Controlling the performance of sliplined pipe with grouting = L'impact de l'injection de coulis sur la performance lors de la réhabilitation d'une conduite par insertion conventionnelle
| Autor: | Zhao, J. Q., Daigle, L., Willmets, M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2003 |
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| Popis: | Annulus grouting, or non-grouting, is often the question in the minds of municipal engineers when considering trenchless sliplining technique for pipe rehabilitation. For ease of installation in sliplining rehabilitation, the outside diameter of the liner pipe is usually at least 10% smaller than the inside diameter of the host pipe, resulting in an annular space (or annulus) between the two pipes. Currently the decision on annulus grouting is mainly based on its impact on construction and cost. Based on a three-year study on the performance of a sliplined water main in the City of Ottawa, the effect of the grout on the performance of slipline pipe is presented in this paper. The pros and cons are explained in terms of buckling resistance, potential shear failure at lateral connections, protection of liner pipe when the host pipe fails, load-carrying capacity and control of load-sharing. Furthermore, how grouting can be used to maximise the desired performance of slipline pipe, or to strengthen an existing culvert is suggested in thepaper. This paper fits well with the theme of INFRA 2003 as it shares proven solutions to sliplining rehabilitation and promotes innovation in construction to maximize pipe performance. Infra 2003: the Changing Infrastructure Rehabilitation Market: the Emergence of a New Dynamic, 17 November 2003, Montréal |
| Databáze: | OpenAIRE |
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