| abstract |
The present invention relates to a cementitious mortar composition comprising 8 to 35 wt% of a fast cement type binder, 20 to 65 wt% of fine aggregate, 20 to 70 wt% of coarse aggregate, 0.1 to 20 wt% of water and 0.01 to 20 wt% The system modifying agent is selected from the group consisting of 75-99 wt% styrene-acrylic emulsion, 0.01-15 wt% polymethyl methacrylate, 0.01-15 wt% polybutadiene, 0.01-15 wt% methyl methacrylate butadiene, 0.01-15 wt% The present invention relates to a polymer modified cementitious cement concrete composition and a maintenance method for a concrete structure using the same. According to the present invention, it is possible to improve the workability of the concrete by adding a polymer modifier mixed with styrene-acrylic emulsion, polymethyl methacrylate, polybutadiene, methyl methacrylate butadiene and vinyl toluene, And can reduce defects of concrete by improving bending strength, tensile strength, initial strength, long-term strength, salt resistance and freeze-thaw resistance, in particular. |