Options of Assessment of Absorption Capacity of Noise Barrier

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Abstract:

The contribution deals with the possibilities of measuring the sound absorption coefficient of concrete panels. On the example of the modified concrete shows one of the possible methods that could be used to check for changes in the case of acoustic properties of restoration of the damaged panels. The issue of evaluation of the sound absorption coefficient is quite complex and difficult in the interpretation of the results, primarily due to the impact of the size of the tested element and parasitic interference in the surrounding environment.

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125-129

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April 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] ASTM Standard C384-04, 2003, Standard Test Method for Impedance and Absorption of Acoustical Materials by the Impedance Tube Method, ASTM International, 2003, DOI : 10. 1520/C0384-04R11.

Google Scholar

[2] ASTM Standard E1050, 2012, Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones, and a Digital Frequency Analysis System, ASTM International, York, PA USA, 2012, DOI: 10. 1520/E1050-12.

DOI: 10.1520/e1050-19

Google Scholar

[3] ISO 10534, Determination of sound absorption coefficient and impedance in impedance tubes, International Organisation for Standardization, Case postale 56, CH-1211 Genève 20, (1998).

Google Scholar

[4] ASTM Standard C423, 2009a, Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method, ASTM International, York, PA USA, 2009, DOI: 10. 1520/C0423-09A.

DOI: 10.1520/c0423-06

Google Scholar

[5] ISO 13472-1, Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 1: Extended surface method, 2002, CS: 17. 140. 30; 93. 080. 20, TC/SC: ISO/TC 43/SC 1.

DOI: 10.3403/02606511u

Google Scholar

[6] Holub, J.: Report on measurement of acoustic parameters of concrete boards with rubber admixture, Doc. Ing. Jan Holub, Ph.D., K13138 measuring, FEL CTU in Prague, January (2013).

Google Scholar