Railroad track bed using injection materials and method therefor

摘要

In a railroad track bed, an injection layer is formed between the railroad ties and the raodbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200 DEG C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30 kg/cm2 at a compressive strain rate at 40 DEG C. of 1.5% per minute.