Concrete C16-C20-C25, for exposed reinforced concrete structures

Concrete			Cement (t)		Aggregate (m³)	Water (m³)	Plasticizer (kg)	Retarder (kg)
Strength	D_max	Consistency	250 bspc 60	350 bspc 60	Aggregate (m³)	Water (m³)	Plasticizer (kg)	Retarder (kg)
C16	16	K^x	0.354	-	1.147	0.19	1.8	-
	16	KK^xx	0.323	-	1.146	0.18	-	4.8
	24	KK^xx	0.313	-	1.135	0.17	-	4.7
	32	KK^xx	0.303	-	1.124	0.16	-	4.5
C20	16	KK^x	0.333	-	1.208	0.16	1.7	-
	16	KK^xx	0.374	-	1.105	0.19	-	5.6
	24	K^x	0.394	-	1.078	0.2	2.0	-
	24	KK^xx	0.359	-	1.097	0.18	-	5.3
	32	K^x	0.384	-	1.069	0.19	1.9	-
	32	KK^xx	0.343	-	1.09	0.17	-	5.2
C25	16	KK^x	0.374	-	1.178	0.165	1.9	-
	16	KK^xx	0.424	-	1.163	0.2	-	6.4
	24	K^x	0.48	-	1.018	0.21	2.4	-
	24	KK^xx	0.409	-	1.056	0.19	-	6.1
	32	K^x	0.455	-	1.026	0.195	1.8	-
	32	KK^xx	0.394	-	1.05	0.18	-	5.9

^x for solid plain surface
^xx for grained (antislip) surface
Plasticizer agent e.g.: Plastol BF
Retarding admixture e.g.: Keterdol F