| abstract |
An object of the present invention is to provide an existing concrete floor slab that does not generate a wide crack that affects durability even if it is constructed with a thin layer, and that a desired strength can be obtained within a few hours. A method for repairing road slabs that can be strengthened is provided. A resin material 2 is applied to an existing concrete floor slab 1 and then an aggregate 3 is dispersed from the top to form an unevenness for ensuring adhesion, cement, rapid hardening material, lithium carbonate, setting retarder, One P-axis short fiber having a fiber diameter of 0.05 mm or less, a fiber length of 5 to 20 mm, and a fiber tensile strength of 1500 to 2400 MPa with respect to a mortar containing a fluidizing agent, a nitrogen gas foaming substance and a thickener. Construction is carried out so as to pour rapid hardening high-toughness FRC material 4 blended with ˜5%. [Selection] Figure 1 |