The invention belongs to the technical field of light building materials, and particularly relates to a preparation method of normal-temperature mixed
asphalt concrete. The preparation method of the normal-temperature mixed
asphalt concrete comprises the following steps: uniformly mixing 90-100 parts by weight of aggregate, 10-20 parts by weight of limestone mineral
powder and 6-12 parts by weight of a
fiber material at
room temperature, then adding 2-4 parts by weight of a polycarboxylic
acid water reducer and 1-5 parts by weight of water, stirring for 20-30 minutes, then adding 20-30 parts by weight of carboxylated cationic emulsified
asphalt, and stirring at normal temperature to obtain a mixture; and pouring the mixture to obtain the normal-temperature mixed
asphalt concrete. According to the invention, the dynamic stability is effectively improved while good splitting strength is ensured, and the method can be applied to light building materials.