00800094

Component

https://doi.org/10.3141/1712-10

http://scholar.google.com...bane&publication_year=2000

Trichloroethylene is a solvent currently used by the Florida Department of Transportation (FDOT) and many state highway agencies for separation of asphalt binders from asphalt paving mixtures in their quality control programs. However, it has been proved that trichloroethylene contributes to ozone depletion, and it is also known to be a carcinogen. The goal of the present study was to determine whether a more environmentally sound and less hazardous solvent could be used for this purpose. The solvent investigated is an n-propyl bromide with the trade name EnSolv. Preliminary studies show that it is safer than many other solvents available today. The study was performed to determine whether EnSolv could be a substitute for trichloroethylene without changing current testing methods. The tests performed included the asphalt solubility test, extraction and recovery of asphalt binders from mixtures, and penetration and viscosity tests with the recovered binders. The results of the study showed that EnSolv could be a suitable replacement for trichloroethylene. In addition, EnSolv could also be recycled and reused in the extraction and recovery procedures.

This paper appears in Transportation Research Record No. 1712, Construction 2000.

English

p. 79-85

2000

Transportation Research Record

0309066913

References (7) ; Tables (6)

Asphalt; Binders; Chemical analysis; Construction; Environmental impacts; Quality control; Soil penetration test; Solubility; Solvents; Test procedures; Viscosity

Extraction (Chemistry); Trichloroethylene

Construction; Environment; Highways; Materials; I31: Bituminous Binders and Materials; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Oct 3 2000 12:00AM

• ANALYSIS OF QUALITY CONTROL AND QUALITY ASSURANCE DATA FOR SUPERPAVE MIXES
• COARSE SUPERPAVE MIXTURE SENSITIVITY
• COLD-WEATHER CAST-IN-PLACE SEGMENTAL CONSTRUCTION FOR LONG-SPAN BRIDGES
• COMPARATIVE ANALYSIS OF VOLUMETRIC PROPERTIES FOR SUPERPAVE GYRATORY COMPACTORS
• CONSTRUCTION PRODUCTIVITY AND CONSTRAINTS FOR CONCRETE PAVEMENT REHABILITATION IN URBAN CORRIDORS
• CONSTRUCTION-RELATED TEMPERATURE DIFFERENTIALS IN ASPHALT CONCRETE PAVEMENT: IDENTIFICATION AND ASSESSMENT
• DETERMINING MINIMUM CONTRACT TIME FOR HIGHWAY PROJECTS
• DEVELOPMENT OF COMPOSITE QUALITY MEASURES
• EFFECT OF LIME ON IGNITION FURNACE CALIBRATION
• EVALUATION OF NOTCHED-WEDGE LONGITUDINAL JOINT CONSTRUCTION
• FACTORS AFFECTING OVERLAY RIDE QUALITY
• FLEXURAL CAPACITY OF COMPACT AND NONCOMPACT HIGH-PERFORMANCE STEEL PLATE GIRDERS
• ILLISIM PROGRAM FOR END-RESULT SPECIFICATION DEVELOPMENT
• KENTUCKY CONTRACT TIME DETERMINATION SYSTEM
• MEASURING SMOOTHNESS OF VIRGINIA'S ASPHALT OVERLAYS
• METHOD TO MODEL PERFORMANCE RELATIONSHIPS AND PAY SCHEDULES
• METHODS FOR CONTROLLING STRESSES AND DISTORTIONS IN STAGE-CONSTRUCTED STEEL BRIDGES
• NONPARAMETRIC APPROACH TO MANAGING MATERIALS QUALITY
• PARTNERING ON A DESIGN-BUILD PROJECT: MAKING THE THREE-WAY LOVE AFFAIR WORK
• QUANTIFIED CHECKLISTS FOR CONSTRUCTION INSPECTION EXAMINATION
• RAPID BRIDGE DECK REPLACEMENT WITH FULL-DEPTH PRECAST CONCRETE SLABS
• STUDY OF COMPACTION DENSITY IN CLOSED FORM
• TOP-DOWN CRACKING OF RIGID PAVEMENTS CONSTRUCTED WITH FAST-SETTING HYDRAULIC CEMENT CONCRETE