Journals Proceedings

Abstract

A frost resistance is required for the concrete and reinforced concrete elements such as girder bridges, dams, concrete paving and airport runways in cold climatic zones. The water in the capillary spaces of concrete is freezes and expands when subjected to frost effect water-saturated hardened concrete. The expansion amount at the end of re-freezing subsequent dissolving increases cumulatively. If the stress caused by expansion exceeds the tensile strength of concrete, distortion such as cracking, disintegration are occurred in concrete. In this study; the freeze-thaw effects on bond strength of reactive powder concrete (RPC), normal concrete and mortar were studied. The effect of maximum aggregate diameter, chemical additives, water/binder ratio, steel fiber and curing conditions on bond strength were determined. The fiber-matrix bond strength and mechanical properties of control samples compared with specific freeze-thaw cycle exposed samples.