CIPP

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Tender Texts for CIPP Tests

Quality assurance as part of site supervision CIPP (main drive)

Standard tests

Testing of short-time bending stress, determination of short-time e modulus and wall thickness in 3-point bending test according to DIN EN ISO 178 (in conjunction with DIN EN ISO 11296-4) 5 individual tests per specimen,  according to section 7.2.2 of DWA-A 143-3

Testing the water tightness of the laminate Based on DIN EN 1610 at 0.5 bar negative pressure, test time 30 min according to section 7.2.9 of DWA-A 143-3

Additional tests

Determination of the glass/resin ratio by calcination method (determination of ash residue) according to DIN EN ISO 1172 according to section 7.2.8 of DWA-A 143-3

Determination of the 24h e modulus, determination of the creep tendency according to DIN EN ISO 899-2 in connection with short-term value (DIN EN ISO 178 / DIN EN ISO 11296-4) according to section 7.2.4 of DWA-A 143-3

Testing of residual styrene content in laminate samples for pipes in water protection areas according to DIN 53394-2 according to section 7.2.5 of DWA-A 143-3

Checking the conformity of the reaction resins used by FT-IR spectral analysis according to ASTM D5576 according to section 7.2.7 of DWA-A 143-3

Determination of the ring stiffness and the circumferential e modulus in the short-time crushing test according to DIN EN 1228 / ISO 7685

 

Quality assurance as part of site supervision CIPP (lateral drive)

Check of the curing of the laminate (for EP resins): DSC analysis (DDK measurement) according to DIN EN ISO 11357-2 including visual assessment of the laminate and determination of the wall thickness according to annex F of DWA-A 143-3

Check of the curing of the laminate (for UP resins): Determination of the residual styrene content according to DIN 53394-2 (GC) including visual assessment of the laminate and determination of the wall thickness

Determination of the e modulus on small samples: DMA analysis (dynamic mechanical analysis) according to ISO 6721, part 4, according to annex F of DWA-A 143-3

Site sample (main drive)

> DN 200: Radial length: dependent of wall thickness (20 times), Axial length: min. 350 mm

< DN 200: as round pipe section

Site-Sample (lateral drive)

Cored hole 3-5 cm (for DDK and DMA test)