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Aggregate Criterion for Paved Track Considering Recycling of Railway Ballast  

Lee, Il-Wha (한국철도기술연구원, 철도구조연구실)
Publication Information
Journal of the Korean Society for Railway / v.12, no.4, 2009 , pp. 481-487 More about this Journal
Abstract
On the paved track, the railway ballast is used as aggregate for the filling layer using the pre-packed concrete method. The condition of ballast as the paved track aggregate ensure that the compressive strength, particle distribution size for the pouring and surface clearance to increase the adhesive strength with mortar. It is profitable to recycle the existing railway ballast as a economical supply. In order to increase recycling characteristic, it is necessary to apply the similar criterion which does not exceed the conventional railway ballast criterion. Consequently, this paper was to investigate physical characteristics of existing ballast, particle size distribution, compressive and flexural strength, bearing capacity and filling capacity to prepare the aggregate's recycling. As a result, optimized aggregate criterion is suggested.
Keywords
paved track; ballast; aggregate; recycling;
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