Abstract
In oil and gas industry, fibre-reinforced polymer (FRP) composite are widely used to repair pipeline subjected to external metal loss. This repair technique can be done by incorporating epoxy grout as infill material to smoothen the defect on pipeline surface and later wrapped with a composite wrap to restore the strength of the pipe. This paper attempts to investigate the behaviour of an epoxy grout with 0.5wt% graphene nanoplatelets (GnPs) under tensile loading according to the ASTM D638. GnPs were dispersed through the sonication method followed by calendering process to ensure an optimum enhancement in the properties of polymer matrix can be achieved. The results show positive improvement in terms of strength and Young's modulus of tested grout with the inclusion of GnPs. It shows that the presence of low concentration of GnPs as an additive has a significant reinforcement effect by improving tensile properties of epoxy grout up to 14% as compared to control sample.
Highlights
Steel pipelines are the most convenient and important tools in transferring oil and gas for onshore and offshore
The future trend will likely focus on optimizing the design of composite repair system and there are intense efforts in reducing or eliminating the use of composite wrap in the pipeline repair system for cost reduction sake. This aforementioned goal can be achieved by strengthening the infill material of composite repair system used to smoothen the metal loss surface since the grout performance can give a great impact on the effectiveness of the pipeline repair system [4], [8]
This study investigated the influence of graphene nanoplatelets (GnPs) on the tensile properties of epoxy grout
Summary
Steel pipelines are the most convenient and important tools in transferring oil and gas for onshore and offshore. This practices must be accompanied with epoxy grout which is used to flatten the damaged surface of steel pipe. The future trend will likely focus on optimizing the design of composite repair system and there are intense efforts in reducing or eliminating the use of composite wrap in the pipeline repair system for cost reduction sake This aforementioned goal can be achieved by strengthening the infill material of composite repair system used to smoothen the metal loss surface (pit) since the grout performance can give a great impact on the effectiveness of the pipeline repair system [4], [8]. This paper will study the potential of graphene nanomaterial in improving the tensile properties of infill material to be used in pipeline composite repair system
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