We already do the grouting based on the procedure. From the J-cone test, the mixture is flowable enough and appropriate with the design.
If the mixture is really not appropriate with the design, there won’t be sample with >req result.
Generally, not all compressive strength test samples come out with a good result. The result with red mark must be effected by shape (sample’s surface) or sample’s position when compressive strength test.
From the Japan standard, compressive strength for 28 days is 40 N/mm2 (410 kg/cm2). So, the result of compressive strength test for BH 182 Bearing Pad Shoe Non Shrink Grout Cube Samples with black mark is all passed.