Tunnel and Bridge Products

Railway Polyurethane Waterproofing Coating
Railway Polyurethane Waterproofing Coating
Product Overview

Railway Polyurethane Waterproof Coating is a two-component or single-component polymer waterproof coating made from isocyanates, polyether polyols, and other primary raw materials through chemical reactions. It is specifically designed to meet the waterproofing needs of railway projects and is widely used in waterproofing works for concrete structures such as railway bridges, tunnels, and platforms. This coating forms a continuous and dense elastic waterproof membrane on the concrete surface, effectively preventing rainwater, groundwater, and other elements from eroding railway structures, thereby ensuring the safety and longevity of railway projects.


High-Speed Railway Polyurethane Waterproof Coating Specifications:
Strength: 6.0 MPa
Components: A and B, with mixing ratios of 1:1 and 1:2.

Product Feature
Excellent Waterproof Performance: The waterproof membrane formed after curing exhibits extremely low permeability, effectively blocking moisture penetration. Even in long-term humid environments or under high water pressure, it maintains good waterproofing effectiveness.

High Elasticity and Crack Resistance: With high elasticity and elongation, it can adapt to the deformations caused by train loads and temperature changes in railway structures. Even if micro-cracks appear in the substrate, the waterproof membrane can stretch without cracking, ensuring that the waterproof function remains intact.

Good Adhesion Properties: It exhibits strong adhesion to various materials such as concrete and steel, allowing it to firmly attach to the substrate surface without easy detachment, thus forming a stable waterproof layer that effectively prevents water from seeping between the waterproof layer and the substrate.

Chemical Corrosion Resistance: It can resist the erosion of rainwater, snowmelt, de-icing salts, and other chemicals, maintaining stable performance even in harsh chemical environments, which extends the service life of the waterproof layer.

Strong Weather Resistance: It has excellent UV resistance and can withstand high and low temperatures, maintaining good physical properties in a temperature range of -40°C to +80°C. It is resistant to aging and cracking, making it suitable for railway projects in various regions and climatic conditions.

Good Environmental Performance: Made from environmentally friendly raw materials, it is non-toxic, odorless, and harmless to the environment and human health. It meets the environmental protection requirements of railway projects and does not produce harmful gases during construction, benefiting the health of construction personnel and environmental protection.

Convenient Construction: It can be applied using various methods, including spraying and troweling, making the operation simple and efficient. The fast curing speed allows for the formation of a waterproof layer in a short time, shortening the construction period without affecting the overall progress of the railway project.
Scope of Application
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