Schleibinger Testing Systems

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Durability is, beneath the strength, one of the most important properties of concrete. It depends on the type of building and the environmental conditions. it is especially in road construction that a high resistance to freeze-thaw cycles is of major importance and is thus one of the major criteria in testing.The CDF-/CIF test set-up enables the freeze-thaw test to be carried out in accordance with CDF recommendations from RILEM, CEN/TS 12390-9 and CEN/TR 15177 2006-06. The advantage of this test method is in the very good reproducibility of the results that are given. With this test procedure,  the weathered quantity of a surface is measured by a number of freeze-thaw cycles. The test specimens are thereby placed in a solution of sodium chloride to stress the surface. The result gives an estimate for the resistance to freeze-thaw cycling for the concrete being tested.  The CDF machine fits also the requirements for the ASTM C666-A. 


Schleibinger is building the CDF freeze/thaw tester since 1994, The development of this machine is based on a contract with the the inventor of the procedure and machine Prof. M.J. Setzer, University of Essen, Germany. Quality and design was improved continously. 

The most important features of the machine:

  • A big colored TFT-display with touch screen for the graphical display of the temperature recordings
  • Controller with self-test functions and and a easy to use human-machine interface
  • Internet and network interface for controlling the machine from every PC or mobile phone word wide
  • Silent due to the hermetic encapsulated scroll type cooling machine, and a noise insulated machine housing
  • Reliable, high quality magnetic valves with low voltage control.
  • Self test of all liquid levels, coolant low and high pressures, over-temperature and supply voltages
  • Automatic circuit breakers for each electrical component
  • Redundant semiconductor and mechanical switch for the electrical heating unit.
  • All tubes and valves are Armaflex® isolated to keep dry during freeze thaw cycles.
  • All wet parts made of stainless steel, copper or brass
  • Basic construction made of powder coated aluminum


Test Procedure

Preparatory work begins seven days after casting the specimen. The test specimens are stored in a climatic chamber at a temperature of 20 °C and a relative humidity of 65 %. The side faces of the test specimens are sealed five days before the end of dry storage using aluminum foil and butyl adhesive.

 Capillary suction commences after the 28th day and continues for seven days, hereby the increase in weight by the test specimens is measured after 2, 3, 4 and 7 days. Capillary suction is then followed by freeze-thaw- cycling in the CDF machine. The quantity thereby weathered is measured after 4, 14 and 28 days.



Also prepared for the following standards :


Technical Data


test cab dimensions (WxLxD)

171 x 51 x 20 cm

for 10 container GN-B 1/2 or 15 containers GN-B 1/3

temperature range

-20°C to 20 °C

max. temp. deviation

< 0.5 K

dimensions (LxWxH)

225 x 95 x 120 cm

required room (LxW)

350 x 160 cm


6 kW (10.5 kW with ASTM / cube  test option)

required fuse

3 x 25/32 A 


560 kg

environmental conditions

5 .. 28 °C, max. humidity 65 %

Technical data may be changed w/o notice.  


Freeze-thaw testing - Literature review, March 2013, Report number: VTT-R-07364-12, Affiliation: VTT technical Research Centre of Finland, Miguel Ferreira, Hannele Kuosa, Markku Leivo, DOI: 10.13140/2.1.3736.8000

IDENTIFICATION OF OPTIMAL CONDITION FOR THE DE-ICING SALT SCALING RESISTANCE OF CONCRETE, January 2016, Conference: International RILEM Conference on Materials, Systems and Structures in Civil Engineering
Conference segment on Frost Action At: Lyngby, Denmark, Samindi M.K. Samarakoon, Samdar Kakay, Lieske Tefre, Vikrant Kaushal

International RILEM Conference Materials Systems and Structures in Civil Engineering 2016 (MSSCE 2016) on Frost Action in Concrete, Edited by Marianne Tange Hasholt, Katja Fridh and R. Doug Hooton, ISBN: 978-2-35158-182-7
e-ISBN: 978-2-35158-183-4, Pages: 251, Publication date: 2016

Salt-frost Attack on Concrete - New Findings regarding the Damage Mechanism, Matthias Müller, Dissertation, Bauhaus Univ. Weimar, 2021


Data Sheet

A presentation about the machine and the test procedure

User Manual

Video about the CDF test

Installation and first setup of the CDF machine


Last edited: July 14, 2023, 12:57


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