Frequently asked questions:
What does Icon Concrete do to minimize cracking?
To minimize the chances that concrete will crack, the following steps can be taken: Stabilize the underlayment (the soil or other material beneath the concrete). If you have expansive, high clay soil or the soil contains a high ratio of organics, you run some risk of the underlayment settling, shifting, or heaving. The remedy? In certain cases it may be necessary to remove and replace the existing underlayment material with what is called "structural fill", i.e. rock or crushed concrete (also known as road base). While no one can be certain that concrete will not crack, having stable underlayment is key.
2. What causes the top layer of concrete to chip away over time, showing the rock in the concrete?
Chipping, or "spalling", can have a number of possible causes:
The concrete may have been too hot when it was being "troweled", or smoothed over before being groomed.
The concrete workmen may have applied water to the concrete to extend the amount of time they had to finish the concrete.
The concrete may have been sourced from a location far away from the job site, which permits the mix to begin curing even before it is poured out. As a result the concrete can "set up" and cure too rapidly. (Concrete cures better when it cures slowly)
Spalling can also occur due to water from within the curing concrete freezing, only to appear months, or years, later.
There are several precautions to preventing spalling, which we would be happy to discuss with you.