FEEDBACK EXPERIENCE FROM A 30 YEARS OLD CONCRETE USING CEMENT WITH A HIGH CONTENT OF BLAST FURNACE SLAG

Abstract

In this study, we analyze the aspect of a slag cement concrete
used in the seventies for the construction of the walls of a
structure located close to the channel sea. From different
characterization tests (chemical, physical, and micro
structural), it can be conclude that the concrete is not showing
any pathology and any important attack, due to the marine
environment. After being exposed during 30 years, the
chlorides ions have not reach the steel metal bar reinforcement
and the carbonation depth is still low. This study details the
results of chloride diffusion coefficient and carbonation depth
measurements, sulfates and chloride quantification, XRD
analysis, and SEM examination.