If you are a DIY enthusiast like me, you must love creating things around the house. And yes, you can even make a concrete driveway the DIY way!
But when it comes to any concrete project, the first step is to prepare and smoothen the soil. While this sounds easy, there are some steps that you should know to ensure that the concrete does not crack after a few years of use.
I was completely oblivious of the process until my neighbor explained it to me. She and her husband had created a beautiful concrete driveway 5 years back, and it is still standing perfectly without any cracks or crevices.
Hi! I am Stacy Smith, and today I will tell you all about how to prepare your site and soil before pouring concrete.
So, dive in!
How To Prepare Your Site And Soil Before Pouring Concrete?
I have divided the process into steps so that it becomes easy for you to understand and follow.
Step 1: Compacting The Soil
My neighbor told me that the preparations for pouring concrete begin with the soil on which the concrete will be placed. The soil needs to be drained properly and compacted so that it can hold the concrete in a stable manner.
If the soil is not drained and there is water underneath, then cracks can form on the cement layer every time the soil flexes. Hence, in order to ensure that the cement stays in place without cracking, this step becomes a mandatory prerequisite.
Step 2: Making The Base
Any structure will be incomplete without a strong base, and DIY concrete driveways are no exception to this rule.
Now, sidewalks generally require a 10-15 cm compact base. But my neighbor suggested that driveways with heavy car traffic need a thicker base layer that would be 10 to 12 inches wide. Remember that the thicker this layer is, the stronger and more durable your driveway will be.
Furthermore, if you live in cold regions, then it is best to make the base around 30 cm thick for better durability.
Step 3: Preparing The Area
Once you have a stable base, you can go on to mark the area with 4 concrete sticks on all the corners. Then, use a string and a line level to mark and measure the slope. In case the area is already sloped, and you want to level it, then you will have to pour a lot of soil in order to create a straight surface.
Next, take a wooden box that will help shape the concrete. Use 35mm x 240mm wooden boards for garages or 35mm x 140mm boards for driveways, and that should give you the perfect results. The concrete can easily bend the boards, and hence you should use extra support after every 2 feet.
Moreover, kickers and stakes will help in retaining the shape and form of the area, so these are important in the process .
Step 4: Smoothing The Ground
The ground needs to be smoothed out when you are preparing to pour concrete, and my neighbor advised me on hiring an excavator to do the job. This way, you can get the ground dug to the required depth and smoothen every side.
It is usually done with a vibrating plate compactor that levels the soil. Once it is used on the base for around 5 times, my neighbor suggested that I pour another 5 cm of soil and level it again.
While at it, be very careful about the tool being used, as it is important that you do not use a jumping jack or a rammer for leveling purposes.
Step 5: Damping The Area
The base needs to be dampened before proceeding, which can be done with a simple water spray. This is specifically essential for areas that are very dry.
Here, I’ll give you a tip to check if the soil has adequate moisture after you have sprayed the water. Simply pick up some soil and make a small ball out of it. If the ball retains shape, then the soil is damp enough to proceed.
Step 6: Tamping
Damping is going to be followed by tamping, which involves using a mechanical or a hand tamper. I used the hand version, and it did take me quite some time to get the process right.
After I was done, my husband told me to walk across the surface and to see if footprints are forming. The idea is that a well tamped surface wouldn’t retain any marks.
Step 7: Pouring Gravel
If you have clay soil, then this step is a must as otherwise, water might seep through the concrete slabs and accumulate underneath. Only 5 cm of gravel will help in preventing any such damage and will ensure that water always drains easily. Again, you can use your hand or mechanical tamper to compact the gravel layer till it is level and smooth.
Step 8: Using Concrete
Once the base is completely ready, you can pour in concrete very carefully near to the base. I will recommend using rakes to level the area and complete the exact form that you want. My neighbor gave me a bull float that I used to round up all the edges and complete the look.
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Final Words
I was strictly advised not to skip any of the steps as that might cause the concrete to crack or become damp. And I’d suggest to ensure that you do not over dampen the base as that could again lead to water accumulation under the concrete.Â
Also, take proper measurements and use strong kickers and stakes to keep the cement in place. Remember that the shape is very essential, and it would not look like professional work if the sides are not in shape.Â
With that, I hope I could encourage you to build a concrete surface. And when you do, I’d love to hear about your experience in the comments section below.Â
Take care and goodbye!