Browse > Article
http://dx.doi.org/10.5050/KSNVE.2014.24.7.562

Changes in Physical Properties of Fibrous Sound Absorption Materials According to the Manufacturing Time  

Jeong, Young-Sun (Korea Institute of Civil Engineering and Building Technology)
Kim, Kyoung-Woo (Korea Institute of Civil Engineering and Building Technology)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.7, 2014 , pp. 562-568 More about this Journal
Abstract
This study aimed to identify changes in the physical properties of artificial mineral-fiber materials used as building insulation that had been installed in the outer walls of buildings for a long time. To achieve this goal, glass fiber and rock wool were collected from outer walls in actual buildings and their acoustic and thermal performances were measured. These were compared with measurements from similar products manufactured recently. The results showed that old, used samples had a lower sound absorption coefficient compared to recently manufactured materials. The old samples also displayed increased compressibility compared to new materials. For example, the compressibility difference for glass wool was 7.32 mm. Old samples had a dynamic stiffness $1.28MN/m^3$ higher than new material samples. The thermal conductivity of both old and new samples increased within creasing temperature. They showed similar results at temperatures between 0 and $20^{\circ}C$.
Keywords
Fibrous Sound Absorbing Material; Sound Absorption Coefficient; Dynamic Stiffness; Compressibility; Thermal Conductivity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Schiavi, A., Pavoni Belli, A., Corallo, M. and Russo, F., 2007, Acoustical Performance Characterization of Resilient Materials Used Under Floating Floors in Dwellings, Acta Acustica United with Acustica, Vol. 93, pp. 477-485.
2 Lee, J. W., Lee, S. N., Shim, J, H., Jung, P, K., Lee, W. K. and Bang. B. J., 2011, The Study on Improvement of Acoustic Performance or Automobile Sound-absorbing Materials Using Hollow Fiber, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21 No. 9, pp. 850-857.   과학기술학회마을   DOI
3 Yeon, J. O., Kim, K. W. and Yang, K. S., 2013, Evaluations of the Acoustics Characteristics of Cellulose Absorbers, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 23 No. 5, pp. 456-462.   과학기술학회마을   DOI
4 Schiavi, A., Pavoni, B. A. and Francesco R., 2005, Estimation of Acoustical Performance of Floating Floors from Dynamic Stiffness of Resilient Layers, Building Acoustics, Vol. 12, No. 2, pp. 99-113.   DOI
5 McMullan, R., 2007, Environmental Science in Building, Sixth Edition, PALGRAVE MACMILLAN, NewYork, United Kingdom, p. 14.
6 Bettarello, F., Caniato, M., Monte, R. D., Kaspar, J. and Sbaizero, O., 2010, Preliminary Acoustic Tests on Resilient Materials: Comparison between Common Layers and Nano-structure Layers, Proceedings of 20th International Congress on Acoustics.
7 Cremer, L., Heckel, M. and Ungar, E. E., 1998, Structure-borne Sound, 2nd Ed. Sprinter-Verlag, Berlin.
8 Dikavicius, V., Miskinis, K. and Stankevicius, V., 2010, Inflience of Mechanical Deformation on Compressive Strength of Open and Closed Cells Resilient Materials, Materials Science(Medziagotyra), Vol. 16, No. 3 pp. 268-271.
9 Al-Homoud, M. S., 2005, Performance Characteristics and Practical Applications of Common Building Thermal Insulation Materials, Building and Environment, Vol. 40, No. 3, pp. 353-366.   DOI   ScienceOn
10 Korean Agency for Technology and Standards (KATS), 2011, Korean Standard (KS) L 9102:2011 Artifical Mineral Fiber Thermal Insulation Materials.
11 Moon, H. J., Ryu, S. H. and Kim, S. K., 2012, Measurement and Application of Hygrothermal Properties of Building Materials for Moisture and Biological Contaminations Control in Built Environment, Journal of the Architectural Institute of Korea, Vol. 28 No. 3, pp. 227-234.   과학기술학회마을
12 Kim, K. W., Jeong, G. C., Yang, K. S. and Sohn, J. Y., 2009, Correlation between Dynamic Stiffness of Resilient Materials and Heavyweight Impact Sound Reduction Level, Building and Environment, Vol. 44, No. 8, pp. 1589-1600.   DOI