The invention relates to an emulsified SBS
polymer modified
asphalt and preparation method thereof. At present, emulsification and emulsified modified
asphalt applied to surfacing is hard to produce and not stable in quality, high temperature
performance improvement is not obvious. The raw materials of the invention are matrix
asphalt, water, SBS asphalt modifier, compound asphalt emulsifier, emulsification stabilizer and
hydrochloric acid; firstly the matrix asphalt is heated, added with SBS asphalt modifier and then stirred to be swelled,
high speed grinding by
colloid grinder and full dispersion are carried out, and heat preservation growth is carried out to obtain SBS modified asphalt; compound asphalt emulsifier is added into water, emulsification stabilizer smoothened by water in advance is added, and appropriate
hydrochloric acid is added to adjust pH value, so as to obtain
liquid soap; and finally the SBS modified asphalt is subject to temperature reduction and then mixed with the
liquid soap and emulsification dispersion is carried out, thus obtaining emulsified SBS
polymer modified asphalt. The invention is applicable to coat tacking, coat sealing, surface treatment,
slurry sealing and
asphalt pavement recycling, asphalt wet-mixing of
road construction and cerement
asphalt mortar layer of passenger special line plate type unballasted track.