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Rebound Hammers

Schmidt OS-120

Pendulum hammer for testing on softer material such as lightweight concrete, gypsum boards, fresh concrete and mortar used for brickwork joints
  • Compressive strengths below 5 Mpa
  • Large, half circular scale with high resolution
  • Two models for fresh concrete and mortar applications

Applications:

Estimation of early strength development of concrete / Estimation of mortar strength of brickwork

Designed to test on softer materials accurately and below 5Mpa
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Resolution & depth
Only rebound hammer that provides a test result at compressive strengths below 5 Mpa.
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Versatility
Large, half-circular scale with high resolution.
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User Experience
Two models for fresh concrete and mortar applications.

Swiss Made
Schmidt OS-120 Tech Specs
Sensor
Tech Specs
Impact Energy
0.833 Nm

Compressive Strength Range
1 to 5 N/mm2 (145 to 725 psi)

Display
Mechanical display

Innovation Award
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FAQ
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Standards & Guidelines

Guidelines

Asia-Pacific
  • Arrow Austrian Guideline for tunnel lining, published December 2012. Austrian Construction Association
  • Arrow TNO Report BI -88-009/61.8.2060-VOE from IBBC Delft Netherlands (Mortar joint testing)