Laboratory analyses and numerical simulation for sound absorption of plasters in historical buildings

Tarik Serhat Bozkurt*, Sevtap Yilmaz Demirkale

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9 Atıf (Scopus)

Özet

During the restoration of historical buildings, it is very important for the maintenance of the authenticity of the building that decisions related to the selection of materials and the plaster mortar mixtures, determined through plaster analyses, are in accordance with those of the historical structure. In restoration of the historical buildings, there are also some important parameters related with interior room acoustics such as propagating sound properly, ensuring speech intelligibility, preventing from undesirable interior noise and maintaining of auditory comfort conditions. The present study investigates how the sound-absorption coefficient of existing plaster layers can be increased and describes the means of ensuring the newly applied plaster layers are in accordance with the historical structure. Within the study, three different plaster mixtures containing three different type of binder, with plaster layers of 3 cm, 6 cm, 9 cm and 12 cm thickness were produced with each mixture type. The sound-absorption coefficient tests were carried out according to mixtures type and plaster layer thickness. The sound absorption coefficients were modeled using MATLAB software for different plaster thicknesses based on the results obtained from the sound-absorption coefficient measurements. In following stage, to show the effect of the measurement results of the sound-absorption coefficient within the place, a historical place was selected and reverberation time analyses were carried out in the direction of the measurement results. In this research, it is demonstrated that the sound absorption can be increased by means of increasing plaster layer thickness and changing mortar mixture types. It is concluded that the sound absorption research for historical buildings systematically carried out in order to show the role of importance sound absorption material selection in accordance with historical plaster analysis in restoration process.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)103-117
Sayfa sayısı15
DergiJournal of Cultural Heritage
Hacim36
DOI'lar
Yayın durumuYayınlandı - 1 Mar 2019

Bibliyografik not

Publisher Copyright:
© 2018 Elsevier Masson SAS

Finansman

The authors wish to thank the Turkish Standards Institute for sound absorption coefficient measurements and also wish to thank the Centre for Materials Research at the İzmir Institute of Technology for XRF and XRD patterns analyses.

FinansörlerFinansör numarası
Centre for Materials Research
Turkish Standards Institute

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