Acronal® 7846

Acronal® 7846 is a ~48% styrene-acrylic dispersion engineered specifically for hydraulic binder modification where maximum mechanical strength is the primary requirement. The styrene-acrylic chemistry provides exceptional compressive strength enhancement, often achieving 50-100% increases over unmodified cement mortars, which is critical for structural repair applications. The polymer optimizes the cement hydration matrix, creating a denser microstructure with improved particle packing and reduced porosity. This results in superior tensile and flexural strength, essential for crack resistance in floor screeds subject to heavy loads. Enhanced adhesion to old concrete ensures reliable structural bonding in repair applications where delamination is a common failure mode. The product also improves abrasion resistance for industrial flooring exposed to vehicular traffic, forklifts, and heavy machinery. Water resistance is enhanced through reduced permeability, protecting against moisture-related deterioration. The formulation provides an optimal balance between workability for proper placement and finishing, and ultimate mechanical performance for demanding structural applications.

Polymer-modified mortars using Acronal® 7846 offer significant advantages over conventional cement mortars. Mechanical Properties show dramatic improvements: compressive strength increases of 50-100%, tensile strength increases of 100-300%, flexural strength increases of 150-400%, and bond strength to substrate increases of 200-500%. Durability benefits include reduced permeability preventing water and salt ingress, improved freeze-thaw resistance through better air void systems, enhanced chemical resistance to acids and sulfates, and better abrasion resistance extending service life. Application advantages feature improved workability making placement and finishing easier, reduced segregation and bleeding, better adhesion to damp substrates, and thinner application possible due to higher strength. Long-term performance shows reduced shrinkage cracking, better crack-bridging capability, maintained bond integrity under stress, and extended service life reducing maintenance costs. Trade-offs include higher material cost offset by performance benefits, more complex mixing procedures requiring proper sequencing, shorter pot life requiring faster work, and sensitivity to application temperature and humidity. For structural repairs, high-traffic areas, and demanding environments, the performance benefits clearly justify polymer modification.

Typical dosage ranges from 10-20% by cement weight depending on performance requirements. For standard repair mortars use 10-12%, high-strength structural repairs use 15-18%, and waterproofing screeds with mechanical strength use 18-25%. Mixing procedure is critical: First, dilute Acronal® 7846 with water if needed to achieve target mixing water content. Second, add cement to the polymer-water mixture while mixing continuously with a mechanical mixer. Third, add sand or aggregate gradually while maintaining continuous mixing. Fourth, mix for 3-5 minutes until homogeneous and lump-free. Fifth, allow slurry to rest for 5 minutes then remix briefly before application. Application guidelines specify applying to properly prepared, clean, sound substrates. Dry or highly porous substrates should be dampened but surface-dry. Apply using trowel, brush, or pour-and-spread techniques depending on consistency. Compact thoroughly to eliminate air voids. Cure properly by protecting from rapid moisture loss through misting, wet burlap, or curing compounds. Maintain moderate temperatures (10-30°C) during application and initial curing. Typical formulations include cement (1 part), sand (2-3 parts by weight), Acronal 7846 (10-20% by cement weight), and water (adjusted for workability). VUBS Corporation can provide detailed formulation recipes for specific applications.

Yes, Acronal® 7846 is highly suitable for industrial flooring applications including warehouse floors, manufacturing facilities, logistics centers, and heavy-duty commercial spaces. Performance capabilities include compressive strength exceeding 50 MPa (often 60-80 MPa achievable), flexural strength of 8-15 MPa enabling resistance to point loads, abrasion resistance measured by Böhme method showing minimal wear under traffic, chemical resistance to oils, mild acids, alkalis, and industrial chemicals, and impact resistance preventing spalling from dropped objects or equipment. The polymer-modified screeds can achieve performance classifications including wear resistance class AR 0.5-1.0 (very low wear), compressive strength class C40-C60, and surface hardness suitable for Class 4-5 traffic loads. Applications include heavy forklift traffic areas, automated guided vehicle (AGV) pathways, production line floors, food processing facilities requiring chemical resistance, and cold storage facilities requiring freeze-thaw durability. For optimal performance, proper surface preparation, adequate thickness (typically 30-50mm for industrial loads), proper curing procedures, and consideration of control joints for large areas are essential. VUBS Corporation can provide specifications meeting international standards including EN 13813 for screeds, ACI guidelines for industrial floors, and project-specific performance requirements.