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TB/T 2140.2-2018 English PDF (TBT2140.2-2018)

TB/T 2140.2-2018 English PDF (TBT2140.2-2018)

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TB/T 2140.2-2018: Railway ballast - Part 2: Test methods
This Standard specifies test methods and calculations for Los Angeles abrasion ratio, standard collect stuff concussion temper, stones wear resistant rigidity coefficient, standard collect stuff crunch rate, ballast collect stuff crunch rate, filter coefficient, rock powder test model compressive strength, rock powder fluid limit, rock powder mold limit, combination of rock powder fluid limit and mold limit, vitriol natrium liquor marinate loss lead, stones density, stones specific gravity, ballast grading, acicular index and laminated index, air-slake grain and other incidental stones, the dust content of the grain below 0.1mm, surface cleanness of railway ballast.

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