The invention discloses a modified
asphalt waterproof
coating, a preparation method for the modified
asphalt waterproof
coating and a use method thereof and relates to the field of building materials. The problems of sound insulation and
noise reduction of the waterproof
coating film can be solved. The preparation method for the modified
asphalt waterproof coating disclosed by the invention comprises the following steps: preparing the modified asphalt waterproof coating from a component A and a component B; mixing and uniformly stirring anion emulsified asphalt,
polymer emulsion and
slurry, thereby acquiring the component A; and uniformly mixing water with curing agent, thereby acquiring the component B, wherein the
slurry is prepared according to the following steps: adding water, stabilizer, dispersing agent,
wetting agent, de-
foaming agent,
fine powder and pH
regulator into a dispersing device, dispersing for the first time, adding a silencing filling material soaked with a
silane coupling agent solution after ending the dispersing for the first time, and then adding a
thickening agent, dispersing for the second time and then ending the dispersing for the second time, thereby acquiring the
slurry. The modified asphalt waterproof coating disclosed by the invention has excellent effects of sound insulation and
noise reduction on the basis of excellent waterproof property.