The Marshall Stability Machine is used to determine the load and flow values of bituminous mixtures.
The Marshall is composed of a robust and compact two-column frame with an adjustable upper cross beam driven by an electro-mechanical ram with a maximum capacity of 50 KN and a data acquisition and processing system.
The Marshall Stability Machine can be hand operated by a lateral hand wheel for calibration purposes. The mechanical jack raises the lower cross beam at a constant speed of 50.8 mm/min.
The limit switches are provided for both, bottom and top limit of travel.
The Automatic measuring system consists of a 50KN capacity strain gauge load cell that is fitted to the upper cross beam to read stability values and 25 mm x 0.001 mm displacement transducer fitted to Break Head.
The Manual measuring system consists of a 50 KN capacity load ring and dial gauge graduated 0.01 mm with 25 mm travel.
The vertical rise speed of the test apparatus tray:
50±5mm/min
Maximum movement distance of the test apparatus pallet:
70mm
Working range of force value:
0 – 50.00kN
Working range of displacement:
0 – 10.00mm
Measuring accuracy of force measuring device:
±0.1kN
Displacement measuring device measuring accuracy:
0.01mm
Working voltage:
220V 50Hz AC
Specification of motor:
220V, 0.37KW, 1440rpm, three-phase operation
Maximum rated load:
50KN
Using conditions:
Ambient temperature 0℃-60℃ Relative temperature <85%
