Concrete Application

Class of Concrete

Maximum W/CM

Minimum 28d Strength

Reference

Footings for walls, columns, fireplaces and chimneys

R-1

W/CM – 0.70

Min. 15 MPa
3-6% air

CSA-A438 (2000)
Concrete Construction for Housing & Small Buildings

Foundations, walls, grade beams, piers etc.

R-2

W/CM – 0.70

Min. 15 MPa
4-7% air

CSA-A438 (2000)
Concrete Construction for Housing & Small Buildings

Interior slabs on ground not exposed to freeze-thaw

R-3

W/CM – 0.65

Min. 25 MPa or,
Min. 20 MPa with vapour Barrier

CSA-A438 (2000)
Concrete Construction for Housing & Small Buildings

Garage floors* and all concrete exposed to freeze-thaw and deicing salts, such as walkways, driveways, patios, steps

C-2

W/CM – 0.45

Min. 32 MPa
5-8% air

CSA-A23.1 (2000)
Concrete Materials & Methods of Concrete Construction

Structural Design – not exposed to freeze-thaw

N

- - - - TO BE SPECIFIED - - - -

CSA-A23.1 (2000)
Concrete Materials & Methods of Concrete Construction

*structurally reinforced – exposed to chlorides w/wo freeze-thaw conditions

C-1

Min. 35 MPa
5-8% air

CSA-A23.1 (2000)
Concrete Materials & Methods of Concrete Construction

Unshrinkable Fill, Pump, Structural Mass, High Performance, SCC, Caissons, Tremie, Marine, Sulphate

-----------------------TO BE SPEICIFED -----------------------