Frequently Asked Questions
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For over 15 years, Whites Concrete, LLC has been perfecting the art of poured concrete. We are fully licensed, insured and offer a quality workmanship guarantee.
Do you do residential driveways?
Yes, in fact, we offer regular broom finish, colored broom finish, exposed aggregate, stamped concrete, and concrete pavers.
Do you offer any type of warranty?
Yes, one year on workmanship. We have our own warranty department in-house and answer all work orders within a couple days.
Do I need a concrete contractor?
Most likely. Placing and finishing concrete requires knowledge about concrete and the fundamentals of good concreting practices well beyond the capabilities of most do-it-yourselfers. Site excavation, sub grade preparation, and building and setting concrete forms are difficult tasks. Concrete is heavy – about 150 pounds per cubic foot – and difficult to place, consolidate, strike off, level, and finish. Timing of many finishing operations is crucial and best learned through experience and knowing what allowances to make for weather conditions is equally challenging.
How long must my concrete driveway cure before I can drive on it?
The American Concrete Institute and the American Concrete Pavement Association recommend a minimum of seven days following concrete placement before using a concrete driveway.
Can it be too hot or too cold to place new concrete?
Temperature extremes make it difficult to properly cure concrete. On hot days, too much water is lost by evaporation from newly placed concrete. If the temperature drops too close to freezing, hydration slows to nearly a standstill. Under these conditions, concrete ceases to gain strength and other desirable properties. In general, the temperature of new concrete should not be allowed to fall below 50 Fahrenheit (10 Celsius) during the curing period.
Why does concrete crack?
Concrete, like all other materials, will slightly change in volume when it dries out. In typical concrete, this change amounts to about 500 millionths. Translated into dimensions, this is about 1/16th of an inch in 10 feet (.4 cm in 3 meters). The reason contractors put joints in concrete pavements and floors is to allow the concrete to crack in a neat, straight line at the joint when the volume of the concrete changes due to shrinkage.
How do you control the strength of concrete?
How do you remove stains from concrete?
Stains can be removed from concrete with dry or mechanical methods, or by wet methods using chemical or water.
Common dry methods include sandblasting, flame cleaning and shotblasting, grinding, scabbing, planing and scouring. Steel-wire brushes should be used with care because they can leave metal particles on the surface that later may rust and stain the concrete.
Wet methods involve the application of water or specific chemicals according to the nature of the stain. The chemical treatment either dissolves the staining substance so it can be blotted up from the surface of the concrete or bleaches the staining substance so it will not show.
What is the difference between cement and concrete?
Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and cement.
Cement comprises from 10 to 15 percent of the concrete mix, by volume. Through a process called hydration, the cement and water harden and bind the aggregates into a rocklike mass. This hardening process continues for years meaning that concrete gets stronger as it gets older.
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