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Schmidt Hammer / rebound hammer HT-225A for Civil Engineering, Construction
HT 225A of Concrete rebound test hammer is used for testing the
strength of various concrete members (slab, beam, column, truss) of
normal building strength and bridge.
HT 225A of Concrete rebound test hammer is used for testing the
strength of various concrete members (slab, beam, column, truss) of
normal building strength and bridge. When testing the strength of
concrete, the concrete test hammer uses a certain elastic force to
transit the impact force of an impact hammer to the surface of
concrete, its initial kinetic energy redistributes, a part of
energy in the form of plastic deformation or residual deformation
is adsorbed by the concrete, and another part of energy which is
proportional to the surface hardness is transmitted to the impact
hammer, making the hammer resile to a certain height, then the
strength of the concrete is derived from the proportional relation
between the height of resilience and the concrete strength. With
the merits of simple structure, easy correction, maintenance and
repair, and portability, the concrete test hammer is widely used in
civil engineering and construction industry for testing the
strength of concrete. Compared to other nondestructive testers, the
concrete test hammer is an economical and practical nondestructive
testing instrument.
Specifications
Model | HT-225A |
Measuring range | 10-70N/mm2 |
Impact energy | 0.225kgm (2.207Nm) |
Maximum breakdown friction of rider | 0.49-0.78N(50-80g) |
Mean value of steel - anvil rating of hammer | 80±2 |
Punch advance for impact hammer | 75mm |
Application | for testing ordinary building and bridge construction |
Dimension (mm) | φ60x280 |
Net weight | 1.0kg |
Standards | ISO/DIS 8045, EN 12504-2, ENV 206, DIN 1048 part 2, ASTM C 805, ASTM D 5873, NFP 18-417, B 15-225, JGJ/T 23-2001, JJG 817-1993 |
Standard package - HT-225A
HT225A main unit 1
Grinding wheel 1
Screw driver 1
Spring 1
Operation manual 1
Carrying case 1