Figure 1
Examples of pipe damage: a), b) cracks and structure defects, c) damaged connectors.
Figure 2
Technical conditions according to ATV 143-2; a) technical condition I; b) technical condition II; c) technical condition III; d) technical condition III a [5].
Figure 3
An overview sketch of the liner's installation.
Figure 4
Illustration of the GWT method for measuring water permeability [30].
Figure 5
Three-point bending – test scheme.
Figure 6
Accuracy requirements for the determination of the flexural modulus [18].
Figure 7
Laboratory test of a liner – diameter 200 mm.
Figure 8
Ring stiffness for 200 mm diameter samples.
Figure 9
Laboratory test of a liner – diameter 350 mm.
Figure 10
Ring stiffness for 350 mm diameter samples.
Figure 11
Laboratory test of a liner – diameter 500 mm.
Figure 12
Ring stiffness for 500 mm diameter samples.
Figure 13
The mechanism of the sample's destruction.
Figure 14
Example of a damaged sample.
Figure 15
Sample test using the GWT device.
Figure 16
Real and computational ring stiffness for different diameters