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track ballast quality

Jan 08, 2016· Theballastmaterial should possess the generalqualitiesdescribed below. BasicqualityTheballastshould be hard, durable, as far as possible angular along edges/corners, and free from weathered portions of parent rock, organic impurities, and inorganic residues. Particle shapeBallastsshould be cubical in shape as far as possible.

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