Original Schmidt Concrete Test Hammers
Article No. 11765
Schmidt Concrete Test Hammer Type N PSI
The classic Original Schmidt hammer is the basis of every major rebound hammer testing standard worldwide. There are various models with different impact energies to cover a wide range of applications. They have a proven durability and quality compared with low cost copies.
Features
- Two types of Concrete Test Hammers available:
- Type N Schmidt Test Hammer is designed for testing concrete items 4” (100 mm) or more in thickness, or concrete with a maximum particle size less than or equal to 1.25” (32 mm). Type N hammer is also used for the testing of massive rock. Impact energy is 1.6 ft-lbs (2.207 Nm). Units have 1,450 psi to 18,150 psi (10 to 70 N/mm2) compressive strength. Testing Standards for N: ASTM C 805, D5873; BS 1881: Part 202
- Type L Schmidt Test Hammer operates with significant lower impact energy, making this hammer the ideal option for testing thin walled items with a thickness between 2” and 4” (50 to 100 mm) or for testing small components. The Type L is suitable for testing cast stone components which are sensitive to impact. In rock mechanics, the Type L hammers are commonly used for classification testing of rock cores and brittle rock. Testing Standards for L: ASTM D5873; ISRM Suggested Method for Rebound Index of Rock Cores.
- Mechanical Display
- Compressive strength range: 10 to 70 N/mm2 (1,450 to 10,152 psi)
- Applications: Paper (Type L), Concrete, Geology, Uniformity testing, In-situ strength estimation, Rock testing, Large paper rolls
Technical Attributes
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- Data
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Original Smith Concrete Test Hammer Technical Data Mechanical Data Type N Type L Impact Energy: 2.207 Nm (1.63 lb ft) 0.735 Nm (0.54 lb ft) Concrete Compressive Strength Range: 10 to 70 N/mm2 (1,450 to 10,152 psi) Electrical Data Display: Mechanical
More Information
Original Schmidt Hammer Applications:
- Concrete
- Geology
- Uniformity testing
- In-situ strength estimation
- Rock testing
- Large paper rolls
Standards
Original Test Hammer: EN 12504-2, EN 13791; ASTM C805; ROCK 22690; ACI 228.1R; RILEM TC-ISC
Procedure
- To operate the concrete test hammer first place the impact plunger against test surface
- Apply pressure until plunger disappears
- The hammer will release.
- The scale pointer reading gives rebound value in percent of the forward movement of the hammer mass.
Delivery Content
Original Schmidt Concrete Test Hammer - Test Hammer, carrying case, grinding stone and operating instructions.