Non-Chloride Accelerator:
Is identical to calcium chloride except that is non-corrosive accelerator in a liquid which is added at the concrete plant.

Retarder:
Slows down the hydration process resulting in longer setting times. It is commonly used in hot weather conditions to slow down the finishing process. In temperatures above 85 degrees or concrete being placed in direct sun light in hot weather, the hydration process is greatly accelerated and needs to be slowed down to provide enough time to place the concrete.

High Range Water Reducer (Superplasticizer):
A water reducing admixture added at the concrete plant which produces a high slump and increases flowablity. Superplasticizer is commonly used for pumping concrete, producing high strength concrete and enabling the concrete to flow around rebar, matting and in tight areas such as corners and turns without using excessive water.

Reinforcing Wire:
Wire rolls or mats used in concrete slabs to help control shrinkage cracks.

Fibermesh:
A plant added polypropylene fiber mesh product that eliminates the use of wire mesh. Fiber gives consistent reinforcement throughout the concrete mix and reduces the square foot cost for the contractor. Fiber does not require the labor associated with wire mesh and if not properly placed above the ground with chairs, it will lay on the bottom of the slab not in the middle where it needs to be to prevent shrinkage cracks. Note: steel fibers are also available and can increase tensile strength, offer excellent crack control, reduce floor thickness and increase load bearing capacity.

Expansion Joints:
A fibrous material usually _ inch thick, 10 ft long and range in width from 3" to 6". Expansion joints are used to control cracks in slabs, driveways and sidewalks, they should be place 2 feet apart for every inch of thickness of the slab.

Concrete Pumps:
Concrete pumps are separate trucks that contain a pump, with pipe and hose used to place concrete in those difficult to get to areas. Concrete Line Pumps are used to reach areas such as inside homes, back yards and just about any horizontal application up to 300 feet. To reach distances greater than 300 feet or for vertical applications such as high rises Concrete Boom Pumps should be used. Both are available please give at least 3 days notice for pump rental.

Color:
Coloring agents can be added on the job site or at the concrete plant in liquid and powder forms from Davis Colors or L.M. Scofield. There are over 50 colors to choose from which are ideal for driveways, patios, walkways and concrete stamping. Consult the dispatcher or quality control personnel for availability and color charts.

Fly Ash:
Finely Ground glassy granular material formed from an inorganic residue from coal combustion in modern power plants that burn fossil fuel. Fly ash is a pound for pound replacement for cement which provides improved strength, pumpability and workability. Fly Ash can be as much as a 30% replacement for cement in a concrete mix design.

Ground Granulated Blast Furnace Slag:
Finely ground glassy granular material formed when molten blast-furnace slag is rapidly chilled by the immersion of water. Blast-furnace slag is essentially silicates and other bases that is developed in a molten condition simultaneously with iron in a blast-furnace. "Slag" a recycled product is a pound for pound replacement for cement which provides improved workability, pumpability and finishabilty, along with providing increased compressive and flexural strength. Slag can be as much as a 50% replacement for cement in a concrete mix design.

Links:
L.M. Scofield Colors
Davis Colors
Masterbuilders Admixtures
SI Concrete Systems (Fibermesh)
Stallone Testing Laboratory
St Lawrence Cement (Slag)
Essex Cement
SeparationTechnologies (Fly Ash)