Thursday, October 3, 2013

Focus on Concrete

So you are interested in installing a new walkway, driveway, retaining wall or patio and you are looking into concrete. Concrete is one of the most affordable and frequently used building material out there.



First, let's talk about what concrete is. concrete is a mixture of six different components: Cement, Coarse Aggregate, Fine Aggregate, Water, Fly Ash, and Chemical Admixtures. Concrete can be made into different types depending on the mix ratios and properties of the concrete. For example, a lower water to cement ratio is generally better because it gives the concrete less permeability and is better resistant to the elements. The PSI (strength) of the concrete can also be manipulated. In general we recommend at least 4000 PSI for a driveway and at least 3500 for structures like walkways that will not sustain a lot of force. The chemical admixtures can also be changed to extend or limit setting time and to increase freeze/thaw durability.

You don't have to settle with boring old white sidewalk concrete either. Concrete can be stamped, stained and sculpted to resemble more expensive building materials like pavers and natural stone. Concrete can also be made permeable for a greener option.

While concrete is a relatively strong and durable material, one of its downfalls is that is does tend to crack over time and with changes in the weather. Although the mixture and number of joints can be altered to help prevent cracks, even well installed concrete may crack over the years. However, the versatility and relative low cost of concrete may outweigh this con for many looking to install hardscaping.

If you are interested in installing a concrete structure, give us a call to set up an estimate and discuss your options. 301-603-1080.


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