PORTLAND LIMESTONE CEMENT-BASED MORTAR FOR POST-INSTALLED REBARS IN HARDENED CONCRETE

Abstract

This paper presents a study of performance evaluation of fluid cement-based mortars containing limestone used as structural bonding material for fixing reinforcing steel bars in hardened concrete. A series of standardized tests were performed during the experimental setup with the objective of assessing the performance of the mortars in terms of fluidity, cohesiveness and early age strength. This experimental work also investigates the strength at 7 and 28 days of the fluid mortars used as bonding material. The bond strength of the rebars at 7 days is assessed. The study results were positive showing that it is feasible to anchor resistance steel rebars in concrete of low and medium strength with this mortar.