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. 2021 Aug 7;14(16):4428. doi: 10.3390/ma14164428

Table 4.

Mixing procedure.

Procedure Mixing Time
50% of pebble aggregate + 50% of sand 1 min
50% of CEM I 42.5R 1 min
100% of water + 100% of superplasticizer 2 min
50% of pebble aggregate + 50% of sand + 50% of CEM 42.5R 1 min
100% of fibers 2 min 1 + * + 1 min + * + 1 min

1 Only for mixes with fibers. * Technical break to remove material on the walls and blades of the mixer.