Concrete is a mixture of paste (cement and water) and aggregates (sand and stone) that bind together to form a rock like mass known as concrete. Concrete also contains chemicals admixtures to enhance the specific properties of concrete. These chemicals are used to improve the workability and durability of concrete. Concrete can be molded or formed into any shape when it is newly mixed and becomes strong and durable as it hardens. Concrete is used to construct anything from skyscrapers or dams to patios and curbs.
What are the keys to a successful project?
The key to achieving a strong, durable concrete for your projects are as follows:
Utilizing high quality raw materials
Ordering the proper concrete for the application
Skillful placement and finishing
Following proper curing practices and protecting the concrete
What is Air Entrainment?
All concrete that is exposed to freeze-thaw must be air entrained using a chemical admixture. This involves the placement of many tiny air bubbles that are 1mm or less, within the concrete. These air bubbles reduce the stress on concrete when water expands during the transformation to ice during colder weather.
What are some of the key things to look for during concrete placement?
When looking for concrete placement, there are key factors to consider. These factors are as follows:
Has the subgrade been properly prepared and compacted?
Ensure the area is properly drained and sloped to prevent water build-up.
Ordering the proper concrete.
Place the concrete within 120 minutes of batching.
Do not allow the addition of water to the concrete after the concrete placement has started.
Has the contractor prepared a control joint layout to prevent uncontrolled cracking?
How will the concrete be properly cured? What curing method will be utilized to protect the concrete and how long will the protection be applied?
