Blue Circle High Strength (40 N) Ready to Use Concrete (20 kg bag) represents a high-performance, pre-blended concrete solution developed under Tarmac’s Blue Circle brand. Designed for scenarios where durability and compressive strength are essential, this product produces concrete with reliable strength exceeding 40 N/mm²—equivalent to C40 specification in structural terms. Perfect for heavier-duty tasks, this product delivers consistent quality and convenience in one 20 kg unit. Reddit+11
Safety & Handling
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Wear gloves and eye protection; avoid skin contact with wet concrete
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Rinse tools thoroughly after use and follow local guidelines for disposing wash water
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COSHH and technical data sheets are available for handling guidance





