Effects of CO₂ Partial Pressure and Drying Conditions on Carbonation of Mortars

Abstract

This study investigated the influence of the drying condition of the mortar specimens and the CO₂ partial pressure during accelerated carbonation tests on the carbonation. The results show that when the change of the specimen’s mass due to drying was large and the CO₂ partial pressure was high, the carbonation progress increased. Following the accelerated carbonation test, hyperbaric-oxygen accelerated corrosion tests were conducted. As a result, the steel embedded in the mortar specimens was corroded when the carbonation depth was almost the same as the mortar cover.