Hot Melt Epoxy Resin Adhesive E400 is a two-component elastic bonding agent that melts under heat for secondary curing, ensuring tight waterproof bonds between STC concrete and asphalt layers in steel bridge decks.
Summary Benefits at a Glance:
High Ductility & Flexibility: >400% elongation at 20°C for crack-resistant performance in variable temperatures.Waterproof & Corrosion Protection: Impermeable barrier prevents water erosion on steel structures.
Strong Adhesion: Bonding strength >5 MPa to STC, ideal for bridge pavement and repairs.
Easy Application with Secondary Curing: Melts during hot asphalt paving for embedded aggregate and enhanced durability.
Product Introduction
Hot Melt Epoxy Resin Adhesive E400 is a specialized two-component (resin and curing agent) bonding agent tailored for construction applications in highway bridges and steel structures. Unlike traditional epoxies, it undergoes initial room-temperature curing followed by heat-induced melting and secondary curing when hot asphalt is applied. This process allows large aggregate particles to embed into the molten layer under paving pressure, creating a highly elastic, waterproof bond between asphalt concrete and the bridge deck. Composed of modified epoxy resin, it excels in environments with thermal stress, offering excellent ductility, temperature resistance from -10°C to 60°C, and protection against moisture erosion. Perfect for new builds, repaving, or renovations, E400 ensures structural integrity and longevity in demanding infrastructure projects.
Product Parameters
| Parameter | Value/Description | Test Method/Notes |
| Mixing Ratio | Resin (A) : Curing Agent (B) = 100:90 by mass | Optimal for uniform blending |
| Surface Dry Time | 24 hours at 20°C | Ensures quick initial set |
| Full Curing Time | 6-10 days at 20°C | Allows for complete strength development |
| Bonding Strength (to STC) | >5 MPa at 20°C; >1.5 MPa at 60°C | ASTM D-4541/ACI-503R; Superior adhesion for waterproofing |
| Tensile Strength | >3 MPa at 20°C; >5 MPa at -10°C | ASTM D638-82; High performance in cold conditions |
| Elongation | >400% at 20°C; >250% at -10°C | ASTM D638-82; Excellent ductility for flexible bonding |
| Composite Shear Strength | 3.5 MPa at 20°C; 1.5 MPa at 60°C | JGJ/T 55-2011 & DB32/T 2285-2012 A10; Durable under shear stress |
| Composite Pull-Off Strength | 3.0 MPa at 20°C; 1.0 MPa at 60°C | JGJ/T 55-2011 & DB32/T 2285-2012 A11; Reliable pull resistance |
| Adhesion Pull-Off Strength | ≥2.5 MPa at 20°C; ≥1.0 MPa at 60°C | JGJ/T 55-2011 & DB32/T 2285-2012 A12; Strong interface bonding |
| Recommended Temperature | 5°C to 35°C for application | Avoids viscosity issues or rapid reaction |
Product Usage
Hot Melt Epoxy Resin Adhesive E400 is primarily used as a waterproof bonding layer in steel bridge deck systems for highway construction, repaving, and renovation projects. Follow these steps for optimal results:
Surface Preparation: Clean the substrate (e.g., STC concrete or steel) to remove oil, moisture, dust, and contaminants. If a corrosion layer exists, apply after it cures; otherwise, proceed within 4 hours post-sandblasting.
Mixing: Blend Component A (resin) and B (curing agent) at 100:90 mass ratio using a power mixer until uniform. Apply within pot life to avoid waste.
Application: Use manual scraping, rolling, or mechanical spraying for even coating (1-2 mm thickness). Apply in two layers to prevent defects. For slopes, touch up any flow issues. Protect areas from splatter and avoid wind >10 m/s.
Optional Enhancement: Broadcast compliant gravel on the uncured layer for better traction; remove loose particles after curing.
Curing & Integration: Allow initial curing at room temperature. During hot asphalt paving, the adhesive melts for secondary curing, embedding aggregates for a tight bond.
Post-Application: Provide sufficient curing time (6-10 days); test on-site before proceeding. Ideal for crack repairs, asphalt-concrete bonding, and preventing water erosion in bridges.
Finished product is AB two-component package, A component is 9kg/barrel, B component is 3kg/barrel; (special requirements can be customized)
Unopened products are stored in a dry and cool environment at 5~30℃, the shelf life of the product is 12 months.
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Our products have undergone rigorous testing at our national testing laboratory (CABR testing center co., ltd). Renowned Fortune Global 500 firms such as China Railway Group Limited, China Communications Construction Company Limited, and Sinohydro are among our esteemed clients.
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