Introduction to Polycarboxylate Superplasticizer (PCE) 1. What is Polycarboxylate Superplasticizer? Polycarboxylate Superplasticizer (PCE) is a new generation of high-performance concrete admixture with high water reduction rate, good slump retention, environmental protection and high adaptability. Compared with traditional naphthalene and melamine water reducers, polycarboxylate superplasticizer has better performance and has become the preferred admixture for **modern high-performance concrete (HPC)**. 2. Main performance characteristics of polycarboxylate superplasticizer ✅ High water reduction rate (25%-40%): significantly reduce the water consumption of concrete and improve strength. ✅ Good fluidity: greatly improve the fluidity of concrete, suitable for self-compacting concrete and pumping construction. ✅ Excellent slump retention: maintain the workability of concrete for a long time, suitable for long-distance transportation. ✅ Environmental protection: does not contain formaldehyde, is environmentally friendly, and meets the requirements of green buildings. ✅ Strong adaptability: suitable for different types of cement, mineral admixtures and different construction conditions. ✅ Low shrinkage: Reduce shrinkage and cracks of concrete and improve durability. 3. Main application areas Polycarboxylic acid high-efficiency water reducer is suitable for various concrete projects, especially those that require high fluidity, high strength and high durability, such as: (1) High-strength concrete Applicable to high-strength concrete of C50-C100 and above, improve early strength and shorten construction period. Typical applications: high-rise buildings, bridges, and large-span structures. (2) Pumped concrete Enhance the pumpability of concrete and improve construction efficiency. Applicable to high-rise buildings, large-volume concrete, and long-distance pumping. (3) Self-leveling and self-compacting concrete Applicable to floor projects and underground projects, reduce vibration and improve construction quality. (4) Mass Concrete Low water-cement ratio, reduced hydration heat, and prevent cracking of mass concrete. Typical applications: dams, tunnels, nuclear power plants, ports. (5) Precast Concrete Improve early strength, accelerate demoulding, and improve production efficiency. Applicable to factory production of precast beams, pipe piles, PC components, etc. (6) Durable Concrete Improve impermeability, frost resistance, and sulfate corrosion resistance, and extend the service life of concrete. Applicable to marine concrete, underground structures, and transportation infrastructure. 4. Usage method Recommended dosage: 0.1%-0.3% (by cement mass ratio). It can be used alone or compounded with retarders, air entraining agents, etc. to improve comprehensive performance. It is recommended to conduct a compatibility test before use to optimize the mix ratio. Polycarboxylate high-efficiency water-reducing agent (PCE) is currently the most advanced concrete admixture, widely used in high-strength, pumpable, self-leveling and precast concrete. It has high water reduction rate, excellent slump retention, environmental protection and high adaptability.