The behavior of concrete over thin film epoxy coatings on offshore pipelines
Problems have been experienced on lay-barges with the slippage of concrete weight coating when applied over TFE coatings. Tests were carried out on 42 inch concrete coated pipe samples, incorporating three different slip prevention methods, to determine the shear strength between the concrete and the pipe. Analyses were carried out to determine the resulting increase in the flexural stiffness of the pipe string developed by the concrete due to the varying shear strengths produced. It was found that the use of a rough band, consisting of flint chippings embedded in a layer of liquid epoxy on top of the TFE, was the optimum method. The advantages of this technique are that it is simple, cheap and only need be applied to a small area of the pipe so that the increase in stiffness can be controlled. The rough-band technique was used recently on an offshore pipeline project and found to be convenient and fully effective.
- Research Organization:
- British Gas Corp.
- OSTI ID:
- 5363279
- Report Number(s):
- CONF-830514-
- Journal Information:
- Offshore Technol. Conf.; (United States), Journal Name: Offshore Technol. Conf.; (United States) Vol. 1; ISSN OSTCB
- Country of Publication:
- United States
- Language:
- English
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