Schmidt Hammer & Concrete Hardness Tester
There are a number of Schmidt Hammer options in PCTE's range, the following chart shows the relative strength ranges of each concrete testing hammer device.
Below the chart are the full range of Schmidt hammers for Concrete, Rock, Paper, and Cement / Mortar testing listed out with links to product pages.
Silver Schmidt Live Hammer
The new Silver Schmidt comes in both N and L configurations to estimate concrete strength. It has two distinct advantages over the original Schmidt.
Firstly the new Schmidt hammer measurement using the quotient of the impact and rebound velocities increases the sensitivity in so the hammer test is now possible between 10-100MPa and is not effected by gravity making the unit useful in 360deg of operation with no correction. With the Mushroom Head the range is increased to 5-100MPa.
Secondly this lightweight digital unit connects direclty to an iOS or Android device for data logging, custom curve creation and more.
Original Schmidt Hammer
The classic Original Schmidt concrete test hammer (rebound hammer) is equipped with a sensor which measures the rebound value of a test impact to a high resolution and repeatability. Rebound is an effective non-destructive measurement of the concrete compressive strength (to within 20%) and control of the uniform concrete quality (in-situ concrete and prefabricated structures).
- Type N Schmidt Hammer - the workhorse of the range
- Type L Schmidt Hammer- an impact-energy, three times smaller than the Type N
- Original Schmidt Live - the same mechanism as an original schmidt, with digital data logging
- Type NR & LR Schmidt Hammer - recorded as a bar chart on a paper strip
- Pedulum Hammer - Ideal for testing of low strenght concrete, between 1-5 MPa, or 1-10 MPa with custom conversion curves
RockSchmidt
The RockSchmidt is the first rebound hammer built especially for rock testing applications. Suitable for both field and core sample testing the RockSchmidt supports data logging, loading of cuves for UCS correlations and much more.
Paper Schmidt
PaperSchmidt is the first rebound hammer designed specifically for roll hardness testing. A new measuring principle and a high compliance plunger provide roll-profiling accuracy and repeatability that was unachievable before now. In addition to this it has an extended lifetime to cope with the heavy demands of the paper industry and dedicated tools, such as pre-defined tolerances that make assessing a profile a simple matter.
For an alternative Roll Harness tester, consider the Parotest / Leeb principle -
Test Anvils
Each Original Schimdt test hammer should be checked after 1000 test impacts, a Silver Schmidt after 5000. A testing anvil is used to check whether the rebound test mechanism is working correctly. Cleaning or inspection will be required in case of contamination by very fine cement or due to wear. The all new Silver Schmidt can be calibrated with the same anvils as Digi-Schmidt or Original Schmidts, however the addition of a new collar attachment is required for the anvil to accept the new cross-sectional shape of the Silver Schmidt body.
