Green Stone ™ concrete is the provider of concrete mixtures for all applications and standard exposure classes according to client's requirements or applicable specifications.

 

MOT Concrete mixes 

Concrete mixes specifically designed according to the standard specifications of the Ministry of Transportation with different applications and exposure classes.

 

CSA A23.1 Standard Mixes:

 

C-1

 Structurally reinforced concrete exposed to chlorides with or without freezing and thawing conditions.

Examples: bridge decks, parking decks and ramps, portions of structures exposed to seawater located within the tidal and splash zones, concrete exposed to seawater spray, and salt water pools. For seawater or seawater-spray exposures the requirements for S-3 exposure also have to be met.

C-2 

Non-structurally reinforced (i.e., plain) concrete exposed to chlorides and freezing and thawing.

Examples: garage floors, porches, steps, pavements, sidewalks, curbs, and gutters.

C-3 

Continuously submerged concrete exposed to chlorides, but not to freezing and thawing.

Examples: underwater portions of structures exposed to seawater. For seawater or seawater-spray exposures the requirements for S-3 exposure also have to be met.

C-4 

Non-structurally reinforced concrete exposed to chlorides, but not to freezing and thawing.

Examples: underground parking slabs on grade.

C-XL

Structurally reinforced concrete exposed to chlorides or other severe environments with or without freezing and thawing conditions, with higher durability performance expectations than the C-1 classes.

 

F-1 

Concrete exposed to freezing and thawing in a saturated condition, but not to chlorides.

Examples: pool decks, patios, tennis courts, freshwater pools, and freshwater control structures.

F-2 

Concrete in an unsaturated condition exposed to freezing and thawing, but not to chlorides.

Examples: exterior walls and columns.

Concrete that when in service is neither exposed to chlorides nor to freezing and thawing nor to sulphates, either in a wet or dry environment.

Examples: footings and interior slabs, walls, and columns.

N-CF 

Interior concrete floors with a steel-trowel finish that are not exposed to chlorides, nor  to sulphates either in a wet or dry environment.

Examples: interior floors, surface covered applications (carpet, vinyl tile) and surface exposed applications (with or without floor hardener), ice-hockey rinks, freezer warehouse floors.

A-XL 

Structurally reinforced concrete exposed to severe manure and/or silage gases, with or without freeze-thaw exposure. Concrete exposed to the vapour above municipal sewage or industrial effluent, where hydrogen sulphide gas might be generated, with higher durability performance expectations than A-1 class.

 

A-1 

Structurally reinforced concrete exposed to severe manure and/or silage gases, with or without freeze-thaw exposure. Concrete exposed to the vapour above municipal sewage or industrial effluent, where hydrogen sulphide gas might be generated.

Examples: reinforced beams, slabs, and columns over manure pits and silos, canals, and pig slats; and access holes, enclosed chambers, and pipes that are partially filled with effluents.

A-2 

Structurally reinforced concrete exposed to moderate to severe manure and/or silage gases and liquids, with or without freeze-thaw exposure.

Examples: reinforced walls in exterior manure tanks, silos and feed bunkers, and exterior slabs.

A-3 

Structurally reinforced concrete exposed to moderate to severe manure and/or silage gases and liquids, with or without freeze-thaw exposure in a continuously submerged condition. Concrete continuously submerged in municipal or industrial effluents.

Examples: interior gutter walls, beams, slabs, and columns; sewage pipes that are continuously full (e.g., forcemains); and submerged portions of sewage treatment structures.

A-4 

Non-structurally reinforced concrete exposed to moderate manure and/or silage gases and liquids, without freeze-thaw exposure.

Examples: interior slabs on grade.

S-1

Concrete subjected to very severe sulphate exposures.

 

S-2

Concrete subjected to severe sulphate exposure.

 

S-3

Concrete subjected to moderate sulphate exposure and to seawater or seawater spray.

 

R-1

Residential concrete for footings for walls, columns, fireplaces and chimneys.

 

R-2

Residential concrete for foundation walls, grade beams, piers, etc.

 

R-3

Residential concrete for interior slabs on ground not exposed to freezing and thawing or deicing salts.