Compound modified asphalt and preparation method thereof
A technology of compound modified asphalt and asphalt, which is applied in building components, building insulation materials, buildings, etc., to achieve the effect of shortening the preparation period, long service life and good high temperature stability
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[0015] Example 1:
[0016] A composite modified asphalt, which is made of the following raw materials in parts by weight: 100 parts of asphalt, 10 parts of SBS, 4 parts of rubber powder, 4 parts of furfural extraction oil, 3 parts of activator, 3 parts of stabilizer Copies.
[0017] A preparation method of composite modified asphalt includes the following steps:
[0018] (1) Heat a part of the asphalt to 130°C, and then add 2% of SBS and a predetermined amount of furfural extraction oil to the hot asphalt for shear dispersion;
[0019] (2) Add 15% rubber powder and a predetermined amount of activator to another part of asphalt, and swell at a temperature of 180°C for 100 minutes;
[0020] (3) Disperse the pre-dispersed SBS and swollen rubber powder at high speed at 180℃ for 65min;
[0021] (4) Add stabilizer and develop at low speed for 35 min.
[0022] Based on the above, the present invention is prepared with materials such as asphalt, SBS, rubber powder, furfural extract oil, etc., by...
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