IKT

IKT – Institute for Underground Infrastructure

Concrete, component and method tests

Vertical-compression test on a DN500 reinforced-concrete pipe

Vertical-compression test on a DN500 reinforced-concrete pipe

Products subject to mandatory technical approval are required to undergo strict quality monitoring. IKT, as an officially designated test, monitoring and certification centre, validates the following, for example:

  • Pipes
  • Manholes
  • Special shapes

in concrete, reinforced concrete and vitrified clay, including the associated pipe joints and sealing elements and agents.
IKT also acts as a test centre for the “Güteschutz Beton NRW” (BGB) concrete quality assurance organisation.

Self- and third-party supervision

Deformation of manhole joints under vertical compressive load

Deformation of manhole joints under vertical compressive load

IKT test centre offers its customers the following services for self- and third-party monitoring to European Standards:

  • Concrete pipes, reinforced-concrete pipes, and shapes
    DIN EN 1916 and DIN EN 1201
  • Concrete and reinforced-concrete prefabricated manholes/manhole components
    DIN EN 1917 and DIN V 4034
  • Elastomer sealants
    DIN EN 681 and DIN 4060
  • Paving stones
    DIN EN 1338
  • Paving slabs
    DIN EN 1339
  • Kerbstones
    DIN EN 1340
  • Surround stones and water-permeable paving stones
    BGB code for non-standardised concrete products

Large and diverse range of tests possible

Deformation of manhole joints under vertical compressive load

  • Elastomeric pressure-transmission elements
  • Vertical deformation under dynamic traffic loads is a vital factor
    in accordance with the DIN V 4034, Part 1 manholes standard.
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    Pressure-transmission elements for pipe jacking

    Testing pressure-transmission elements for pipe jacking

    Testing pressure-transmission elements for pipe jacking

    • Deformation behaviour of pressure-transmission elements during pipe jacking as specified in accordance with DWA Standard A161

     

     

     

    Sealing width of elastomeric sections for concrete and reinforced-concrete pipes

    Testing elastomeric sections for concrete and reinforced-concrete pipes

    Testing elastomeric sections for concrete and reinforced-concrete pipes

    • Determination of sealing width, contact pressure distribution and maximum deformation
    • Knowledge of contact pressure distribution is important for the development of sealing sections and of pipes
    • Measurement by means of pressure-sensitive films
    • in accordance with DIN EN 1916

     

     

     

     

    1:1 scale method tests

    1:1 scale method validation tests; here: injection method for sewer laterals

    1:1 scale method validation tests; here: injection method for sewer laterals

    • Injection tests on the medium-format test stand
    • Injection tests for the repair of sewer laterals
    • Checking of tightness against extraneous water by means of flooding of the test stand
    • Service-life two months
    • Tests on buried conduits

     

     

     

     

    Modified vertical-compression test on large-calibre pipes

    Modified vertical-compression test on large-calibre pipes

    Modified vertical-compression test on large-calibre pipes

    • Vertical and horizontal test forces are transmitted into a pipe simultaneously
    • Highly authentic moment/normal force loads
    • Actual cracking performance is reliably simulated
    • Important for the assessment of crack widths and crack lengths in on-site acceptance inspection of large-calibre pipes

     

     

     

     

    Tightness testing of DN1600 jacking pipes

    Tightness testing of a pipe string: DN1600, reinforced concrete, length 11 m, filled with 22 m³ of water and pressurised to 10 m w.g.

    Tightness testing of a pipe string: DN1600, reinforced concrete, length 11 m, filled with 22 m³ of water and pressurised to 10 m w.g.

    • Measurement of water uptake
    • Visual checking of tightness
    • Test pressures up to 2.5 bar
    • in accordance with DIN EN 1916 and DIN EN 1201

     

     

     

     

     

    Vertical-compression tests on DN1600 jacking pipes

    Vertical-compression tests on DN1600 jacking pipes

    Vertical-compression tests on DN1600 jacking pipes

    • Exposure to vertical compressive loads
    • Measurement of crack widths
    • Measurement of ultimate compressive strength
    • Checking of concrete cover and reinforcement
    • in accordance with DIN EN 1916 and DIN EN 1201

     

     

     

     

    Shear-load tests on DN300 pipes

    Test apparatus: Will the socket stay tight even under shearing load?

    Test apparatus: Will the socket stay tight even under shearing load?

    • Tightness testing under shearing load in the pipe joint
    • Visual checking of tightness
    • in accordance with DIN EN 1916 and DIN EN 1201

     

     

     

     

     

     

    Determination of longitudinal flexural strength on DN300 pipes

    Determination of longitudinal flexural strength on DN300 pipes

    Determination of longitudinal flexural strength on DN300 pipes

    • Bending load in the pipe-length direction
    • Taking account of inadequate support
    • in accordance with DIN EN 1916 and DIN EN 1201

     

     

     

     

     

     

    Strength in compression of concrete cubes

    Testing strength in compression of concrete cubes

    Testing strength in compression of concrete cubes

    • Quality Assurance for finished components and in-situ concrete
    • in accordance with DIN EN 12390

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Measurement of concrete and reinforced-concrete pipes

    Measurement of concrete and reinforced-concrete pipes

    Measurement of concrete and reinforced-concrete pipes

    • Checking of dimensional tolerances
    • Also important for tightness
    • in accordance with DIN EN 1916 and DIN EN 1201

     

     

     

     

     

     

    Determination of external abrasion on cast pipes

    Determination of external abrasion on cast pipes

    Determination of external abrasion on cast pipes

    • Resistance of external coatings
    • Suitability for trenchless installation methods
    • No applicable standards

     

     

     

     

     

     

    Shear strain of pressure-transmission elements under exposure to vertical and horizontal loads

    Shear strain of pressure-transmission elements under exposure to vertical and horizontal loads

    Shear strain of pressure-transmission elements under exposure to vertical and horizontal loads

    • Low-shear-resistance pressure-transmission elements increase the load acting on the pipe joint
    • Shear strains as a function of jacking loads
    • Fundamental research

     

     

     

     

     

    Measurement of temperature in buried sheathing pipes

    Measurement of temperature in buried sheathing pipes

    Measurement of temperature in buried sheathing pipes

    • Fluid-conducting line with radiant heat loss
    • Effects on sheathing pipe often neglected
    • Long-term investigations on buried sheathing pipes

     

     

     

     

     

    Tightness testing of buried fibre-optics splitters

    Tightness testing of buried fibre-optics splitters

    Tightness testing of buried fibre-optics splitters

    • Expansion of fibre-optics networks necessary
    • Installation of the “last mile” also in the pavement
    • Splitter water-tightness important!
    • Analysis of suitability of splitters for buried installation

     

     

     

     

     

    Contact

    IKT is a DIBt-accredited test centre for building products

    IKT is a DIBt-accredited test centre for building products

    • Dieter Homann
      Dipl.-Ing.

      Director Material Testing
      T: +49 (0) 209 17806-24
      E: homann@ikt.de
    • Martin Liebscher
      Dipl.-Ing.

      T: +49 (0) 209 17806-23
      E: liebscher@ikt.de

     

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    Contact:
    IKT - Institute for Underground Infrastructure
    neutral, independent, non-profit

    T: +49 (0) 209 17806-0
    E: info@ikt.de

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