Method of applying quick setting spray materials

Details Method of applying quick setting spray materials Method of applying quick setting spray materials

1991-06-20

1993-09-21

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Processes

239429, 239433, 239 10, 366 3, 366 10, B05B 704

Patent

active

052461637

ABSTRACT:
A method of applying a quick setting spray material is disclosed, wherein a cement-containing principal composition is supplied into a feed pipe and sprayed through a nozzle and an aqueous solution of a (meth)acrylate as a set accelerating agent is supplied into the principal composition at a linear speed of 0.5 to 50 m/sec through at least two supply pipes that are connected to the feed pipe in a position within one meter behind the tip of the nozzle in such a manner that extended axes of the supply pipes cross each other within the feed pipe and wherein the at least two supply pipes form a supply angle of 30 to 90 degrees with respect to the direction at which the principal composition flows, whereafter the principal composition and the set accelerating agent are jetted from the nozzle.

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ACI Journal, No. 3, pp. 39-42, Oct. 1990.
Guideline on Shotcrete, Osterreichischer Betonverein, Jan. 1990.

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