Cost-effective crushing - The combination of a NW106 primary jaw crushing plant and a NW220GPD secondary ... customize as needed, making them more accessible to the rest of our global client .. also ballast for high-speed railways. Tae-hyung adopted a.stone crusher used to make ballast,section 20110 ballast and walkway aggregate - CaltrainSep 30, 2011 . Laboratory test results for all tests used in determining minimum property requirements of ballast. . Ballast/walkway aggregate shall be crushed stone broken by the crusher and have at least 2 broken .. Place the walkway aggregate only after subgrade and backfill have been completely compacted and.Research on Railroad Ballast Specification and Evaluationferred to as ballast) used for railway track support .. to produce broken stone, it is recommended that cob- . retained is then used as the source for crushing.
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