Yasunori Matsufuji

The influence of medium temperature environments on the water permeability of high performance mortar

In this study, the durability of normal portland cement mortar and silica fume mortar are characterized by measuring the water permeability under four different types of curing temperatures. It is observed that the water permeability of normal portland cement mortar increases as temperature increases up to 75°C. However, the water permeability of silica fume mortar decreases as the temperature increases. This indicates that the high pozzolanic reaction and microfiller effect of silica fume at medium temperature has modified the open channels at the transition zone of silica fume mortar, making it much denser and stronger and leading to a fine and discontinuous pore structure.