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Overview
Used for determining the breaking point of solid and semi -solid bitumens. The Fraas Breaking Point is the temperature at which bitumen first becomes brittle, as indicated by the appearance of cracks when a thin-film of the bitumen on a metal plaque is cooled and flexed in accordance with specified conditions.
Specification
The instrument is composed of outer cylinder, temperature preservation cylinder, thermometer, lower plate, upper grip, fixing rod, base, guide rail, sweeping block, handle, steel sheet and so on.
The temperature preservation cylinder is a double layer glass cylinder. It is used to place the dry ice and ethylalcohol mixtures. It is the cooling unit.
The lower plate and upper grip are metal sheets.
The fi xing rod and movable rod are made of fabroil.
The base, guide rail, sweeping block and handle are used to changer the relative position of fi xing rod and movable rod to make the sample sheet bending.
Thermometer: -30°C~+100°C,
division value 1°C
Size of sample sheet: 41mm×20mm×0.15mm
Maximum clamp distance: 44mm
Step height difference: 3.5mm
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