High-Strength Ultrafine GGBFS-Fly Ash Composite Powder

Our product boasts an optimized particle size distribution (D50=14.73μm), a key technical advantage that ensures perfect compatibility with cement clinker. This fine particle size acts as a micro-aggregate, filling the interstitial voids between cement grains and densifying the concrete microstructure from the earliest stages of hydration. Rigorous testing confirms that when incorporated at a 30% dosage, the 1-day compressive strength reaches 13.2 MPa, with steady growth to 28.2 MPa at 3 days, 39.0 MPa at 7 days, and an impressive 56.2 MPa at 28 days—surpassing the strength of pure cement samples. Even more notably, strength continues to develop over time, reaching 67.7 MPa at 90 days, a testament to the sustained pozzolanic reaction that enhances structural integrity decades after placement.

Beyond strength, this composite powder improves concrete’s resistance to sulfate attack, alkali-aggregate reaction, and permeability, making it ideal for high-performance concrete projects, bridge decks, marine structures, and other infrastructure demanding superior durability. It also reduces the heat of hydration, minimizing the risk of thermal cracking in mass concrete pours. For cement manufacturers, it serves as a reliable, high-quality supplementary cementitious material (SCM) that can extend clinker usage while maintaining or improving product performance, aligning with global trends toward sustainable construction materials.