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.jpg "Concrete Test Hammer (Small) For Testing Lab")
CAT NO: DIDACTICNLE-Export-038003
The concrete test hammer is an instrument which is easy to use, for
quick and approximate measurement of the resistance to pressure of
manufactured concrete products..
Cement and Concrete Testing Lab equipment manufacturers,exporters and Cement and Concrete Testing Lab suppliers The principles on which it works are
based on the rebound impact of a hammer on a piston which rests against
the surface of the concrete products. The Greater the resistance of the
concrete, greater is the rebounded impact. By reading this rebound
impact on a scale and relating it to curves on graphs supplied with the
instrument, the resistance to compression in MPa or PSI can be found,
with 20% of actual.
Salient Features
Consists of a barrel in which is housed a hammer mass attached to an impact spring which slides on a guide bar.
A
plunger is attached to the guide bar which is pressed against the
surface to be tested. As the piston is pressed against the surface to be
tested, on reaching the compressive strength, the hammer mass is
released and rebounds to a certain extent (according to the strength of
the surface) which is indicated by a rider on a calibrated scale.
A
lock button fixed on the body of the hammer locks the rider in place
and the rider can be recared to zero position by using the same button.
The equivalent compressive strength can be computed from the chart supplied.
Each
hammer is calibrated against at standard test hammer, and is suitable
for specimen of compressive strengths 100 - 700 kg/cm.
The instrument, complete with a grinding stone for polishing the test surface, is supplied in carrying case.
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