Tenders Description & Specification for Refrigerated Ductility Test System
Refrigerated Ductility Test System
Specification: With refrigeration system and micro-processor based
digital temperature controller. Ductility is defined as distance in cm
to which a standard briquette of bitumen can be stretched before the
thread breaks. The briquette is stretched at a rate of 50 mm/min.± 2.5mm
per minute at a temperature of 27°c ± 0.5°C. The machine is having
built in refrigeration system to work a below ambient temperature up to
8°C in tropical conditions. The machine will operate at 27°C with
control accuracy of ± 0.5°C as per the requirement of IS. The apparatus
consists of water bath with a heater, and a circulating pump to maintain
uniform water temperature .
One half of the briquette moulds is fixed in a fixed plate in the water
bath, the other half of the briquette mould is fixed to a carrier which
slides over a rotating threaded shaft with a clutch, the motor and gears
to rotate the shaft are housed in a cabinet fixed above the other end
of the bath. A pointer fixed to the carrier moves over. A scale
graduated from 0-100 cm x 1mm fixed on the bath with "0" (zero) of the
scale towards the fixed plates side. The rotating shaft has 2 speeds of
travel for the bracket, 5 cm/min. And 1cm/min.
Selected by a clutch. Water bath inside is of stainless steel with
insulation and water drain cock . A heater with is fitted inside the
water bath. The temperature is controlled by dual display microprocessor
based auto tuning PID digital temp. Indicator cum controller. Control
switches for motor, stirrer, heater and indicator lamps are fixed at a
convenient place on the water bath. Complete with three briquette moulds
and one base plate, all supply single phase. As per IS 1208.
Ltekonline are the manufacturers of Refrigerated Ductility Test System used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Bitumen Asphalt Testing Lab Equipment for Engineering Teaching Lab in Universities
Categories: Bitumen Asphalt Testing Lab Equipment