Marshall Stability Test Apparatus

For the measurement of the resistance to plastic flow of cylindrical specimens of bituminous pouring mixture loaded on the lateral surface. This is for use with hot mixture containing asphalt or tar and aggregate upto 25 mm maximum size. The equipments comprises the following:

Three specimen moulds, cylindrical 100 mm dia
Three base plates.
Three collars 100 mm dia
Two compaction hammers, 10 lbs. Weight, with 45 cm drop.
One specimen extractor.
One compaction pedestal complete with specimen holder.
One breaking head assembly. Complete with dial micrometer and bracket for flow measurement.
One load transfer bar.
One loading unit, motorized, with travel of 50 mm/min and fitted with motor, reversing switch and limit switches to restrict the travel. Fitted with hand wheel for finer adjustment to bring the proving ring in contact with breaking head assembly, capable of application of loads upto 5000 kg. Suitable for operation from Main supply 230 volts, 50 cycles, single phase, A.C..

Proving ring of 5000 kg (50 K.N.)

Dial gauge .01 mm x 25 mm travel.