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Concrete Test Hammer HT-225A/HT-75/HT-20

Concrete Test Hammer HT-225A/HT-75/HT-20

Product Description

Product Description

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.


HT-225A is used for testing the strength of various concrete members (slab, beam, column, truss) of normal building

strength and bridge.

Concrete Test Hammer HT-225A - HT-75 - HT-20 4.jpg


HT-75 is used for testing small and impact-sensitive parts of concrete or artificial brick.

HT-20 is used for testing mortar or clay of products.

Concrete Test Hammer HT-225A - HT-75 - HT-20 4.jpg


Specifications

ModelHT- 225AHT- 75HT- 20
Measuring range10-70N/mm21-25N/mm2
Impact energy0.225kgm0.075kgm0.020kgm
(2.207Nm)(0.735Nm)(0.196Nm)
Maximum breakdown friction of rider0.49-0.78N(50-80g)0.5±0.10N

Meanvalue of steel - anvil 

rating of hammer

80±274±2
Punch advance for impact hammer75mm
Applicationfor testing ordinary building and bridge, constructionfor testing small and impact-sensitive parts of concrete or artificial brickfor testing mortar products
Dimension (mm)φ60x280
Net weight1.0kg
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


Standard package - HT-75

HT75 main unit 1

Grinding wheel 1

Operation manual 1

Carrying case 1


Standard package - HT-20

HT20 main unit 1

Grinding wheel 1

Operation manual 1

Carrying case 1




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