Using high power ultrasonic waves to reduce water absorption in ordinary concrete

Today, concrete has a wide range of applications in various projects due to its desirable properties such as high compressive strength, fire resistance, high durability in corrosive environments and low permeability. Therefore, the use of effective methods for the principled compaction of concrete in order to improve the mechanical properties of concrete is of great importance. For this purpose, for the first time in this study, the use of high ultrasonic power waves with different powers, different times and 20 kHz frequency in concrete compaction and its effect on the water absorption rate of half an hour of concrete has been investigated. The results of this study show that the use of high ultrasonic power waves as a complementary process in the compaction of fresh concrete, leads to a reduction in the water absorption rate of half an hour of concrete about 12.5 to 15.5 percent, depending on the shape of the test mold.