Indianapolis Concrete, Inc conforms to all BAGI and National Concrete Association standards. Concrete is produced by different suppliers throughout the state. We typically consider location, quality and cost when determining which supplier to use. Concrete consists of natural materials which react to changes in the weather. Placing the same product one day may produce different color product the next.
Indianapolis Concrete, Inc takes all preventative measures to place control joints where necessary to control cracking while maintaining an attractive appearance. Cracks occur when concrete is at its weakest point, or at the control joints.
While curing, the color of the concrete may vary . For example, hydration rates may be sped up in areas that see more sun. This should lessen as the concrete continues to cure. The curing process takes 28 days for final cure, no cars or equipment should drive on concrete in this time although foot traffic is allowable the next day if you are careful.
This process allows exterior concrete to shift during freezing and thawing. Expansion is not normally caulked unless customer specifies expansion to get concrete on it.
Air entrainment is necessary in exterior concrete. Air bubbles are put in the concrete when it is batched to allow the concrete to freeze and thaw without breaking apart. Concrete with stone is used in exterior concrete because of the coarse stone and the uniformity of the rock. Exterior concrete by code also needs to have a texture and needs to have a slope for water run off. That is no flat surface with a slick finish is allowable for exterior concrete. Also, exterior concrete is designed to move as the ground freezes and thaws. We allow this by incorporating expansion joint, which allows different sections of concrete to move as as an independent structure.
Frost protection is the concept that concrete extend below the line that the ground might freeze. Marion county has a code of 3’ below finish grade. Any project with frost protection would not move and typically allows it to be a buildable foundation.
Interior concrete typically does not have air added because it does not go through the freeze/ thaw process. Without air, it finishes much smoother which we call a “hard finish”.
Reinforcement is the use of products in order to decrease the likelihood of the concrete cracking. Depending on the hardness of the concrete, we may also begin saw-cuts at this time. Saw-cuts relieve pressure in sections of concrete, encouraging cracking within the cuts rather than random areas of the concrete. If saw-cuts are done too soon, concrete around the cut may chip. If done too late, cracks may begin to form in undesired areas. Weather plays a huge role in the ability to saw-cut at the appropriate time. Industry standard does not include reinforcement. Some options for re-enforcement include would be non-corrosive, synthetic fibers mixed throughout the concrete or re-mesh wire which looks like wire fencing placed in the middle of the concrete. Steel doweling can be used to limit the amount the concrete can heave or if settling is a concern.
Typically an extremely high-power concrete saw is used to place cuts for control joints or decorative needs. Even with saw-cuts needed there is always a chance that the concrete will crack. Also this tool is extremely hard to control, the professionals at Indianapolis Concrete, Inc understand the importance of the quality of cuts but understand that they will not be perfect when complete. There is also limits in where a cut may be made for example the nature of the tool does not allow saw cuts for the last 6” up against a home.
Concrete sealer protects the concrete by not allowing water to penetrate the surface and freeze and crack, giving the product a much longer life. Sealer also slows the curing process making a harder product, this may also cause discoloration. Sealer is needed on an annual basis and for care please reference the product information sheet. Typically all projects are sealed unless the customer specifies otherwise, for reasons such as plan on overlaying the product or want the bright white look.
Epoxy is a colored sealer that we would apply to interior concrete, like garage floors and basements. When this is applied to existing concrete, it adds around 4000 PSI, strengthening and lengthening the life of you concrete.