NUMERICAL SIMULATION OF THE TRANSMISSION OF SOUND WAVES ON HOLLOW CONCRETE BLOCKS AND THEIR BEHAVIOR AS ACOUSTIC INHIBITOR.

This research work allows us to determine the behavior of concrete as an acoustic inhibitor, for this we start from a deep bibliographical search related to the propagation of sound and its properties, focused on hollow blocks whose material is concrete. The experimental tests are based on the NTE INEN standard where the transmission losses in the sound propagation are analyzed together with the properties of said material, under the same standard the tests are carried out in the experimental part and the necessary calculations of the different parameters, data that will later be used in the simulations. To carry out the simulations, the COMSOL Multiphysics software is used, with the poracoustic domain function that uses the Johnson-Champoux-Allard mathematical model, which allows characterizing the acoustic properties of the analyzed concrete in terms of the angle of incidence of the wave from 0° to 45° and frequency. For the validation of the model, the values of the simulated acoustic absorption coefficient and the impedance of the surface are considered with the analytical results. Finally, with this study, the acoustic behavior of concrete in the form of hollow blocks is identified and the values of the acoustic absorption coefficient are obtained through simulations and experimental design.