Abstract
It is well recognized that damage resulting from freeze-thaw cycles is a serious problem causing deterioration and degradation of concrete[1–2]. In general, freeze-thaw cycles change the microstructure of the concrete ultimately leading to internal stresses and cracking. Freeze-thaw damage progress at earlier stage is initiated on surface and near surface of concrete mainly due to the onset of ice forming in capillary pores which expands n volume of concrete[3]. Therefore utilizing stress waves propagating along near surface of concrete is expected to be effective to monitor the damage progress caused by repeated cycles of freeze-thaw in concrete.
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