11. Standards 11.1.3 Classification by Consistence The classes of consistence in the tables below are not directly related. For moist concrete, i.e. concrete with low water content, the consistency is not classified. Table 11.1.3.2: Flow classes
Compaction classes
Flow classes
Class
Class
Degree of compactability
Flow diameter in mm
C0¹
≥ 1.46
F1¹
≤ 340
C1
1.45 to 1.26
F2
350 to 410
C2
1.25 to 1.11
F3
420 to 480
1.10 to 1.04
F4
490 to 550
< 1.04
F5
560 to 620
F6¹
≥ 630
C3 C4 a
a
C4 applies only to light weight concrete
Table 11.1.3.3: Slump classes
Table 11.1.3.4: Vebe classes
Slump classes
Vebe classes
Class
Class
Slump in mm
Vebe time in seconds
S1
10 to 40
V0¹
≥ 31
S2
50 to 90
V0¹
30 to 21
S3
100 to 150
V2
20 to 11
S4
160 to 210
V3
10 to 6
S5¹
≥ 220
V4²
up to 3
¹ Not in the recommended area of application ² Not in the recommended area of application (but common for self-compacting concrete)
Standards
Table 11.1.3.1: Compaction classes
229