IKT - Institute for Underground Infrastructure gGmbH

Online Seminar: The IKT LinerReport 2020

Posted 24. March 2021

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three point bending test on cipp liner sample

This year’s IKT LinerReport presents the results from the evaluation of installed CIPP gravity sewer liners based on the testing of 2,600 samples taken post-installation. Our free webinar marking the launch of the 17th annual review of the performance of CIPP sewer liners is presented by Roland Waniek and Barbara Grunewald, two of the authors, and an international perspective about the Liner Report will be provided by Dec Downey from…

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IKT LinerReport 2020: CIPP liners meeting target values at six-year low

Posted 15. March 2021

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For the 17th time, IKT presents its annual LinerReport. This LinerReport for 2020 considers the short-term test results from a total of 2,613 cured in place pipe (CIPP) liner samples. The overall test results for 2020 are the lowest in the past six years. One CIPP liner sample in eight did not achieve its expected target value for at least one test criterion.

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Why have we made a bigger hole in the floor of our laboratory?

Posted 16. December 2020

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blueprint drawing of large test facility für underground infrastructure

25 years ago, a hole was dug in the floor of our laboratory, this year we made it bigger – why, you may ask? Well, it’s because this Large (1:1 scale) Test Facility proved to be very adaptable for successfully comparing solutions to ageing sewer issues for sewer network owners. Extending it, as part of our current investment in improving existing facilities and construction of our new Heavy Rain Lab,…

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Pressure Sewers: UK, Irish an Dutch Sewer Network Owners Undertaking Partner Projects Alongside Current IKT Project

Posted 10. December 2020

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construction pit for installation of liner for pressure sewer

Around the world sewer network owners are struggling to address the options for replacement or rehabilitation of ageing pressure sewers. Often the preferred solution is to dig them up and replace them. Rehabilitation solutions using trenchless technology tend to be used only when it is too difficult to excavate, but sewer network owners are interested in using such technology more often. First, they need to fully understand it.

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Invitation to Webinar: Results of IKT-Compare Evaluation of Flowable Backfill

Posted 28. October 2020

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test rig for load plate compression test on flowable backfill

We would like to share the results of IKT’s comparative evaluation of flowable backfill for sewer pipes with you in a webinar on 12th November 2020. Also known as Controlled Low Strength Material (CLSM), flowable backfills were installed in realistic simulated pipe trenches and assessed for a range of performance attributes including: flowability, hardening, pipe support and ease of subsequent excavation.

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Liquid > Solid > Ready? Comparison of Five Flowable Backfills for Sewer Pipe Trenches

Posted 14. October 2020

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We have evaluated with sewer network owners the suitability of “Flowable Backfill” for use sewer trench backfilling in an IKT-Compare evaluation of this technology. Five products were compared and all were found to flow well into 1:1 scale excavation pits in our large-scale test facility – around pipes and manholes shafts and into every corner of the simulated trenches. However, during the subsequent performance tests it became increasingly clear that…

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IKT – Institute for Underground Infrastructure