New Diagnostic Imaging Technique, BCT, for the In-situ Assessment of Supporting Soil around Corrugated Metal Storm-water Pipe: System Wide Approach to Asset Management

摘要

Corrugated Metal Pipe (CMP) is heavily reliant on supporting soil for structural integrity. As such, a conditionrnassessment must include an evaluation of the supporting soil to be considered complete. Previously there was nornconclusive and quantifiable way to assess soil condition without damaging the pipe wall— further compromising thernstructural condition of the pipe. Backscatter Computed Tomography (BCT) has been applied to this unmetrninspection challenge and is capable of providing diagnostic imaging to enhance the understanding of structural soilrnconditions around CMP assets. BCT allows a full structural condition assessment and is the only non-destructivernmethod for imaging in-situ soil voids and undermining around CMP. As part of a comprehensive assessmentrnprotocol, this technology can be used in asset management programs, rehabilitation planning, safe replacement orrndeferral and post construction QA/QC.