| abstract |
The present invention relates to a method for seismic retrofitting of a concrete structure using an earthquake-resistant mortar and an earthquake-resistant mortar reinforced with an environmentally friendly basalt fiber. The method comprises the steps of treating the surface of a concrete structure, removing high pressure water and dust, , And then a primer is applied to the surface of the concrete structure in which the above-mentioned seismic strength reinforcing member is installed. Then, 30 to 35 wt% of berylite-containing CSA cement, 55 to 62 wt% of aggregate, 2 to 4 wt% of silica fume, By applying an earthquake-resistant mortar composition comprising 4 to 6% by weight of an acid resin, 0.2% by weight of a Vasartel fiber, and other additives selected from the group consisting of a defoaming agent, a thickening stabilizer and a shrinkage reducing agent to the primer layer It is excellent in bending strength and bond strength and can be used for construction of walls, slabs, girders, bridges, In addition to being strong in earthquake resistance, it has excellent workability and durability as well as low production cost. It can improve the low tensile strength and compressive strength of conventional concrete, prevent corrosion of reinforcing steel due to leakage, protect structure It is possible to minimize damage to property and human life when an earthquake occurs. |