Concrete sleepers type F27 - observations on sleepers made at Quedgeley in the period 1973 to 1982 (TM-CES-115)

A length of F27 concrete sleepers manufactured by Dow-Mac at Quedgeley was laid in the up fast West Coast Main Line near Tring, between the 30 and 31 mileposts, in 1978. They replaced F10 (BJB) sleepers which were laid about 1960. In 1981, after only three years service, deterioration was...