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acceptable crushing strength limit for m20 grade concrete in equador

Concrete mixes are classified by its grade having specified crushing strength at 28 days as measured in standard conditions with 150 mm × 150 mm × 150 mm size cube that means the grade of concrete corresponds to its characteristic compressive strength M20 shows the crushing strength of that cube having size 150 mm at 28 days is 20 Nmm2...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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