[28 day Max.
Usual
Str.
Slump
Class
Traffic
Typical Uses
MPa
mm
residences
3
Light foot &
Drives, garage floors,
25
100
pneumatic wheels
and sidewalks for
residence
4
Foot and
Light industrial,
30
75
pneumatic wheels
commercial
5
Foot & wheels
Single-course industrial,
35
75
abrasive wear
integral topping
6
Foot & steel-tire
Two-course heavy
See ACI 301
vehicles - severe
industrial topping
abrasion]
[28 day Max.
Usual
Str.
Slump
Class
Traffic
Typical Uses
psi
in.
1
Light foot
Residential or tile
3000
4
covered
2
Foot
Offices, churches,
3500
4
schools, hospitals,
residences
3
Light foot &
Drives, garage floors,
3500
4
pneumatic wheels
and sidewalks for
residence
4
Foot and
Light industrial,
4000
3
pneumatic wheels
commercial
5
Foot & wheels
Single-course industrial,
4500
3
abrasive wear
integral topping
6
Foot & steel-tire
Two-course heavy
See ACI 301
vehicles - severe
industrial topping
abrasion]
GUIDELINES FOR CONCRETE NOT EXPOSED TO SEVERE CONDITIONS FOR
MAXIMUM WATER-CEMENT RATIO:
Compressive Strength
Without AE
With AE
3000 PSI (20 MPa)
0.58
0.50
3500 PSI (25 MPa)
0.54
0.48
4000 PSI (30 MPa)
0.50
0.45
AE= air-entrainment
REQUIREMENTS FOR SPECIAL EXPOSURE CONDITIONS (From ACI 318M/318RM):
SECTION 03300N
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