English English
This product is a two-component waterproof coating composed of a polymer emulsion combined with inorganic powders such as cement-based materials, and features a “combination of rigidity and flexibility.” Specifically developed for roads and bridges, this polymer-cement-based waterproofing coating offers excellent heat resistance, adhesion, and shear strength. Once applied, it forms a high-strength, tough waterproof coating capable of withstanding long-term load movements on roads and bridges, preventing structural damage, rebar corrosion, and concrete carbonation caused by water infiltration, thereby extending the service life of these structures.
Products are labeled in the order of name, usage, category, and standard number.
Example: Type I polymer-cement waterproofing coatings for roads and bridges are labeled as:
Waterproof Coatings for Roads and Bridges—JS—JC/T 975-2005
Ingredients
Joint Sealing
Cleaning, Inspection, and Acceptance
Installation of the Additional Layer Waterproof Protective Layer
Apply multiple coats of the waterproofing layer
◎The substrate surface must be solid and level. When leveling with cement mortar, it must be properly cured and must not exhibit any signs of crumbling, sanding, or peeling.
◎ Concrete surfaces must be roughened, planed, or shot-blasted.
Construction Procedures:
◎ After the substrate has been cleaned, key areas such as inside and outside corners, expansion joints, and construction joints should be reinforced.
◎ Apply a primer to the substrate to improve bond strength and shear strength. Once the primer is fully dry, proceed with the application of the waterproof coating.
◎ Measure out the materials according to the specified proportions. While stirring, slowly pour the powdered material into the liquid mixture and mix thoroughly until no lumps remain. Then apply the coating, ensuring that the thickness of each coat does not exceed 0.5 mm. Add a fiber-reinforced layer as required by the design specifications.
◎Before paving asphalt concrete, a separation layer can be created by spreading fine-grained asphalt mixture over the surface of the waterproofing membrane to prevent damage to the membrane.
◎ Stir the paint thoroughly before use. Use the mixed paint within 2 hours.
◎ The recommended application temperature is 5–35°C.
◎ The waterproofing layer must be completely dry before proceeding to the next step. Do not walk on the waterproofing layer or perform any other work while it is still wet.
For a 1.0 mm-thick coating film, the total paint consumption is approximately 2.2–2.4 kg/m².
Suitable for anti-corrosion, anti-seepage, and waterproofing projects on bridges and highways.
Applicable Standard: JC/T 975-2005 “Waterproof Coatings for Roads and Bridges”
General Properties of Coatings
| No. | Item | Technical Indicators | |
| 1 | Solid Content /% ≥ | 65 | |
| 2 | Surface drying time, h ≤ | 4 | |
| 3 | Actual work time, h ≤ | 8 | |
| 4 | Heat resistance, °C | 160, no running, sliding, or dripping | |
| 5 | Water impermeability, 0.3 MPa, 30 min | Waterproof | |
| 6 | Tensile strength, MPa ≥ | 1.20 | |
| 7 | Elongation at break, % ≥ | 200 | |
| 8 | Low-Temperature Flexibility /°C | -10, no cracks | |
|
9 |
Salt Treatment |
Tensile strength retention rate, % ≥ | 80 |
| Elongation at break, % ≥ | 140 | ||
| Low-Temperature Flexibility, °C | -5, no cracks | ||
| Increase in mass, % ≤ | 2.0 | ||
|
10 |
Heat Aging |
Tensile strength retention rate, % ≥ | 80 |
| Elongation at break, % ≥ | 150 | ||
| Low-Temperature Flexibility, °C | -5, no cracks | ||
| Heat expansion coefficient, % ≤ | 1.0 | ||
| Mass loss, % ≤ | 1.0 | ||
| 11 | Bond strength between the coating and cement concrete, MPa ≥ | 0.70 | |
Coating Application Performance
| No. | Item | Indicators |
| 1 | Shear strength at 50°C, MPa ≥ | 0.20 |
| 2 | Bond strength at 50°C, MPa ≥ | 0.05 |
| 3 | Water Resistance After Hot Rolling | 0.1 MPa, 30 min—no water penetration |
| 4 | Joint Deformation Capacity | 10,000 cycles without failure |
