Testing Laboratories

Testing Laboratories

The Testing Laboratories of MICHAEL M. TSONTOS SA are well-equipped and staffed with personnel with many years of experience in the field and verified by International standards accreditation. Equipment and know-how enable material tests to be carried out:

  • Soil – aggregates
  • Concrete
  • Asphalt

The Testing Laboratories provide adequate and properly designed spaces for the reception and maintenance of the samples and the execution of the tests. The venues are complemented by corresponding office spaces, which are used by the staff of the Laboratory to perform their administrative tasks.

The implements and apparatuses of the Testing Laboratory of MICHAEL M. TSONTOS SA, used for testing and other auxiliary equipment and installations, have been selected to meet the requirements of applicable standards and specifications and at the same time to ensure required environmental and other conditions for the proper and intact process of the tests and the protection of the health and safety of the Laboratory staff.

The entire operating procedures of the Testing Laboratories are integrated into the Quality Management System of the Company and are certified by ISO 9001:2015 by the Certification Body TUV NORD CERT.

Testing Laboratories

Ground – aggregate

  • Determination of Ground & Rock Humidity
  • Determination of Water Limit and Plasticity Limit
  • Granulometric analysis of lecithin and coarse aggregates
  • Determination of Lighter Thickness of No. 200 Sieve in Aggregates
  • Determination of Thinner Slime Material No. 200 in Soil
  • Determination of Equivalent Sand
  • Determination of Specific Weight and Water Absorption of Coarse- grained Materials
  • Land Site Determination (Sand Cone)
  • Determination of Soil Density Site (TROXLER)


  • Determination of Bending of Concrete Tests
  • Determination of Strength of Grit Concrete Tests
  • Concrete Strength Testing of Grit Concrete with Capsule (Bore)
  • Test of Sedimentation
  • Specifying of Content of Air


  • Determination of apparent specific gravity of condensed bituminous mixtures (Open Type)
  • Determination of apparent specific gravity of Concentrated Bituminous Mixtures (Closed Type)
  • Determination of Asphalt Bitumen Rate
  • Granular Analysis of Aggregate Asphalt Mixtures
  • Determination of Degree of Concentration of Bituminous Mixtures (TROXLER)


  • Aggregate-Ground Sampling
  • Fresh Concrete Sampling
  • Sampling of Hardened Concrete Horns from Horizontal Elements
  • Sampling of Asphalt or Bituminous Materials
  • Asphalt Sampling


  • Concrete bending press
  • Concrete specimen compression press
  • Chamber of preservation
  • Fresh concrete air measuring device
  • Oven
  • Plasticity-moisture limitation calculation
  • Equivalent sand set
  • Sand condensation kit
  • TROXLER Condensation measuring device
  • Extractors
  • Electric sifter
  • Scales
  • Sieves
  • Sedimentation test
  • Weighing kit in water
  • Thermometers
  • Cubic essays
  • Prismatic essays
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