Railways: surface track – Roadbed
Patent
1977-05-24
1979-05-29
Reese, Randolph A.
Railways: surface track
Roadbed
106273R, 404 75, E01B 100
Patent
active
041564405
ABSTRACT:
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.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30 kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.
REFERENCES:
patent: 676129 (1901-06-01), Goldie
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patent: 3859238 (1975-01-01), Kremser et al.
patent: 3869417 (1975-03-01), Ramsay
patent: 3878987 (1975-04-01), Uzuka
patent: 4028293 (1977-06-01), VAN DEN Berg
Hayashi Shigeyuki
Kakegawa Hideo
Katoh Yasuo
Yamashita Tadakazu
Japanese National Railways
Nippon Oil Company Ltd.
Reese Randolph A.
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