Loss on Heating Test

When the bitumen is heated it loses the volatility and gets hardened. About 50gm of the sample is weighed and heated to a temperature of 163°C for 5 hours in a specified oven designed for this test. The sample specimen is weighed again after the heating period and loss in weight is expressed as percentage by weight of the original sample. Bitumen used in pavement mixes should not indicate more than 1% loss in weight, but for bitumen having penetration values 150-200 up to 2% loss in weight is allowed.

Features:-

• ±1°C Digital Temperature Controller
• The exterior is constructed from sheet steel finished in an easy clean powder-coated paint
• Interior chamber is made from stainless steel
• The unit is well insulated and has a double glass door for viewing the test chamber
• The system is controlled by a microprocessor digital controller and overheat thermostat
• Calibrated scale and tamper-proof lock
• Temperature is controlled and pre-set at 163°C +/- 1°C
• Two rotating platforms of 13.5 inches dia are supplied to perform both the tests
• On/Off switch for the turntable motor