Floors & Trafficked Areas - Problems & Solutions

(1) Water infiltration through substrate concrete where damp proof membrane has failed. Greater use is being made of below ground structures requiring effective waterproofing.

Active water infiltration must first be arrested using FastfIll WP, a rapid setting, Portland cement based mortar which sets in 2 minutes. This non-caustic mortar is more reliable and safer to use than traditional cement admixtures.

The surface is then saturated before priming with Cemprotec EF Primer, to seal the concrete prior to the application of a 2mm coat of Cemprotec E-Floor. This high performance cement and epoxy modified polymer coating is capable of withstanding 10 bar hydrostatic pressure yet is tough and durable enough to withstand heavy trafficking.

(2) Treatment of damp or freshly laid concrete floors without the risk of osmotic blistering when impervious finishes are subsequently applied.

Cemprotec E-Floor is applied to prepared and saturated concrete floors that have been primed with Cemprotec EF Primer. It is poured out and spread to a minimum 2mm thickness prior to de-airentraining with a spiked roller. To aid curing and enhance the adhesion of any coatings that may be subsequently applied, a fine quartz sand can be broadcast into the surface of the freshly laid material.

Only 48 hours curing is required before impervious floor coatings and finishes can be laid, which will be resistant to subsequent osmotic blistering. Please consult our technical department regarding compatibility tests.
 

(3) Deterioration of the surface of concrete slabs and reduction in slip resistance through freeze - thaw and trafficking exposure.

All potholes and damaged areas are first reinstated with Fastfill, a shrinkage compensated, fibre reinforced, Portland cement based mortar, which sets in 10 minutes.

Following saturation of the substrate and priming with Cemprotec EF Primer, the mixed Cemprotec E-Floor HB is poured out and spread to a minimum depth of 3-6mm using a skid leveller, prior to spike rollering to remove entrapped air. Whilst the surface is still wet a dried, quartz sand is broadcast into the surface to provide a slip resistant finish and to aid curing. Excess sand can be removed after a minimum cure time of 4 hours. To enhance longevity the surface can then be sealed with Cemprotec Sandseal 760.
 

(4) Demarcation of special needs parking spaces or on trafficked areas.

Coloured quartz sand can be broadcast into freshly laid Cemprotec E-Floor or E-Floor HB not only to act as a curing aid but also to introduce a delineation or a decorative effect into the system.

After a minimum of 4 hours’ curing, the excess sand is removed and the surface sealed with Cemprotec Sandseal 760, a clear, non-yellowing, high performance moisture triggered coating is applied by squeegee or roller. This hard wearing coating exhibits excellent chemical resistance and increase the durability of the slip resistant finish.
 

(5) Reinstating joint nosings on floors slabs or treads on stairs.

Following breaking out of unsound concrete and thorough saturation of the substrate, joint nosings on floor slabs or treads on stairs can be reinstated with Fastfill. This shrinkage compensated, Portland cement based mortar, which benefits from polymer and fibre modification, sets within 10 minutes to give a durable reliable repair even in the most heavily trafficked areas.

When carrying out deeper repairs, the product can be bulked out with either a coarse aggregate or a sharp concreting sand to provide a cost effective solution.
 

(6) Repairing voids or worn trafficked surfaces or runways where rapid return to service is required.

All areas should be thoroughly prepared to remove contamination and unsound concrete and the edges of the repair stepped to a minimum depth of 10mm to prevent feather edging. Ensure that the substrate is saturated without any standing water.

Where speed of reinstatement is important, all voids and removed concrete should be reinstated with Fastfill, a shrinkage compensated, polymer modified, Portland cement based repair mortar, which sets in 10 minutes.

In areas where speed is not critical, Monomix HD, a single component, high strength, polymer modified fibre reinforced mortar, provides a durable solution.