THE EFFECT OF VARIABLES IN THE COMPOSITION OF CUTBACK BITUMENS ON THEIR RATE OF CURE IN SURFACE DRESSINGS
The effects of variables in the composition of cutback bitumens upon their rate of cure in surface dressings has been investigated by a combination of laboratory and roof weathering tests and binder viscosity monitoring in actual surface dressings. In the laboratory investigations a series of blends was prepared using bitumens of varying penetration with two types of cutback oil. The effect of these variations on standard test properties and their performance in laboratory weathering tests has been studied. Changes in viscosity were measured by sliding plate microviscometer and equiviscous temperature measurements and oil losses were monitored by a specially developed gas liquid chromatographic procedure. The rate of change of viscosity of commercial grades of cutback bitumens on exposure in thin films on the roof of a building was measured. In this procedure the hardening after one year was approximately twice that occuring, typically, in a surface dressing. (TRRL)
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Corporate Authors:
National Institute for Phys Planning & Constr Res
St Martin's House, Waterloo Road
Dublin 4, Ireland -
Authors:
- Jamieson, I L
- Publication Date: 1983-12
Media Info
- Features: Figures; References; Tables;
- Pagination: 66 p.
Subject/Index Terms
- TRT Terms: Binders; Bitumen; Concrete curing; Concrete hardening; Gas chromatography; Hardness; Liquid asphalt; Liquid chromatography; Losses; Materials selection; Mix design; Oils; Pendulum tests; Seal coats; Temperature; Tests; Variables; Viscosity; Weathering
- Old TRIS Terms: Cut back
- ITRD Terms: 4948: Binder; 4702: Curing (concrete); 4983: Cut back bitumen; 4722: Hardening; 4714: Mix design; 4961: Oil; 6285: Penetration; 2984: Surface dressing; 6255: Test; 5936: Viscosity; 5281: Weathering
- Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 00391082
- Record Type: Publication
- Source Agency: An Foras Forbartha Teoranta
- Report/Paper Numbers: RC 265 Monograph
- Files: ITRD, TRIS, ATRI
- Created Date: Mar 29 1985 12:00AM