00607751

Component

http://onlinepubs.trb.org...trr/1990/1288/1288-008.pdf

https://scholar.google.co...s+Jr&publication_year=1990

Stabilized fly ash is a mixture of fly ash and lime, or fly ash and cement, compacted at optimum moisture content and cured to form a product-like soil-lime or soil-cement. Limited past applications and engineering properties of stabilized class F fly ash are discussed. A research study was undertaken to establish the physical, chemical, compaction, strength, and durability characteristics of class F fly ash stabilized with lime, cement, or lime/cement combinations. Two ashes obtained from West Virginia power plants were included in the laboratory testing program. It was found that although the ashes are quite different in properties, both ashes can be successfully stabilized to produce pozzolanic mixtures of adequate strength and durability for use as base or liner, with the addition of a proper amount of stabilizer and by allowing the mixture to cure for a sufficiently long period. Cement stabilization, in general, produced better strength and durability than lime stabilization for a given stabilizer content for curing periods up to 56 days. Freeze-thaw cycles caused substantial strength losses, and wet-dry cycles resulted in strength gains. Vacuum saturation with water and an acetic acid solution produced intermediate effects. Very good correlations were found between freeze-thaw and water vacuum saturation tests.

This paper appears in Transportation Research Record No. 1288, Geotechnical Engineering 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411083

p. 59-69

1990

Transportation Research Record

0309050642

Figures (6) ; References (14) ; Tables (5)

Calcium oxide; Cement; Chemical properties; Compaction; Concrete curing; Durability; Fly ash; Freeze thaw tests; Laboratory tests; Lime cement; Percent saturation; Physical properties; Properties of materials; Soil stabilization; Strength of materials; Vacuum; Wetting and drying tests

Stabilization; Vacuum saturation

Geotechnology; Highways; Materials; I35: Miscellaneous Materials

TRIS, TRB, ATRI

Apr 30 1991 12:00AM

• A STUDY OF COUPLED ELECTRIC/HYDRAULIC FLOW IN KAOLINITE
• ACID/BASE DISTRIBUTIONS IN ELECTROKINETIC SOIL PROCESSING
• ANALYSIS OF RETAINING STRUCTURES WITH SKEW REINFORCEMENT
• CHARACTERIZATION AND STRUCTURAL DESIGN OF CEMENT-TREATED BASE
• CHEMICO-OSMOSIS VERSUS DIFFUSION-OSMOSIS
• ELECTRO-KINETIC FLOW BARRIERS IN COMPACTED CLAY
• EXPANSIVE BEHAVIOR OF SUBGRADE SOILS IN ARID AREAS
• FAILURE OF A GEOGRID-REINFORCED SOIL WALL
• IMPLEMENTATION OF A BEARING CAPACITY DESIGN PROCEDURE FOR RAILWAY SUBGRADES: A CASE STUDY
• LIVE LOAD DISTRIBUTION ON CONCRETE BOX CULVERTS
• METHODS FOR DEVELOPING DEFENSIBLE SUBJECTIVE PROBABILITY ASSESSMENTS
• MINIMUM COVER HEIGHTS FOR CORRUGATED PLASTIC PIPE UNDER VEHICLE LOADING
• PERMEABILITY AND LEACHATE CHARACTERISTICS OF STABILIZED CLASS F FLY ASH
• PREDICTIVE MODELING OF ROADWAY COSTS IN NORTHEASTERN NIGERIA
• REINFORCED SOIL HIGHWAY SLOPES
• ROCKFALL HAZARD ANALYSIS USING THE COLORADO ROCKFALL SIMULATION PROGRAM
• SOUND BARRIER WALL FOUNDATIONS IN GRANULAR MATERIAL
• THERMALLY DRIVEN ELECTRICAL COUPLING EFFECTS AND PORE WATER ADVECTION IN SOILS
• USE OF WASTE AND BY-PRODUCTS IN HIGHWAY CONSTRUCTION
• VALUE ENGINEERING APPROACH TO GEOLOGIC HAZARD RISK MANAGEMENT
• ZINC DETOXIFICATION OF SOILS BY ELECTRO-OSMOSIS