International Reference:
Globally, the hybrid concrete wind tower design—combining precast concrete segments with steel sections—has become an essential technology for next-generation wind turbines. In these towers, segment bonding adhesives play a critical role in ensuring structural continuity and safety under high dynamic loads. International standards such as T/CECS 10080-2020 for “Epoxy Adhesives for Segmental Concrete Assembly” guide adhesive formulation and performance benchmarks. ZRETE’s adhesive system aligns with these global practices, providing solutions that meet or exceed industry requirements for strength, durability, and ease of construction.

Application Challenges:
Wind tower segment assembly faces demanding environmental and mechanical conditions. The adhesive must maintain high strength and elasticity to accommodate thermal expansion, vibration, and cyclic stress. On-site construction introduces variables like temperature, humidity, and vertical joint alignment, which require an adhesive with superior thixotropy (non-sag application) and long pot life for smooth placement. Waterproofing and corrosion resistance are also crucial since moisture infiltration at bonding joints can degrade performance over time. Additionally, the adhesive must bond firmly to both concrete and embedded steel components, ensuring monolithic behavior across the structure.

Product Performance:
ZRETE’s Wind Power Hybrid Tower Segment Epoxy Adhesive delivers outstanding mechanical and durability properties tailored for this application. The adhesive is a two-component modified epoxy resin system with high thixotropy and strong bonding capacity, specifically developed for post-tensioned, prestressed concrete tower assembly.

• Exceptional Strength: Compressive strength ≥80 MPa; shear bonding ≥17 MPa (concrete cohesive failure); tensile bonding ≥3.0 MPa.

• Durability: Resistant to water, freeze-thaw cycles, and chemical attack (acid, alkali, salt). Maintains integrity under long-term load and fatigue stress (≥2 million cycles without failure).

• Application Flexibility: Available in temperature-specific grades (FD-800/801/802/803) covering -15°C to +50°C, ensuring workability across various climates.

• Workability: High thixotropy prevents sagging in vertical seams; pot life >20 min and bonding time >60 min provide adequate working time.

• Corrosion Resistance: Adhesive forms a dense, impermeable bond line that prevents rebar corrosion and ensures waterproof sealing.

• Curing and Stability: Low shrinkage (<0.1%), high modulus (≥8000 MPa), excellent aging and creep resistance.

This adhesive ensures seamless force transfer between tower segments, enabling rapid installation and long-term structural safety. The product has been widely used in onshore hybrid tower projects where segment joints demand high-performance bonding under variable environmental conditions.

Product Matrix:
Wind Power Hybrid Tower Segment Epoxy Adhesive