It is mainly used for surface treatment of concrete base, aerated brick, fly ash brick, clay perlite brick and other walls or old ceramic tiles, which can enhance the adhesion of cement mortar to the base and prevent the plastering layer from hollowing and falling off, thus replacing manual roughening treatment.
characteristics of dry powder interface agent
1. The dry polymer mixture is prefabricated in the factory and can be used by adding water on site, which is quick and convenient.
2. It is made of imported chemical raw materials, high-quality high-grade cement, quartz sand with reasonable gradation, etc., and it avoids the quality defects caused by various uncertain factors in the traditional construction process of "cement+river sand+interfacial agent glue".
3. It is non-toxic, tasteless, radiation-free and pollution-free, and meets the requirements of environmental protection; Non-flammable and non-explosive, and can be stored and transported as general goods; Avoid the dust of on-site batching, which is beneficial to protect the atmospheric environment.
4. It has excellent water resistance, damp heat resistance and freeze-thaw resistance, and can be used in damp occasions. At the same time, it is non-combustible at the high temperature of +15℃.
formula of dry powder interface agent
1, cement P.O. 42.5r: 35-5
2, sand with more than 1 meshes (usually 4-1): 58-4
3, latex powder: 3-2
4, cellulose ether. Optimizing formula
calcium formate: improving early strength in winter
starch ether: improving workability
application method of dry powder interface agent
1. Treatment of base course
The surface of base course must be clean, free of floating ash and oil stains, and the loose part must be removed. For the base course with strong water absorption, it should be wetted with water.
2. Prepare
According to the ratio of interfacial agent: water = 1: 3, stir it into slurry, and let it stand for 5-1 minutes before use.
3. Construction by napping method
Slurry will be brushed on concrete or other base with brushes, brooms and other tools, and the rough surface of Mao Cheng will be plastered by the traditional method after it is dried and hardened. The reference dosage is about 1-2kg/_.
note: the service time of the prepared mortar is about 1 hour. If it thickens slightly, a small amount of water can be added to dilute it.
4. packaging and storage of dry powder interface agent
packaging is 5kg±1kg bag.
it must not be affected with moisture during storage, and the shelf life in dry state is 6 months.