What is PD CEN/TR 17086 about?
PD CEN/TR 17086 explains the reasoning behind the requirements and procedures mentioned under EN 13791 . PD CEN/TR 17086 provides the reasoning behind why some concepts and procedures mentioned under EN 13791 were not adopted in its 2019 revised version.
BS EN 13791 covers two in-situ strength assessments. These include:
To estimate in situ characteristic compressive strength of a test region and/or in situ strength at specific locations
Assessment of compressive strength class of concrete supplied to a structure under construction where there is doubt about the compressive strength based on results of standard tests or doubt about the quality of execution
...