Description Product Overview ARDEX A 45 is a rapid hardening and rapid drying, slump-free repair mortar designed for internal concrete repairs and subfloor preparation. It delivers exceptional strength, hardness, and a shrinkage-free finish, making it suitable for both horizontal and vertical applications. Developed using ARDEX rapid drying technology, the mortar sets quickly and can receive floor coverings in approximately 90 minutes, allowing for fast-track installations. It is ideal for forming ramps, coves, patching damaged areas, and filling cracks in concrete and screeds. ARDEX A 45 provides a smooth finish when trowelled, making it suitable for direct floorcovering application once cured. Key Features Rapid hardening and drying for fast-track installations Receives floor coverings in approximately 90 minutes Slump-free consistency for vertical and horizontal repairs Shrinkage-free finish with high strength and durability Suitable for forming ramps, coves, and patch repairs Can be feathered or bulk filled with aggregate Excellent adhesion to concrete and masonry substrates Suitable for internal applications Applications Repairing concrete subfloors and stair treads Filling holes, cracks, and damaged areas Forming ramps and coves Making good around penetrations, door frames, and services Preparation prior to vinyl, carpet, timber, and tile installation Commercial and residential flooring projects Notes Mix 20kg bag with approximately 4.5 litres of clean water Working time approx. 10–15 minutes at 20°C Initial set occurs in approximately 15 minutes Apply using a steel trowel to required thickness Suitable for thicknesses from 2mm to 30mm (bulk fill higher with aggregate) Ensure substrate is clean, sound, and properly prepared Prime non-absorbent surfaces with ARDEX P 82 where required Technical Information Technical Specifications: Type Rapid hardening repair mortar Mix Ratio 20kg powder : approx. 4.5L water Working Time 10–15 minutes at 20°C Initial Set Approx. 15 minutes Ready for Floorcoverings Approx. 90 minutes Application Thickness 2mm – 30mm (bulk fill up to 40–50mm with aggregate) Coverage Approx. 12 m² per 20kg bag at 1mm Consumption Approx. 1.6 kg/m² per mm Substrates Concrete, cement render, masonry, primed impervious surfaces Location Internal applications Compressive Strength Approx. 25 MPa (1 day), 40 MPa (28 days) Packaging 20kg bag Shelf Life Approx. 12 months (unopened) This mortar is designed for rapid repair work where minimal downtime is required. Its fast setting time, high strength, and slump-free consistency make it suitable for a wide range of patching and preparation tasks in professional flooring applications.
