IKT – Institute for Underground Infrastructure

CIPP liners: Site samples

IKT is accredited with the DAkkS National Accreditation Body for tests on CIPP liners and plastics

A representative sample of an installed liner needs to be taken on-site before testing in the IKT laboratory. Samples of CIPP liners which are cured by UV light (“UV-curing liners”) should be packed in light-tight film or foil before being taken out of the manhole.

Site sample of CIPP liner: 200 mm x 350 mm

CIPP liners larger than DN 200

The necessary dimensions of such liner samples are:

Total wall thickness up to 10 mm:
Sample must measure not less than 200 mm x 350 mm
Total wall thickness greater than 10 mm:

Circumferential direction: 20 x total wall thickness
Longitudinal direction: 350 mm

CIPP liners up to DN 200 and sewer lateral liners

Sewer lateral liner site sample

A complete circular ring should be taken for the vertical-compression test if on-site circumstances permit this.

Necessary sample length:
Pipe diameter + 50 mm

Examples:

Pipe DN 150: Sample length = 200 mm
Pipe DN 200: Sample length = 250 mm

DSC analysis

Sample for DSC analysis: 20 mm diameter necessary

A round liner sample of approx. 20 mm diameter is sufficient as a sample for DSC analysis performed on epoxy resins.

Sample data sheet

Sample data sheet
Materials testing of CIPP liners

Please enclose this form when you send us your samples. This ensures that your sample can be correctly identified.
Please complete a sample data sheet for each individual site sample you send us.

Sample data sheet for CIPP liners

Request for quotation CIPP liners

Request for quotation
Materials testing of CIPP liners

Do you require standard or expanded-scope tests?
We will provide a quotation tailored to your needs, to ensure that your QA requirements are met.

Request for quotation CIPP liners

CIPP liner test standards

The minimum scope of testing for CIPP liners consists of the three-point bending test for determination of modulus of elasticity and bending stress, and the water tightness test.

Further tests are available, as defined in the ZTV Materials Testing (CIPP liner test standards), which make it possible to determine the quality of CIPP liners even more precisely.

CIPP liner test standards