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Table 2 Mix proportion

From: Pipe flow of pumping wet shotcrete based on lubrication layer

Materials Design strength (C25–C35)
Name of the series Group 1 Group 2 Group 3
Cement (kg/m3) 401 430 410
Fly ash class F (kg/m3) 43 48 44
Water (kg/m3) 204 192 186
Sand (kg/m3) 876 889 887
Coase aggregate (kg/m3) 704 680 711
Lignosulfonate-based WRA (%) 0.3 0.25 0.25
Slump (mm) 110 ± 20 110 ± 20 100 ± 20