Proposal of a methodology for assessing the reliability of in situ concrete tests and improving the estimate of the compressive strength

► The use of coring for estimating the in situ strength of concrete is discussed. ► Proposal for a methodology aimed at the definition of the parameter called “CDD”. ► CDD evaluates the degradation of material and the damage of the drilled core. ► Validation of Rc,situ based on the compaction degree (gc) of the concrete. ► Two case studies have been considered: an existing and a new RC building.