METHOD OF SPRAY CONSTRUCTION FOR CONCRETE AND KYAKUDO MATERIAL OR THE LIKE (EARTH BROUGHT FROM ANOTHER PLACE AND MIXED IN SOIL)

摘要

PURPOSE:To perform a spray without a trouble even through a long hose by force-feeding a spray material of different proportion, relating to standard blending, from wet and dry spraying machines to be united in a joining valve and mixing the material in the standard blending in a process of reaching a nozzle. CONSTITUTION:A wet spraying machine 1 and a joining valve 5, provided between 5 to 20m before a nozzle 3 of a force-feeding hose 4 for force feeding a material from a dry spraying machine 2, are provided. A spray material of kneaded object such as cement, sand, ballast, etc. with a proportion 1/2 to 3/4 times the standard blending and a spray material with a proportion 1/2 to 1/4 times the standard blending are force-fed respectively from the wet spraying machine 1 and the dry spraying machine 2, and both the spray materials are combined in the joining valve 5. Further the materials are mixed n the standard blending in a process of reaching the nozzle 3, delivered therefrom and sprayed. In this way, a finish quality can be ensured while making spraying work possible also without trouble in a press feed even when length of the hose for spraying is increased.