Concrete Strength Acceptance Criteria IS:456-2000The minimum frequency of sampling of concrete of each grade shall be in accordance with the following: . of four non-overlapping consecutive test results, complies with the appropriate limits col. . Table 2 : Characteristic compressive strength compliance requirement . Foundation concrete is accepted as M25 grade.acceptable crushing strength limit for m20 grade concrete,acceptable crushing strength limit for m20 grade concrete,How can I interpret compressive strength of concrete at 28 days .4) But at the end fo the 28 days, compressive strength was under the limit. . This duration of 28 days has been adopted and accepted as a reasonable period at . are designed using a specified Grade of concrete based on 28 days strength.
acceptable crushing strength limit for m20 grade concrete