Concrete pulping agent SE5800

1. Definition and Core Functions

Definition:
Concrete surface hardeners (or “topping agents”) are specialized admixtures designed to improve the surface quality of concrete by optimizing the distribution of cement paste, reducing bleeding, and enhancing surface density and smoothness.

Core Functions:

1. Bleeding Control: Minimizes water accumulation on the surface, preventing weak layers.
2. Surface Strengthening: Increases surface wear resistance and compressive strength (up to 30% improvement).
3. Aesthetic Enhancement: Ensures uniform color and texture, ideal for decorative concrete.
4. Accelerated Finishing: Shortens troweling time and improves construction efficiency.

2. Key Performance Features

1. Bleeding Reduction
   • Lowers bleeding rate to <0.1 kg/m² (vs. 0.3–0.5 kg/m² for ordinary concrete), eliminating surface dusting and sanding.
2. Surface Durability
   • Enhances wear resistance by 20–40% (tested via ASTM C779), suitable for high-traffic areas (e.g., warehouse floors).
3. Rapid Film Formation
   • Forms a dense paste layer, enabling troweling within 2–4 hours after application.
4. Environmental Compliance
   • Free of heavy metals and low in VOCs, meeting standards like GB 18582-2020 (China’s limit for harmful substances in construction coatings).
5. Broad Compatibility
   • Works with Portland cement, sulphoaluminate cement, and adapts to extreme temperatures (>35°C or <5°C).

3. Applications

1. Industrial Flooring
   • Scenarios: Factories, logistics centers, parking garages.
   • Role: Boosts resistance to abrasion and forklift traffic, reducing maintenance costs.
2. Roads and Airport Pavements
   • Scenarios: Highways, airport runways.
   • Role: Minimizes surface microcracks, extending service life to 15–20 years.
3. Decorative Concrete
   • Scenarios: Colored floors, terrazzo, stamped concrete.
   • Role: Ensures pattern clarity and color consistency while preventing aggregate exposure.
4. Repair and Restoration
   • Scenarios: Old concrete resurfacing, crack repair.
   • Role: Improves bond strength between old and new layers, restoring smoothness.