00741968

Component

https://doi.org/10.3141/1577-13

http://scholar.google.com...avez&publication_year=1997

Municipal waste combustor (MWC) bottom ash from mass-burn (MB) and refuse-derived-fuel (RDF) facilities was evaluated for potential use as highway fill material. MWC bottom ash exhibits acceptable shear and deformation characteristics for many highway applications. RDF ash contains a lower metals percentage than MB ash. The specific gravity of both ashes was found to be a function of metals content. Moisture-density relationships and unconfined compressive strengths were found to be a function of compaction energy and moisture content. Allowing compacted ash to age increased its unconfined compressive strength. Stress-strain characteristics of both ashes are similar to those of sands. Cohesion exists possibly because of pozzolanic reactions in the bottom ash. The angle of internal friction increased with compacted density. Elastic moduli are a function of density and confining pressure. RDF ash was found to be twice as stiff as MB ash. California bearing ratio results greater than 100 indicated that MB ash could be utilized as road base, and values between 25 and 95 indicated that RDF would be acceptable for use in subgrade and subbase. Bearing ratio results were highly dependent on moisture conditions. Both ashes exhibit little to no swell and should not cause field problems during saturation.

This paper appears in Transportation Research Record No. 1577, Pavement Base and Foundation Materials, Deformation Characteristics of Subgrade, and Properties of Unconventional Aggregates.

English

p. 101-108

1997

Transportation Research Record

0309061598

Figures (7) ; References (31) ; Tables (3)

Base course (Pavements); Bottom ash; California bearing ratio; Chemical composition; Coefficient of internal friction; Cohesion; Compressive strength; Deformation; Deformation curve; Fills; Metals; Modulus of elasticity; Pozzolanic action; Shear properties; Specific gravity; Stiffness; Subbase materials; Subgrade materials; Swelling index

Fill (Embankment); Unconfined compressive strength

Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers

TRIS, TRB, ATRI

Oct 21 1997 12:00AM

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• ANISOTROPIC MODELING OF GRANULAR BASES IN FLEXIBLE PAVEMENTS
• APPLICATION OF GEOTECHNICAL CENTRIFUGE TESTING TO EVALUATE UNCONVENTIONAL HIGHWAY MATERIALS
• BEHAVIOR OF SOME PAVEMENT FOUNDATION MATERIALS UNDER REPEATED LOADING
• CHEMICAL APPROACH TO FORMATION OF CALCITE PRECIPITATE FROM RECYCLED CONCRETE AGGREGATE BASE LAYERS
• FIELD PERFORMANCE AND MITIGATION OF SHREDDED TIRE EMBANKMENT
• FIELD VERIFICATION OF LABORATORY RESILIENT MODULUS MEASUREMENTS ON SUBGRADE SOILS
• GEOTECHNICAL AND ENVIRONMENTAL CHARACTERISTICS OF ATMOSPHERIC FLUIDIZED BED COMBUSTION ASH AND STOKER ASH
• KANSAS EXPERIENCE WITH STRATEGIC HIGHWAY RESEARCH PROGRAM WASHINGTON HYDRAULIC FRACTURE INDEX TEST
• PERSPECTIVES ON LIABILITY FOR CONSTRUCTIVE REUSE OF HIGH-VOLUME WASTE STREAMS
• SEASONAL VARIATION OF BACKCALCULATED SUBGRADE MODULI
• TRIAXIAL CHARACTERIZATION OF MINNESOTA ROAD RESEARCH PROJECT GRANULAR MATERIALS
• USING SUCTION AND DIELECTRIC MEASUREMENTS AS PERFORMANCE INDICATORS FOR AGGREGATE BASE MATERIALS