Overview
Challenges in Reducing Railway Noise
Passenger & Resident Impact
– High-speed train noise causes discomfort & health risksSlab Track Vulnerability
– Concrete slab tracks intensify noise, worsening the issueUrgent Need for Noise Reduction Technology
– Effective solutions are requiredMaterial Limitations
– Organic absorbers: poor flame resistance & durability
– Foamed aluminum: high economic cost
– Inorganic lightweight foams: limited absorption & strength, impractical for application