Regeneration process of waste asphalt micro powder

[0051] Preparation of concrete admixtures

[0052] The chemical structural formula of monomer (I) is:

[0053]

[0054] where R 1 is methyl, R 2 is an ethyl group, n is 5, and this monomer can be prepared by esterifying polyethylene glycol and methacrylic acid according to a conventional esterification method, and then reacting the esterification product with ethoxychloride according to a conventional elimination reaction, or it can be Commercially purchased directly from Sigma-Aldrich;

[0055] The chemical structural formula of monomer (II) is:

[0056] This monomer is also commercially available from Sigma-Aldrich;

[0057] Adopt emulsion polymerization method, add 80g monomer (I) and 12g monomer (II) and 200mL deionized water in the 500mL round-bottomed flask that has mechanical stirring device, nitrogen is led under stirring, then add 0.1g ammonium persulfate as The initiator is heated up to the polymerization temperature, the polymerization temperature is 80°C,...

[0059] Use the W2000 milling machine to mill the asphalt concrete pavement of the high-grade highway in Fangzhuo section. The thickness of the first layer of milling is 5cm, and the thickness of the second layer of milling is 50cm; the first layer of milling material is screened , collect the granules of 10-31.5mm, crush the granules larger than 31.5mm and sieve again to obtain the granules of 10-31.5mm, which are recorded as granules A; The hydroisomerized residual oil (from Yanshan Petrochemical) was mixed in a weight ratio of 90:5:5, stirred evenly, then left to stand for 10 days, and then pulverized to obtain waste asphalt powder, which was recorded as the first waste asphalt powder , the particles smaller than 10mm are collected for later use, and the particles are recorded as particle B; wherein, the hydrotreated residue is obtained by hydroisomerization in the presence of a Pt-Mg / SAPO-11 hydroisomerization catalyst For oil, the hydrogenation treatment conditions are a t...