The invention relates to a waterproof bonding 
mortar. The waterproof bonding 
mortar is characterized by being prepared from the following raw materials by weight through mixing: 18 to 26 parts of hydrophobic 
fumed silica, 10 to 15 parts of 
calcium stearate, 6 to 12 parts of 
slag micropowder, 4.5 to 6.6 parts of 2-phosphonobutane-1,2,4-
tricarboxylic acid, 9 to 18 parts of 
zinc oxide powder, 20 to 30 parts of an AF-2 type 
superplasticizer, 5 to 10 parts of glass fibers, 10 to 15 parts of 
aluminum potassium sulfate, 5 to 10 parts of tallol oil-
asphalt sodium sulfonate, 8 to 16 parts of polymethyltriethoxysilane, 3 to 5 parts of 
calcium sorbate, 2.5 to 4.5 parts of dicyclohexyl amine 
nitrite, 3 to 5 parts of ethoxylated 
lanolin and 4 to 7 parts of an auxiliary agent. The waterproof bonding 
mortar provided by the invention has better 
frost resistance, 
carbonization resistance and 
wear resistance than other 
cement. Compared with traditional formulas, 
zinc oxide powder is added in the formulafor the waterproof bonding mortar; and during initial setting, the bonding mortar is neutralized by water and acidic and alkaline substances, so 
hydrogen and 
oxygen are gradually separated and becomegases that are discharged from the bonding mortar, and at the same time, a part of hydration heat is taken away, thereby reducing shrinkage cracks caused by temperature changes.