One of the biggest hesitations people have when it comes to
choosing concrete for their projects is that it cracks over
While this practical, durable material is one of the strongest
goods on the market, the forces of time and nature will eventually
cause it to crack–especially if it’s been installed by a
But why does concrete crack, and is there anything that will
prevent this from happening?
These 5 mistakes are some of the most common causes of concrete
1. The concrete dried too fast
Faster is not always better. If your concrete mix doesn’t have
enough water in it, it will dry too quickly and crack prematurely.
Depending on the project, it should take at least a few weeks,
maybe even a month, to dry completely.
2. Your contractor put too much water in the mix
Poorly mixed concrete can create a range of problems. Just like
having too little water in the mix can cause it to crack, so can
having too much water. Water must combine with the concrete at just
the right pace so that it can cure and set properly.
3. Control joints werenât used
Your concrete must be able to properly expand and contract in
different temperatures, otherwise itâll crack. Control joints are
made specifically to help your concrete move about without
If your contractor doesnât use these joints, there wonât be
extra room for the slab to adjust its size with the changing
temperatures, and it will end up cracking due to its internalized
4. It was too cold when your concrete was poured
Just like the amount of water affects concreteâs hydration
process, so does cold weather. When the temperature drops too low,
concrete wonât be able to cure correctly. In these situations,
the pour will either need to be postponed, or the subsurface will
need to be warmed before pouring.
5. Your concrete is too thin
Concrete thatâs too thin is extremely susceptible to cracking.
The proper thickness of your concrete will vary based on its
purpose. For example, a driveway thatâs meant to support vehicles
needs to be thicker than a sidewalk that is not.
Improper concrete thickness is one of the top reasons why DIY
concrete projects fail. When taking on a massive project like this
on your own, itâs easy to miscalculate the weight your concrete
will be expected to bear and the subsequent thickness necessary.
Unfortunately, this will result in severe premature cracking.
At Port Aggregates, our contractors have 40 yearsâ worth of
experience built into their pours. Our beautiful concrete has been
trusted for decades with good reason. When you hire our
professionals, you can say goodbye to premature cracking and rest
assured that your slab has been installed properly. Contact us
today to request