JOURNAL BROWSE
Search
Advanced SearchSearch Tips
An optimal mix design of sound absorbing block on concrete ballast in urban train tunnel
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
An optimal mix design of sound absorbing block on concrete ballast in urban train tunnel
Lee, Hong-Joo; Oh, Soon-Taek; Lee, Dong-Jun;
  PDF(new window)
 Abstract
As spreading of train concrete ballast leads to the increase resounding friction noise, an porous sound absorbing block is applied in urban train tunnel as a counterparts against the friction noise. Three steps of major variables tests for an optimal mix design of the block are conducted to pursue the light weight of the block. Pilot property tests of the block for the cases of the fly-ash only as lightweight aggregates are carried satisfying KRT(Korean Rail Transit) and new KRS(Korean Railway Standards). Based on the results of pilot tests, required structural strength and admixture effects are evaluated. Additionally, typical lightweight aggregates are replaced so that lightweight and strength are improved for serviceability of poor working conditions and proper maintenance in urban train tunnel.
 Keywords
Light sound absorbing block;Concrete ballast;Lightweight aggregate;Optimal mix design;Urban train tunnel;
 Language
Korean
 Cited by
 References
1.
Choi, I.Y. (2009), "Noise absorptive concrete panel for railway slab", Korea Intellectual Property Information Service, KIPRIS 10-0910171.

2.
Choi, P.G., Park, W.I., Yun, K.K., Lee, B.H. (2010), "Air-void structure of very-early strength latex-modified concrete using ultr-fine fly ash", Journal of Korean Society of Hazard Mitigation, Vol. 10, No. 2, pp. 47-53.

3.
Kang, S.P. (2012), "A study on the effect of highcalcium fly ash on the compressive strength of the portland blast-furnace slag cement concrete", Journal of the Construction and Environment Research Institute, Vol. 7, No. 1, pp. 23-30.

4.
Kang, D.M., Seo, J.W., Lee, I.Y., Park, Y.G. (2008), "A study on the sound absorption properties of sound absorption block using by artificial light weight aggregate", Conference of The Korean Society for Railway, The Korean Society for Railway, pp. 803-839.

5.
KRRI, Seoul Metro, KRTC, GETPC (2013), "Ballast sound absorbing block of urban railway", Korea Intellectual Property Information Service, KIPRIS 10-1276083, 2013.

6.
KRS (2015), "Noise absorption materials on track bed", Korean Railway Strandard, KRS TR 0016-15.

7.
Yoo, S.B., Lee, A.H., Kim, S.J., Kang, K.D. (2011), "A study on the sound absorption effect of concrete track the sound absorption blocks in urban transit", Conference of Korean Society of Railway, pp. 329-336.