Exterior concrete slab

Project description

Exterior concrete surfaces require a different approach from interior ones: the concrete must resist freeze-thaw cycles and the surface must allow proper rainwater drainage. This project used concrete of an appropriate grade and freeze-resistance class, with defined slopes towards edges and drains.

The slab was divided by expansion joints into rational fields to control thermal and hydration shrinkage of the concrete. The joints were subsequently filled with a permanently elastic sealant that prevents the ingress of water and dirt into the substrate.

The final surface finish was brushed to increase the friction coefficient, which is essential for traffic safety on a wet surface.

• Concrete resistant to freeze-thaw cycles (XF class)
• Defined slopes for rainwater drainage
• Expansion joints in rational fields
• Permanently elastic joint sealing
• Brushed final finish for increased friction
• Dimensioned for vehicles and handling conditions

The surface is in use without visible damage from frost or precipitation, and regular inspection of expansion joints ensures its long service life.