Laboratory Testing of Concrete Jacking Pipes

The first phase of the research involved a laboratory study of the behaviour of concrete pipes as used in pipejacking. Model pipes 200mm in diameter were used. This involved development of special microconcrete and reinforcement. Different joint types between pipes were studied. For some tests the pipes were deliberately mis-aligned to study this problem. It emerged from the tests that joint details and alignment were both of primary importance in pipejack design, and a lot of experimental data was accumulated to support good design.

The results of the tests are reported in the doctoral thesis by Kevin Ripley. The abstract gives some more details of his work.