00984554

Component

https://doi.org/10.3141/1891-01

http://scholar.google.com...ashi&publication_year=2004

Successful use of synthetic lightweight aggregates made from waste fly ash and plastics can help in conserving mineral aggregates and reusing waste materials. The objective of this study was to evaluate the use of synthetic lightweight aggregate made from waste fly ash and plastics in hot-mix asphalt. The scope of this laboratory study included preparation of aggregate blends and mixes with different percentages of synthetic lightweight aggregates, compaction of samples, testing of samples, and analysis of results. Mixes were made with 0%, 5%, 10%, 15%, and 20% synthetic lightweight aggregates by weight of aggregates. Tests included bulk specific gravity, theoretical maximum density, resilient modulus, and indirect tensile strength at 25 deg C on unconditioned and conditioned samples as well as rut testing with wheel tracking equipment at 60 deg C. Test results were analyzed statistically to determine the effect of synthetic lightweight aggregates on hot-mix asphalt properties. The results indicate that the inclusion of synthetic lightweight aggregates enhances stiffness and resistance against rutting and moisture-induced damage of hot-mix asphalt. A relatively high absorption was noted for mixes containing 20% synthetic lightweight aggregates. The main conclusions are that synthetic lightweight aggregate has excellent potential for being used as part of hot-mix asphalt, and 15% by weight of aggregate appears to be an optimum amount for use. Further work should be pursued to determine the effect of synthetic lightweight aggregate on low-temperature properties of hot-mix asphalt.

This paper appears in Transportation Research Record No. 1891, Bituminous Paving Mixtures 2004.

00984553

English

p. 1-7

2004

Transportation Research Record

0309094852

Figures (6) ; Photos (1) ; References (10) ; Tables (7)

Artificial aggregates; Density; Fly ash; Hot mix asphalt; Laboratory tests; Lightweight aggregates; Modulus of resilience; Plastics; Rutting; Specific gravity; Stiffness; Tensile strength

Moisture susceptibility

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Jan 14 2005 12:00AM

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• ANALYSIS OF TEMPERATURE DATA FOR THE NATIONAL CENTER FOR ASPHALT TECHNOLOGY TEST TRACK
• APPLICATION OF GENETIC ALGORITHM IN ASPHALT PAVEMENT DESIGN
• BENEFITS OF WARRANTIES TO INDIANA
• COMPARISON OF FALLING-HEAD AND CONSTANT-HEAD TECHNIQUES: ESTIMATING FIELD PERMEABILITY OF HOT-MIX ASPHALT PAVEMENTS
• DETERMINING AIR VOIDS CONTENT OF COMPACTED STONE MATRIX ASPHALT MIXTURES
• DYNAMIC MODULUS TESTING OF ASPHALT CONCRETE IN INDIRECT TENSION MODE
• EFFECT OF DIFFERENT AXLE CONFIGURATIONS ON FATIGUE LIFE OF ASPHALT CONCRETE MIXTURE
• EFFECT OF SUPERPAVE DEFINED RESTRICTED ZONE ON HOT-MIX ASPHALT PERFORMANCE
• EFFECTS OF MOISTURE DAMAGE ON MATERIAL PROPERTIES AND FATIGUE RESISTANCE OF ASPHALT MIXTURES
• EVALUATION OF MOISTURE SENSITIVITY OF BITUMINOUS MIXTURES BY A COMPLEX MODULUS APPROACH
• EVALUATION OF SIMPLE PERFORMANCE TESTS ON HOT-MIX ASPHALT MIXTURES FROM SOUTH CENTRAL UNITED STATES
• EVALUATION OF THE DYNAMIC ANGLE VALIDATOR
• FIELD AND LABORATORY INVESTIGATION OF PERMEABLE ASPHALT MIXES ON GEORGIA HIGHWAYS
• FIELD AND LABORATORY PERFORMANCE OF SUPERPAVE MIXTURES IN NEVADA
• IMPLICATIONS OF EXPERIMENTAL MEASUREMENTS AND ANALYSES OF THE INTERNAL STRUCTURE OF HOT-MIX ASPHALT
• LABORATORY PERFORMANCE TESTING OF OPEN-GRADED FRICTION COURSE MIXTURES
• MEASUREMENT OF ACOUSTICAL AND MECHANICAL PROPERTIES OF POROUS ROAD SURFACES AND TIRE AND ROAD NOISE
• MODEL FOR PREDICTING DAMAGE EVOLUTION IN HETEROGENEOUS VISCOELASTIC ASPHALTIC MIXTURES
• PERFORMANCE-BASED FRACTURE CRITERION FOR EVALUATION OF MOISTURE SUSCEPTIBILITY IN HOT-MIX ASPHALT
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• RESULTS OF INTEGRATING SIMPLE PERFORMANCE TESTS AND ENVIRONMENTAL CONDITIONING SYSTEM
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• VARIABILITY OF AIR VOIDS AND MECHANISTIC PROPERTIES OF PLANT-PRODUCED ASPHALT MIXTURES (WITH DISCUSSION AND CLOSURE)
• VERIFICATION OF VOIDS IN COARSE AGGREGATE TESTING: DETERMINING STONE-ON-STONE CONTACT OF HOT-MIX ASPHALT MIXTURES
• WORKABILITY OF HOT-MIX ASPHALT