Asphalt pavement flame-retardant and smoke-suppression agent and preparation method thereof

The invention discloses an asphalt pavement flame-retardant and smoke-suppression agent and a preparation method thereof. The flame-retardant and smoke-suppression agent disclosed by the invention takes very good flame-retardant and smoke-suppression effects in the burning process under the combined action of nanoscale water magnesium powder, nanoscale boehmite powder, raw vermiculite powder and graphene, so that flammability of asphalt can be effectively reduced, and use safety and construction safety of an asphalt pavement are improved; the flame-retardant and smoke-suppression agent is mainly formed by grinding natural minerals, is phosphate-free and halogen-free, has no any adverse effect on the environment, and has obvious environmental-friendly benefits. 本发明公开了种沥青路面阻燃抑烟剂及其制备方法，本发明的阻燃抑烟剂在燃烧过程中通过纳米级水镁石粉和纳米级勃姆石粉与生蛭石粉和石墨烯的共同作用，起到了非常好的阻燃抑烟作用，可有效减低沥青的可燃性，提高沥青路面的使用安全和施工安全；阻燃抑烟剂主要由天然矿物研磨而成，无磷、无卤，对环境无任何不利影响，具有显著的环保效益。