Specimen number

Sand:Cement: gypsum

Polycarboxylic acid dosage

Water consumption

Compressive strength/MPa

A

5:2:9

Quality of cementitious material 1%

20%

3.10

B

6:4:6

Quality of cementitious material 1%

25%

6.08

C

3:4:4

Quality of cementitious material 1%

28%

9.02