Use ordinary Portland cement and add some quick-setting and quick-setting cement to adjust the setting time. The difficulty is that the surface processing must be performed.
The following is a basic repair mortar formula used in Guangdong, China and Hong Kong, China:
Cement: 150
Fast-setting fast-hardening cement: 160kg
Coarse sand: 500kg
Medium sand: 150kg
Concrete expansion agent: 10kg
Hemihydrate gypsum: 20kg
Water reducing agent: 2.5 F10
Rubber powder: 8kg
Lithium carbonate: adjust the time
Defoamer: 0.5kg
The above formula is not complicated, the key is the supporting construction technology and method.
FAQ about the Quick Repair Mortar Formula
Q: This seems complicated?
A: This is not complicated at all, basically the additives are not used much, simple and practical.
Q: What is the approximate mesh size for coarse sand and medium sand?
A: According to different needs, the road surface repair will be coarser. Generally, the coarse sand in the factory is 30-50 mesh, the coarser is 15-30 mesh, and the coarser is used in the grout.
Q: What does " Lithium carbonate: adjust the time" mean?
A: Adjusting the time means adjusting the condensation time.
Q: Generally speaking, what is the thickness of the repair mortar?
A: Repair mortar usually does not emphasize the amount of use, you need to check the specific repair plan. Repair mortar requires a plan that can be combined with your actual situation. The thinnest repair mortar thickness also needs 2~3mm, too thin will not work.
Q：If you want to produce repair mortar yourself? What needs to be done?
A：Di Hai Machinery is a manufacturer specializing in the production of various dry mortar plant, supporting 1-50t/h dry mortar production line. If you want to know more about the repair mortar production line, please contact us, our engineers will give you detailed drawings and turnkey solution.