Work Item
ASTM WK90594
New Test Methods for Standard testing methods for external loading of internal replacement pipe (IRP) technologies installed within existing pipelines.
1. Scope
IRPs are a trenchless rehabilitation method requiring limited excavation during installation and include all current trenchless pipe rehabilitation products and processes. The IRP technologies are intended for use in pipelines transporting a variety of materials including water, wastewater, and compressed gasses where maintaining internal pressure and resisting ground movement while accommodating host pipe defects (e.g., leaking joints, pinholes, and circumferential host pipe cracks) is required. The test methods are also meant to assess interactions between the IRP and outer host pipe; thus specimens consist of the combined pipe system.?
Keywords
pipeline rehabilitation
Rationale
Currently, no testing methodologies exist to characterize the interaction and performance of internal replacement pipe (IRP) technologies installed within existing pipelines in response to typical field loading scenarios such as live traffic loads and parallel adjacent excavations. Within this project a set of interconnected test methods will be developed which describe requirements and methods of testing for cyclical external loading, in both the lateral and axial directions, performed to evaluate the estimated service life of internal replacement pipe (IRP) technologies installed within existing pipelines for pipeline renewal purposes. Specific testing parameters (e.g., imposed displacements) are calculated based on IRP geometry and material properties based on existing research. The proposed test methods standard will also contain an appendix wherein previous research is linked to the details of the proposed testing parameters for various IRP’s and host pipe combinations.
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 05-02-2024
Technical Contact: Steven Ferry