ALABS-A11-021
Categories: Bitumen Testing Equipment
Hardness Tester For Mastic Asphalt
Hardness Number is defined as the figure denoting the depth in hundreds
of a centimeter, to which a flat ended identation pin in the form of a
steel rod 6.35 mm in diameter will penetrate the mastic under a load of
31.7 kg applied for 60 seconds, the temperature being maintained at 35′
+/- 0.5′ C or 45′ +/- 0.5′ C. the unit is complete with load release
mechanism.
General Description & Specifications:
The apparatus consists of a frame supported by means of four leveling
screws.On the top plate ,a lever with a counter balances weight and a
load hanger is fixed .The ration of the lever to weight is such that
when the weight is kept on the hanger ,the ultimate load acting on the
penetration pin is 31 kg. A thermometer is fixed by a clip ,which
records the temperature of the water in the container .
The load transfer bar passes through the support bracket and rest on the
specimen . The penetration load can be adjusted and locked before the
test is conducted .An adjustable ring is provided on the load transfer
bar and a rest point.The dial gauge of 0.01 mm accuracy to record the
depth of penetration is also provided .The ring can be adjusted and
locked in position for initial setting of dial gauge. A cam which is
operated by the handle is provided to lock or free the load transfer bar
.
Hardness Tester For Mastic Asphalt ALTEC Laboratory Equipments and ALTEC Laboratory Instruments Tenders.