| 摘要 |
Method of weighting of a plastic pipe with a hollow, air-filled wall, a weighted lightweight pipe with a hollow wall, and a pipeline formed by a plurality of weighted, lightweight pipes which are welded together. According to the method the hollow wall of the pipe is filled with a flowing medium which displaces air and which increases the weight of the pipe and which thereby facilitates submerging of the pipe. The flowing medium is suitably a concrete mix which has delayed hardening and low long-term strength. The concrete mix gives reliable weighting of the pipe without external point loadings. The binder of the mix prevents segregation of the aggregate and the material thereby becomes evenly distributed inside the wall of the pipe. |
