Construction of slabs on grade is a service our company has offered since 1969, and was one of the concrete services our company was founded on. Slabs on grade are constructed from concrete, with varying strength and thickness based on the intended use of the slab. Slabs on grade are used as building floor slabs, exterior concrete aprons, and bridge approach slabs. The design and placement of concrete slabs on grade is usually governed by ACI (American Concrete Institute) and PCA (Portland Concrete Association).
There are several factors that affect the overall performance of slabs on grade. Three of the main factors include the sub grade of the slab, the slab design, and the placement procedures of the slab. The sub grade will typically consist of a well-compacted engineered fill or residual soil with suitable bearing capacity. The slab design will determine the thickness and reinforcing required within the slab. The design will take factors into account such as slab loadings, shrinkage and expansion, sub-grade requirements, and intended slab usage. The slab placement will include proper placement methods, consolidation of the concrete, slump control, and curing methods.