Granolithic Concrete

Granolithic Concrete

Granolithic concrete pavements are highly abrasion resistant, cementitious industrial floors and traffic areas with a minimum thickness of 20mm. They are laid over a cementitious substrate (e.g. old concrete) with a bonding layer and have a density of > 2100 kg/m³. If the layer thickness exceeds 50 mm, a light reinforcement mesh (minimum 100 ×100 × 4 × 4) is normally installed.

Composition

Aggregate

–0–4 mm for a layer thickness of up to 30 mm

–0–8 mm for a layer thickness of 30–100 mm

Cement

–400–500 kg/m³

Substrate/adhesion

Before placing a bond coat is brushed into the slightly damp (prewetted) substrate.

The granolithic concrete is placed “wet on wet” onto the bond coat and carefully compacted, smoothed off and then finished with power floats. The abrasion resistance is further improved by applying dry shakes during the floating operation. Polypropylene fibers included in the mix can also counteract shrinkage cracking.

Curing

 Always apply a curing agent (which must be mechanically removed if a coating is to be applied at a later date), and/or cover with sheeting, preferably for several days.