The ductility of a bituminous material is measured by the distance to which it will elongate before breaking when two ends of a briquet specimen of the material of a given form are pulled apart, at a specified speed, while immersed in a bath at a known temperature.
Lately, it has become very important to measure also the resistance opposed by the specimen to the elongation.
The apparatus consists of a bath where the liquid media is automatically maintained at a desired temperature in the range from 0 to 40 °C (thanks to a built-in cooling compressor) with an electrically powered tractor to pull apart at an adjustable speed the two ends of two briquet specimens: a load cell records continuously the force applied to the briquets transmitting them plus the bath temperature and the carriage speed to a PC through the RS-232 serial interface: a data acquisition software permits to display data on graphs, store them on the hard-disk and obtain printer reports.
ASTM D 113, D 5976 - IP 32 - ISO 1208 – EN 13398, 13589, 13703
The ductility test gives a measure of adhesive property of bitumen and its ability to stretch.
Traction length: 50cm, 100cm or 150cm
Temperature range: -10°C to 40°C
• Enamel finished steel case, floor mounted with swiveling castors.
• Stainless steel bath thermally insulated: complete with drain valve.
• Chromium plated brass pump for adequate stirring of the liquid in the bath.
• Stainless steel heater.
• Microprocessor thermoregulator with PID action.
• built-in digital display 0.1°C accuracy. Probe: Pt100 RTD.
• Safety device against overheating and low level with alarm lamp.
• Built-in hermetic cooling compressor: CFC/HCFC-free gas.
• Acrylic hinged cover providing a clear view of the inside.
• Traction carriage with two-speed motor for 10 and 50 mm/min
• Automatic stop safety switch
• White bath bottom for a more clear vision of the elongated specimen
• Easy access control box containing all the electronics
• For 220 V/50 Hz connections: 1800 W power consumption.