Method for preventing deterioration of concrete pipe

Details Method for preventing deterioration of concrete pipe Method for preventing deterioration of concrete pipe

1989-11-20

1991-04-23

Pal, Asko

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2212, 134 2214, 134 24, 134 34, 134166C, 134166R, B08B 302

Patent

active

050097156

ABSTRACT:
A method and apparatus for cleansing the upper interior surfaces of a concrete sewer conduit, the apparatus including the concrete sewer pipe and a plurality of spray nozzles spaced apart and adapted to be introduced into and disposed in and along a length of concrete sewer to enable continuous or intermittent spraying of the upper interior surface or, alternatively, to be permanently mounted along the length of the concrete sewer conduit when newly constructed.

REFERENCES:
patent: 3535161 (1970-10-01), Gutrich
patent: 4508577 (1985-04-01), Conn et al.

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