| 摘要 |
PROBLEM TO BE SOLVED: To simplify execution and, at the same time, to promote waterproof efficiency by spreading bituminous material and fiber material to level after primer is applied on a floor slab such as highway bridge, and impregnating the fiber material with bituminous material. SOLUTION: Primer such as asphalt rubber mixed solvent type adhesive, etc., is applied on an RC concrete floor slab such as highway bridge. Then, an operation car 1 is moved and, at the same time, bituminous material such as reforming asphalt composition adding rubber to ethylene-ethyl acrylate copolymer is injected to the floor slab 17 from front and rear nozzles 7A and 7B through a conveying pipe 5, front and rear spray bars 6A and 6B from a retaining warmth tank 2. Then, fiber material 13 of synthetic fiber such as polyester fiber, etc., stored in a fiber material storage device 12 is injected to the floor slab 17 through a fiber material injection nozzle 16. The fiber material 13 is infiltrated and mixed with the bituminous material to form a waterproofing layer on the floor slab 17. By the constitution, execution can be simply carried out and, at the same time., waterproof efficiency can be promoted. |
