials; Pavements; I42: Soil Mechanics

TRIS, TRB, ATRI

Jan 30 2009 4:20PM

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