What will a concrete contractor do exactly?
Pouring sidewalks is an extremely hard project for beginners to tackle; however, using some preparation, the project should provide a visually pleasing product. Before beginning your project, your first need to make sure you have all the necessary tools at hand, and the area where the pavement is to be done is correctly prepped. Pouring pavement is not just about pouring concrete and allowing it to cure; several steps have to be undertaken first to ensure the end result will not bulge, crack, or get damaged after only a short amount of time.
The soil which the concrete is to be poured onto needs to be level and tamped flat. In some circumstances, it could be necessary to install a layer of gravel above the soil, so it will help to drain and avoid cracking set concrete. For extremely strong and durable sidewalks, rebar needs to be laid above the soil before pouring any concrete. This must be suspended a couple of inches above the soil, so it stays in the middle of the slab. Concrete has a tendency to have poor tensile strength, so rebar will provide added strength concrete usually lacks.
The concrete used must also be carefully considered too. Some owners get a cement truck to deliver already mixed concrete, and a sidewalk contractor needs to work fast once the concrete is poured so it will not cure before they finish the job. Concrete could be mixed on the job, with the help of a cement mixer. Concrete comes in different varieties, and the pressure which is measured in PSI has a great impact on the strength of a concrete sidewalk.
After pouring, the concrete has to be finished as quick as possible. To earn more time, builders must work in cooler temperatures; this will ensure the concrete will set slower. A wood float is sometimes used to level out the concrete and prevent bubbles, and a brush is used to create the texture once the concrete sets.