Effect of Carbonation on Fracture Property of Mortar

Abstract

An accelerated carbonation test and a fracture test were carried out to investigate the change in fracture properties of mortar due to the carbonation. Fracture parameters such as a notch tensile strength and a fracture energy of the carbonated specimens with different water-cement ratios were measured under the different curing conditions. A compressive strength test and a flexural strength test were also conducted for the mortars. The results were compared with the test results of the air curing specimens of the same material age. As a result, the compressive strength of the mortars showed a tendency to increase due to the carbonation. The fracture energy of the carbonated mortars was equal to or higher than that of the air curing specimens. In addition, it was confirmed that the changes in the flexural strength and the notch tensile strength of the carbonated mortars indicated a different tendency by the difference in the water-cement ratio.