Preparing the Formwork
There are other steps preceding formwork preparation but it’s this part where concrete actually starts to be involved. Concrete forms are crucial in the building process because they hold concrete until it hardens. They are made from wood, metal, or plastic, although in most large projects where huge volumes of concrete are involved, metal forms are the best option. There are suppliers that offer metal concrete forming systems to builders to help them achieve the best result.
Pouring of Concrete
Once the forms are completely set and the concrete is thoroughly mixed, concrete placement may commence. The minimum volume of concrete required to ensure that the finished structure is safe is 470 lb. per yard. Lower than that could mean there are voids that need to be filled within the concrete. This is why the newly poured concrete within the form is applied with vibration to allow concrete to settle and eliminate the voids.
For slabs, early finishing is usually done by screeding the top surface using a large metal or wood board. Screeding helps compact the concrete and level the surface further so that it will cure flat. On the contrary, this isn’t possible with vertical structures, such as columns since the outer layer is covered by the form. Usually columns are finished after the concrete cures.
For concrete to have the most desirable strength and durability, it has to be properly cured. Curing is the process of maintaining the right moistures content and temperature in concrete throughout the time it is drying. It commences the moment the concrete has been placed and left to dry within the formwork.
Performing the concrete placement and curing procedure efficiently ensures the stability of a structure. Then again, without a steady concrete form, you cannot achieve the perfect shape and solidity of your concrete. Thankfully, there are suppliers such as LECO Concrete Forms and Supply that provide high-quality concrete wall forms for sale to help you with all you construction needs.
CIP 11 - Curing In-place Concrete, nrmca.org