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• Features & Benefits
• Pack Contents
• Surface Preparation/Priming
• Mixing
• Application
• Wear Surfaces

Features & Benefits

• Provides the ideal combination of toughness, low maintenance, ease of application and high durability coupled with the incorporation of the unique Ardex ‘Rapidry Formula’
• Dries within itself at the same time as it rapidly develops strength
• Can be applied by trowel or pump as a floor finish from 5mm-10mm
• Virtually tension free
• Provides a very high strength surface which has enough resiliency to accept heavy wheeled traffic, such as that found in industrial factories, workshops and warehouses, etc
• Independent testing at Aston University confirmed excellent inherent abrasion resistance, ensuring suitability for a wide range of applications

Pack Contents

Packed in paper sacks incorporating a polyethylene liner - net weight 25kg.

Surface Preparation

The concrete surface must be hard, sound and free of dust and other barrier materials such as paint, lime coatings, plaster, curing agents, laitance, adhesive residues, etc., that will inhibit adhesion to the substrate. The surface strength of the concrete must be sufficient to support the Ardex K 80. BS8204-3 recommends a minimum surface tensile strength of 0.8N/mm² for concrete bases to receive wearing or levelling screeds.

NOTE: For heavy duty locations or where a subsequent resin coating may be applied, the minimum surface tensile strength should be 1.5N/mm².

Use a suitable degreaser to remove polish, wax, grease, oil and similar contaminating substances prior to mechanical preparation. Contact our Technical Support Team for further information.

Concrete surfaces must be mechanically prepared, either by scabbling, grinding or contained shot blasting equipment or similar, and be vacuumed clean prior to priming. All surfaces need priming. It is recommended to prime with a sand blinded application of Ardex R3E Solvent Free Epoxy Primer or Ardex R 5 E Rapid Curing Solvent Free Epoxy Primer in accordance with the technical data sheet. The sand used to create a blinded/aggregate keyed surface should be Ardex Fine Aggregate, approximately 1 to 1.5mm in size. Overwatered, or otherwise weak concrete surfaces must be suitably prepared down to sound, solid concrete by mechanical methods. Direct to earth concrete subfloors must be dry and have an effective damp proof membrane such as Ardex DPM 1C.

When applying Ardex K 80 on top of Ardex SD-TB base mix, ensure any contamination is removed prior to priming with Ardex P 51 primer mixed 1:2 with water using a broom in accordance with the Priming and Preparation data sheet. The surface of the Ardex SD-T B base mix must be thoroughly primed and the primer allowed to dry prior to applying the Ardex K 80.

Note: Any joints or cracks in the concrete base where differential movement is anticipated e.g. movement joints, should be brought through to the finished surface. Ardex K 80 should not be used in external or areas subject to wetting.

Mixing

To the required amount of clean water in a clean mixing container add the powder whilst mixing thoroughly using an Ardex mixing paddle with a 10mm chuck variable speed (600 -1,000 rpm) electric drill, until a smooth lump free mortar is produced. For each 25kg bag of Ardex K 80, add 4.75 to 5 litres of clean water. Use the minimum amount of water for thick applications or cold conditions. Do not use more than 5 litres per bag.

Application

Pour the mixed Ardex K 80 compound onto the prepared sub-floor. The mixed mortar will flow out and self-level during the first 10 minutes of its 30 minutes working time at 20°C. Use an Ardex Pin Leveller with height adjustment for thicker applications. A spiked roller can be used for finishing off depending on the finish required. Minimum recommended temperature 10°C.

Wear Surfaces

The surface of the Ardex K 80 should be protected from spillages such as oil, salts, water, etc., by applying a suitable concrete sealer or resin coating. Suitable sealers will also help ease maintenance and help to maintain the aesthetic appearance.

Note: As the performance of resin flooring systems vary considerably, if compatibility is unknown, a trial application is recommended to assess the suitability and compatibility of the selected coating with Ardex K 80 before work commences. Always contact and rely upon the coating manufacturer for specific application instructions and product guidelines.