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Site preparation, where they backfill or excavate, is one of the main tasks of concrete contractors. Contractors ensure that all vegetation, rocks, trees, garbage, and shrubs have been removed. They ensure that the ground has been properly prepared and graded. This is necessary to ensure that the building can withstand extreme and mild weather conditions. Concrete can become brittle if it isn't properly prepared to resist the settling of dirt and moisture.
Concrete is versatile and can take many different shapes and designs. Concrete contractors are responsible for formwork. There are many innovations today in formwork. Prefabrication, which reduces the time and costs of formwork while also making it less costly and wasteful, is an example. Formwork is used to create the molds needed for concrete placement. It also helps to hold the concrete in place as the mixture hardens. Based on the intended use of the concrete, the shapes and forms may be set with plastic, metal, or wooden.
Placement is an important part of the job of a concrete contractor. The concrete is poured into molds. With rakes, shovels and other tools, the team of construction workers will move the concrete around the forms.
The concrete is then compacted and consolidated after it has been poured. Finishes can include a broom-finish, in which a special brush is used to smoothen the concrete. If necessary, decorative elements can be added to concrete. This could include dye, design or other details.