The invention belongs to the field of
road construction materials, in particular relates to a modified natural
zeolite warm mixing agent and a preparation method of the modified natural
zeolite warm mixing agent. The modified natural
zeolite warm mixing agent is prepared by carrying out alkaline
solution treatment and
fatty amine modification on natural zeolite. According to the modified natural zeolite warm mixing agent disclosed by the invention, the
water content of the modified natural zeolite warm mixing agent is higher, so that the mixing and paving temperature of an
asphalt mixture can be effectively reduced; a non-polar group of
fatty amine in the modified natural zeolite warm mixing agent has very strong affinity with
asphalt, and a polar group has very strong affinity with aggregate surfaces (particularly, acidic aggregates such as
basalt), so that the interfacial free energy of the aggregates and the
asphalt can be effectively reduced, the adhesion of the asphalt and the aggregates is improved, the water stability of the asphalt mixture is increased, and a
water damage phenomenon of an
asphalt pavement is effectively prevented from happening; raw materials of the modified natural zeolite warm mixing agent prepared by the invention are easy to obtain and low in cost, and the modified natural zeolite warm mixing agent is capable of obviously reducing the cost of a warm mixing asphalt mixture, and is beneficial for being widely applied.