This specially formulated, full aliphatic water-based polyurethane is a two-component (A+B) topcoat designed to provide exceptional and long-lasting protection for concrete structures, with a dedicated focus on bridge applications. It delivers the high performance of solvent-based coatings while being safe, non-flammable, and containing zero VOCs, making it suitable for large-scale and environmentally sensitive projects.
Exceptional Durability & Abrasion Resistance: Withstands heavy traffic and mechanical wear, evidenced by an abrasion resistance of < 30 mg loss (ASTM D3884) and scrub resistance (sand) > 12,000 cycles (ASTM D2486).
Superior Weathering Resistance: The full aliphatic formula provides excellent UV resistance, preventing chalking and yellowing. After 2000 hrs of QUV-B testing, it shows no chalking, >70% gloss retention, and a color change dE < 5.0.
High Chemical & Stain Resistance: Offers robust resistance to alkalis, acids, and common staining agents like oil, grease, and de-icing salts, ensuring structural aesthetics and integrity are maintained.
Low Water Absorption & Excellent Protection: Features very low water absorption (<0.5% @24hrs, ASTM C1585), effectively shielding bridge concrete from water ingress, freeze-thaw cycles, and corrosion.
Safe for Application in Confined Spaces: As a water-based, zero-VOC, and non-flammable product, it is ideal for the challenging and enclosed environments often encountered in bridge construction and maintenance.
Matte Finish & Easy Cleanability: Cures to a matte appearance without light reflection, reducing glare for drivers. Its dense surface allows for excellent cleanability, even with waterjet washing.
Scrub Resistance (Detergent): > 200,000 cycles (TIS 2321-2549)
Scrub Resistance (Sand): > 12,000 cycles (ASTM D2486)
Abrasion Resistance: < 30 mg loss (ASTM D3884)
Water Absorption (24 hrs): < 0.5% (ASTM C1585)
Alkaline & Acid Resistance (10% NaOH & 10% Acetic Acid): > 24 hrs no damage (ISO 2812-4)
Clean-ability (Waterjet): Excellent
QUV-B Test 2000 hrs:No Chalking (ASTM D4587)
Retained Gloss > 70% (ASTM D4588)
Color Change dE < 5.0 (ASTM D4589)
This topcoat is highly recommended as a final protective layer for:
Bridge Concrete Decks and Substructures
Concrete Parapets and Barriers
Other transportation infrastructure elements exposed to harsh environmental conditions
Surface Preparation: The concrete surface must be completely clean, sound, and free of dust, oil, and laitance.
Mixing: Use a low-speed mixer (approx. 300 rpm). Add component B to component A and mix thoroughly for at least 3 minutes to ensure a homogeneous blend.
Application: Apply using a roller. The material dries relatively quickly; avoid excessive rolling after the initial application to prevent roll marks and surface defects.
Recoating: If a second coat is required, ensure the first coat is completely dry before application.
Cleaning: Clean all tools and equipment with water immediately after use.
As a professional manufacturer of water-based industrial coatings, we provide environmentally friendly and high-efficiency coating solutions specifically designed for bridge steel structure corrosion protection. Our dedicated water-based anticorrosive paint utilizes advanced resin technology, with VOC content strictly controlled below 50g/L, complying with environmental standards. It emits no irritating odor during application, ensuring workers' health and construction safety.
In terms of anti-corrosion performance, this product is certified for ISO 12944 C5-M severe environments and exceeds 2000 hours in salt spray testing. It effectively resists corrosive media such as acid rain, salt mist, and chloride ions, making it particularly suitable for bridges in coastal and high-humidity regions. The coating also offers excellent UV resistance, preventing chalking and fading during long-term outdoor exposure to maintain the bridge's appearance. For application, the product features fast drying (touch-dry in 30 minutes) and is suitable for high-pressure airless spraying, achieving a single-coat film thickness of 80-120μm, significantly improving application efficiency and reducing project timelines.
Our water-based anticorrosive paint is widely used on various bridge components, including steel box girders, stay cables, and piers. For the high-vibration environment of steel box girders, the coating provides strong adhesion (≥5MPa) to prevent cracking. For flexible structures like stay cables, the film offers excellent elasticity to accommodate thermal expansion and contraction of the metal. On concrete piers, the product provides resistance to moisture and carbonation, effectively extending the service life of the bridge.
We offer complete coating systems, including water-based epoxy zinc-rich primer, water-based epoxy mica iron intermediate coat, and water-based fluorocarbon topcoat, forming a multi-layer protection system to meet diverse bridge anti-corrosion needs. With extensive experience in bridge coating applications, our solutions have been successfully used in multiple large-scale bridge projects. We also provide value-added services such as complimentary technical guidance and custom color matching to ensure construction quality and precise alignment with project requirements.
Westcoast New Area, Qingdao City ,Shandong Province ,China
