도시철도 터널내 콘크리트 도상용 흡음블럭의 최적 배합설계 = An optimal mix design of sound absorbing block on concrete ballast in urban train tunnel

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

1 최판길, "울트라 파인 플라이 애시를 사용한 초속경 LMC의 공극구조 특성" 한국방재학회 10 (10): 47-53, 2010

2 강석표, "고로슬래그 시멘트 콘크리트의 압축강도에 미치는 고칼슘 플라이애시의 영향에 관한 연구" 건설환경연구소 7 (7): 23-30, 2012

3 Choi, I. Y., "Noise absorptive concrete panel for railway slab" Korea Intellectual Property Information Service 2009

4 KRS, "Noise absorption materials on track bed" Korean Railway Strandard 2015

5 KRRI, "Ballast sound absorbing block of urban railway" Korea Intellectual Property Information Service 2013

6 Kang, D. M., "A study on the sound absorption properties of sound absorption block using by artificial light weight aggregate" The Korean Society for Railway 803-839, 2008

7 Yoo, S. B., "A study on the sound absorption effect of concrete track the sound absorption blocks in urban transit" 329-336, 2011