Royals has been pouring concrete since it’s inception in 1995, both Commercially and Residentially. Concrete is basically made up of Cement, sand, screenings, water, and different sized aggregates, depending on the mix design and strength. A typical thickness for pouring residential driveways, sidewalks, garage slabs, and sidewalks is 4″. Most of this concrete is poured on a prepared subgrade (natural solid ground) except for the garage slabs which are underplayed with plastic and washed stone for moisture control. Normal concrete has a curing period of 28 days to reach a normal average strength of 3,000 psi (Pounds per Square Inch).
It is most important to properly space both Contraction and Control Joints in order to prevent cracking in concrete. Control Joints are hand tooled into the concrete and should be formed ¼ of the depth of the concrete, ie. 1″ deep control joints for 4″ thick concrete. If the control joints are installed properly, the concrete should crack down in these control joints where it is not as obvious on the surface. Contraction joints are formed using ½” thick Asphalt Impregnated Expansion Material installed the full depth of the concrete. This expansion material allows the concrete to expand and contract with temperature changes. Concrete typically expands in the warmer weather and contracts with cooler temperatures.
Cracking in concrete , whether old or new , is very difficult and expensive to repair. Most of the time, depending on the severity of the cracking, the concrete should be removed and replaced. There are many Flexible Caulks on the market that can be installed, down in the crack, after they are thoroughly cleaned. The main challenge is to prevent water from soaking down and under the concrete which saturates the subgade and allows the concrete to move or it freezes in winter and heaves the concrete upward which causes it to crack and/or eventually break.
Concrete is also available in most colors. We do a Patterned Concrete called Artcrete which offers many different patterns,sizes, and shapes. With any of the colored concretes, it is most important to apply a good quality sealer to maintain a consistent color over the years and prevent fading or oxidation due to sunlight.
We would be more than pleased to answer any technical questions you might have. Just contact us through this website or give us a call.