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Marshal Stability Test Apparatus

Marshal Stability Test Apparatus

Marshal Stability Test Apparatus SL-BT-021
Motorized ASTM: D 1559- T –62.
Generally the test is applicable to hot mix designs using bitumen and
aggregates upto a maximum size of 25mm. In this method, the
resistance to plastic deformation of cylindrical specimen of
bituminous mixture is measured when the same is loaded at
periphery at 5 cm per min. This test procedure is used in designing
and evaluating bituminous paving mixes. The test procedure is
extensively used in routine test programmers for paving jobs. There
are two major features of the Marshall method of designing mixes
namely, a) density – voids analysis b) Stability – flow tests. The
marshall stability of mix is defined as a maximum load carried by a
compacted specimen at a standard test temperature of 60ºC. The
flow value is deformation the marshall test specimen under goes
during the loading upto the maximum load, 0.25 mm units. In this
test and attempt is made to determine optimum binder content for
the type of aggregate mix and traffic intensity.
The apparatus consists of: 1) A loading unit motorized, capacity
5000kgf with two telescopic pillars and an adjustable cross head.
Limit switches are fitted inside to control upward or downward
movement of the pillars. On-off reversing switch and indicator lamps
are on the front side while a hand wheel to manually move the pillars
is on the right. The load frame
Standard Accessories: Marshal Mould:3 Nos, Marshal Rammer:2
Nos, Pedestal :1 Nos, Braking Head:1 Nos

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