00743196

Component

https://doi.org/10.3141/1590-13

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

Coarse matrix high binder (CMHB) is a gap-graded hot mix consisting of a large proportion of coarse aggregate with an asphalt binder-filler mastic. CMHB and dense-graded mixtures were compared in terms of their resistance to rutting (permanent deformation), moisture damage, aging, and water permeability. A static creep test was performed to evaluate relative rutting susceptibility. Moisture damage was assessed with the tensile strength ratio (TSR) and a boiling-water test. The effects of aging were evaluated with indirect tensile strength and resilient modulus testing. Penetration and complex shear modulus (G*) of the recovered, aged asphalt were measured. Permeability was determined with Darcy's Law for flow through saturated, porous media. The static creep test did not indicate that CMHB mixtures were consistently more resistant to rutting in comparison with dense-graded mixtures. CMHB mixtures were found to be more resistant to moisture damage, which was indicated by higher TSR values and less visible stripping than corresponding dense-graded mixtures. The dense-graded mixtures exhibited higher resilient moduli and indirect tensile strengths after short-term and long-term aging. Penetration of binder extracted from aged CMHB mixtures was greater than that from dense-graded mixtures. Binder extracted from aged dense-graded mixtures exhibited higher G* values. The permeability of CMHB mixtures was greater than that of the dense-graded mixtures with comparable air voids.

This paper appears in Transportation Research Record No. 1590, Asphalt Mixture Quality, Characteristics, and Performance.

English

p. 108-117

1997

Transportation Research Record

0309061636

Figures (5) ; References (6) ; Tables (7)

Aging (Materials); Alternatives analysis; Creep tests; Deformation; Dense graded aggregates; Hot mix asphalt; Loss and damage; Mixtures; Modulus of resilience; Moisture damage; Pendulum tests; Permeability; Rutting; Shear modulus; Stripping (Pavements); Tensile strength; Tension tests; Water

Dense graded mixes; Indirect tensile test

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Nov 24 1997 12:00AM

• ANALYSIS OF PAVEMENT RUTTING DATA FROM FHWA PAVEMENT TESTING FACILITY SUPERPAVE VALIDATION STUDY
• DESIGN, CONSTRUCTION, AND ANALYSIS OF PAVEMENTS USING ACCELERATED LOADING FACILITY
• DEVELOPMENT OF TEMPERATURE-EFFECT MODEL FOR PREDICTING RUTTING OF ASPHALT MIXTURES USING GEORGIA LOADED WHEEL TESTER
• EFFECT OF AGGREGATE DEGRADATION ON SPECIMENS COMPACTED BY SUPERPAVE GYRATORY COMPACTOR
• EVALUATION OF RUT-RESISTANT PROPERTIES OF ASPHALT MIXES UNDER FIELD AND LABORATORY CONDITIONS
• FRACTURE MORPHOLOGY AND FRACTURE TOUGHNESS MEASUREMENT OF POLYMER-MODIFIED ASPHALT CONCRETE
• FULL-SCALE RUTTING TESTS OF LARGE-STONE ASPHALT MIXTURES
• INTERPRETATION OF INDIRECT TENSION TEST BASED ON VISCOELASTICITY
• LONG-TERM OVEN-AGING EFFECTS ON FATIGUE AND INITIAL STIFFNESS OF ASPHALT CONCRETE
• SELECTING MOST DESIRABLE HOT-MIX ASPHALT MIXTURES
• TEST METHODS FOR EVALUATION OF COLD-APPLIED BITUMINOUS PATCHING MIXTURES
• THEORETICAL EVALUATION OF POISSON'S RATIO AND ELASTIC MODULUS USING INDIRECT TENSILE TEST WITH EMPHASIS ON BITUMINOUS MIXTURES