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Testing laboratory for earthworks and road construction

Testing laboratory for earthworks and road construction

In our testing laboratory for earthworks and road construction, we carry out self-monitoring tests, control tests and suitability tests in the field of soil and soil improvement as part of quality assurance in accordance with ZTV E-StB, ZTV A-StB and ZTV SoB-StB.

For temporarily flowable, self-compacting backfill materials (ZFSV), so-called liquid soil, we offer all tests for formulation and quality assurance.

  • Plate load test according to DIN 18134
  • Dynamic plate load test with light drop weight device according to TP BF-StB, Part B 8.3,
  • PANDA pile driving probe with variable impact energy according to the French standard especially for compaction testing in pipeline trenches (SolSolution)
  • Dynamic probing according to DIN EN ISO 22476-2
  • Sieving of mineral grains according to DIN EN 933-1
  • Density determination according to DIN 18125 -2A, -2B and 2F
  • Proctor tests according to DIN 18127
  • Single-point and three-point proctor test according to TP BF-StB, Part B 6.6
  • Uniaxial compressive strength according to TP BF-StB C 1
  • CBR test TP BF-StB, Part B 7.1
  • In-situ large shear tests according to Kobler to determine the shear strength?
  • Suitability tests for soil improvement with binding agents according to TP BF-StB/B 11.3
  • Suitability tests for self-compacting backfill materials in accordance with the H ZFSV instructions (FGSV No. 569)

Contact person


Thorsten Widmann, M. Eng.
Head of testing laboratory for earthworks and road construction

Widmann(ät)smoltczykpartner.de