Polymer cement-based waterproof coating is a two-component composite waterproof coating. As for composite waterproof coating, no single emulsion or inorganic powder can bring better performance than multiple emulsions or powders. Two kinds of acrylate emulsions with different properties were blended, and a waterproof coating with excellent performance was prepared by using the synergistic effect of the two emulsions. The general application is the combination of different varieties of acrylate emulsion, acrylate emulsion and vinyl acetate ethylene copolymer emulsion, acrylate and waterborne polyurethane emulsion, etc. Due to the different properties of each emulsion, it is possible to select the appropriate emulsion ratio and the ratio of emulsion and cement according to the application conditions in different regions. Through the compounding method, the synergistic effect of emulsion can be brought into play to achieve the best performance of polymer cement waterproof coating. Because China has a large geographical area and the climate difference between the north and the south is also great, so the unified formula can not adapt to the differences caused by the climate difference between the north and the south. For the south, more requirements are for water resistance, while for the north, more requirements are for cold resistance, that is, the minimum film forming temperature and glass transition temperature, to meet the needs of construction under cold conditions in the north. Similarly, the composite of powder can also achieve the purpose of improving the performance, and the performance of polymer cement-based waterproof coatings prepared by different types of cement and emulsion is also different.

The construction of polymer cement-based waterproof coating is site proportioning, and how much is used. The on-site construction method has a direct impact on the final performance of the coating, and the correct construction method is an essential means to prepare waterproof coating. For the same formula of polymer cement waterproof coating, different coating layers were used, and the tensile strength of untreated samples coated for three times was 10% -20% higher than that of the samples coated for two times, and the fracture elongation of untreated samples coated for three times was 8% -19% higher than that of the samples coated for two times. It can be seen that the correct construction method can improve the performance of polymer cement waterproof coating.