April 21, 2018


Commercial Concrete’s “Ready-Mixed” Concrete

Commercial Concrete delivers Ready-Mixed Concrete. Each load of concrete is custom made according to your specifications.  Just before our truck leaves for delivery, our Ready Mix concrete is made specifically to fit your mix design. The ready mix batch is computer generated to guarantee accurate products and reproducible mixes.

Calcium Chloride: Accelerates the hydration process and results in shorter setting times as well as earlier compressive strengths. Calcium chloride is commonly used in cold weather conditions along with hot water provided at the concrete plant.  This speeds the finishing process and assists in the removal of forms.   It is important to note that calcium chloride is not recommended for use with rebar, metal decking, electrical conduits or metallic based material.

Non-Chloride Accelerator: This is identical to calcium chloride except for the fact that it acts as a non-corrosive accelerator in a liquid.  Non-chloride accelerator is also added at the concrete plant.

Retarder: This slows down the hydration process and results in longer setting times. Retarder is commonly used in hot weather conditions as it slows down the finishing process. When the temperature is above 85 degrees or when concrete is being placed in direct sun light in hot weather, the hydration process is greatly accelerated.  Retarder helps to slow down the hydration process to provide enough time to place the concrete.

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

Fibermesh: A polypropylene fiber mesh product added at the concrete plant that eliminates the use of wire mesh. Fiber gives consistent reinforcement throughout the concrete mix.  It also reduces the square foot cost for the contractor. Fiber eliminates the labor associated with wire mesh.  If fibermesh is not properly placed above the ground with chairs, it will lay on the bottom of the slab instead of in the middle where it needs to be to prevent shrinkage cracks.   It should be noted that 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 that is generally 1/2 inch thick, 10 ft long and range in width from 3″ to 6″. Expansion joints are commonly used to control cracks in slabs, driveways and sidewalks.  Expansion joints should be placed 2 feet apart for every inch of thickness of the slab.

Concrete Pumps: Concrete pumps refer to separate trucks that contains a pump, with pipe and hose.  Concrete pumps can be used to place concrete in areas that are difficult to reach. Concrete Line Pumps are proven useful when trying to reach areas such as inside homes, back yards and just about any horizontal application up to 300 feet.  Concrete Boom Pumps should be used to reach distances greater than 300 feet or for vertical applications such as high rises.

Color: Coloring agents can be added either on the job site or at the concrete plant.  Colorin agents come in liquid and powder forms from Davis Colors or L.M. Scofield. There are over 50 colors to choose from.  Coloring agents are ideal for driveways, patios, walkways and concrete stamping. Feel free to contact us for availability and color charts.

Fly Ash: Fly ash refers to the finely ground glassy granular material formed of an inorganic residue resulting from coal combustion in modern power plants that burn fossil fuel. Fly ash is considerd a viable pound for pound replacement for cement because it provides improved strength, pumpability and workability. Fly Ash can be used as much as a 30% replacement for cement in a concrete mix design.  Fly ash is an environmentally friendly solution.

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