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Project of Xi'an Metro Line 2

Strict Engineering Challenges

As a backbone line of the city, Xi'an Metro Line 2 faces frequent vibration of track gaps, extreme temperature differences (-10°C to 40°C), and long-term waterproof sealing requirements. Traditional filling materials are prone to aging and cracking, leading to a sharp increase in maintenance costs.

Innovative Sealing Solution

• Juhuan Nest Foam Adhesive System

• Utilizing European pre-expansion technology, it expands 80% immediately after spraying, quickly filling the rail joint gaps with an accuracy of ±0.5mm, eliminating the risk of thermal expansion and contraction. With a closed-cell rate exceeding 95% and an elastic compressive strength maintained at 3.2 MPa, it provides a flexible buffer layer for a 60,000-ton rail network, reducing vibration transmission by 60%.

• Adaptabilitas ad temperaturas ultraminutas: tempus indurandi ≤ 45 minuta ad -30℃, continuitatem constructionis hibernae pollicetur.