– For superficial reinforcing of floor slabs and screeds where good abrasion resistance and reduced dusting is required.
– It is suitable for floors subject to severe mechanical wear, such as warehouse, parking lots, workshop, factory floors etc.
– Duracem Floor Hardener is applied on fresh concrete slabs to improve abrasion resistance and to reduce dust.
MAIN CHARACTERISTICS & ADVANTAGES
– Intrinsic colouring.
– High resistance to abrasion.
– Improves resistance to impact.
– Reduces dust.
– Easy to apply: Just sprinkle Duracem Floor Hardener onto the fresh slab.
PHYSICAL & MECHANICAL PROPERTIES
– Hard aggregate of mineral origin.
– Even finish obtainable when properly smoothed.
– Density: Approx. 1, 4.
– Mohs hardness: 7-8 (steel score)
PREPARATION OF SUBSTRATE : CONCRETE SLAB
When the mix has reached plasticity, smooth out the freshly placed concrete and flatten off with a vibrating straight edge. It is recommended to use a mechanical trowel for the smoothing operation.
Cement mortar screed shall have a minimum thickness of 50 mm. Care should be taken to ensure good adhesion between concrete and screed. The same application details apply as mentioned above.
SPRINKLING DURACEM FLOOR HARDENER
The concrete is ready for the Duracem Floor Hardener sprinkling when a thumb pressed hard on the surface leaves a 3-5 mm deep print. Duracem Floor Hardener is then spread by hand or with a suitable device, with consumption at a rate of 4 to 5 kg/m².
When Duracem Floor Hardener has been moistened by the concrete water, use a low speed mechanical trowel held perfectly flat.
If parts of the surface are loose, or if the laitance rises, the concrete is still too fresh and it is necessary to wait longer before compacting.
As soon as plasticity or initial set permits, the presmoothing is carried out with the same low speed mechanical trowel equipped with metal smoothing gear at the minimum angle.
The final smoothing will be performed later with a high speed trowel. (preferably PVC Blades)
The Duracem Floor Hardener surface must be protected to prevent early dry out and cracking.
Joints for shrinkage and insulation, especially around columns, shall be formed approx. every 4-5 m in both directions. Take into account existing joints in the base preparation and for the alignment of columns and traffic lanes. Joints shall be cut to approx. 1/3 thickness of the slab.
PUTTING THE TREATED SURFACE INTO SERVICE
Depending on ambient temperature and the type of cement used in the slab, the preusage waiting time is:
24 – 48 hours for foot traffic
7 – 10 days for light vehicles traffic
28 days for normal traffic
Average consumption: 4 to 5 kg of Duracem Floor Hardener per m², yielding a 2-3 mm strengthened coat.
9 months shelf life in unopened bags protected from humidity.
25 kg / bag
Safe to handle