Concrete Calculations
Formula for a Cube.
Length x Width x Height
A mixture of rock or stone, sand, Portland cement and water.
Concrete (Portland cement concrete)
A material other than aggregates, cement, or water used as an ingredient of concrete...
Admixture
A composite of concrete and reinforcing steel.
Reinforced Concrete
A method used in the construction of permanent concrete barrier rail.
Cast-in-place or Extrusion
Formula for a cylinder.
pi (3.14159) x Radius2 x Thickness
Concrete is proportioned and mixed using this ratio.
Water / Cement Ratio (cementitious material)
Added to concrete to increase resistance to freeze/thaw conditions.
Air Entrainment
Another name for a reinforcing steel bar.
Rebar
The specified interval for expansion joints in curb and gutter.
90 Feet
Formula for Square Yards.
Length x Width (in feet) Divided by 9
The process by which cement reacts with water, eventually creating a stone-like product.
Hydration
Slows down the hydration process.
Retarder
Minimum "grade" of bar steel reinforcement in specifications.
Grade 60
The specified interval for expansion joints in sidewalk where curb is not adjacent.
30 Feet
Formula for Cubic Yards.
Length x Width x Depth (in Feet) Divided by 27
Aggregates should be in what condition before use in a concrete mixture.
Fully Saturated
(Saturated Surface Dry)
Enhances the workability of concrete.
Plasticizer (SuperPlasticizer)
(High-Range Water Reducer)
Minimum length of the sample bars required for testing.
30 Inches
The maximum time allowed to complete discharge when using a truck mixer or agitator.
90 Minutes
The reason Contractors add 10% to their concrete order.
To account for irregularities and give them some wiggle-room.
The "Recipe" by which ingredients are proportioned.
Mix Design
A By-Product of Coal-Fired Power Plants.
Fly Ash
A type of "splice" that may be found in a reinforcing steel installation.
Lapped, Welded, Mechanical
The application rate for curing compound in normal concrete operations.
1 Gallon per 150 Square Yards