Acoustic behavior of porous concrete. Characterization by experimental and inversion methods




Concrete, Aggregate, Mixture proportion, Characterization, Modelization


The use of porous concrete solutions with lightweight aggregates has become increasingly common in noise control due to their versatility in exterior and interior applications. In this work, samples of porous consolidated concrete with aggregates of expanded clay were produced, in order to study the influence of the grain size, thickness and water/aggregate/cement ratio on the sound absorption. Experimental techniques were used to obtain the surface impedance and sound absorption coefficient. In addition to experimental characterizations, an inverse method was used (based on a genetic algorithm) to obtain the macroscopic parameters capable of representing the materials studied through the theoretical model of Horoshenkov-Swift. Using the theoretical Horoshenkhov-Swift model it becomes possible to represent these materials in numerical models as equivalent fluids.


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How to Cite

Pereira, M., Carbajo, J., Godinho, L., Amado-Mendes, P., Mateus, D., & Ramis, J. (2019). Acoustic behavior of porous concrete. Characterization by experimental and inversion methods. Materiales De Construcción, 69(336), e202.



Research Articles