SEBS/biochar compound modified asphalt and preparation method thereof
A technology of compound modified asphalt and modified asphalt, applied in building structures, building components, building thermal insulation materials, etc., can solve the problems of reducing the low-temperature cracking resistance of asphalt and the influence of the comprehensive performance of asphalt, so as to improve the low-temperature cracking resistance. , good low temperature crack resistance and high temperature stability, and the effect of improving high temperature stability
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Embodiment 1
[0031] A SEBS / biochar composite modified asphalt, including the following raw materials: 500g of SK90 base asphalt, YH-503SEBS accounting for 5% of the mass of SK90 base asphalt and DS-510F biochar accounting for 4% of the mass of SK90 base asphalt.
[0032] The preparation method of above-mentioned SEBS / biochar composite modified asphalt comprises the following preparation steps:
[0033] Step 1, heat the base asphalt in an oven at 160°C for 60 minutes to a molten state, add YH-503SEBS to the heated base asphalt, stir at 165°C for 12.5 minutes, and heat at a shear temperature of 170°C and a shear rate of 5000r Cut for 30 minutes under the condition of 1 / min, and then swell and develop in an oven at 170°C for 1 hour to obtain modified asphalt, which is ready for use;
[0034] Step 2: Dry the biochar in an oven at 120°C for 2 hours, put it in a drying container and cool it to room temperature, and obtain the cooled biochar for later use;
[0035] Step 3: Add the cooled biochar...
Embodiment 2
[0037] A SEBS / biochar composite modified asphalt, including the following raw materials: 500g of SK90 base asphalt, YH-503SEBS accounting for 5% of the mass of SK90 base asphalt and DS-510F biochar accounting for 8% of the mass of SK90 base asphalt.
[0038] The preparation method of above-mentioned SEBS / biochar composite modified asphalt comprises the following preparation steps:
[0039] Step 1, heat the base asphalt in an oven at 160°C for 60 minutes to a molten state, add YH-503SEBS to the heated base asphalt, stir at 165°C for 12.5 minutes, and heat at a shear temperature of 170°C and a shear rate of 5000r Cut for 30 minutes under the condition of 1 / min, and then swell and develop in an oven at 170°C for 1 hour to obtain modified asphalt, which is ready for use;
[0040] Step 2: Dry the biochar in an oven at 120°C for 2 hours, put it in a drying container and cool it to room temperature, and obtain the cooled biochar for later use;
[0041] Step 3: add the cooled biochar...
Embodiment 3
[0043] A SEBS / biochar composite modified asphalt, including the following raw materials: 500g of SK90 base asphalt, YH-503SEBS accounting for 5% of the mass of SK90 base asphalt and DS-510F biochar accounting for 12% of the mass of SK90 base asphalt.
[0044] The preparation method of above-mentioned SEBS / biochar composite modified asphalt comprises the following preparation steps:
[0045] Step 1: Heat the base asphalt in an oven at 160°C for 60 minutes to a molten state, add YH-503SEBS to the heated base asphalt, stir at 165°C for 12.5 minutes, and when the shear temperature is 170°C and the shear rate is Cut at 5000r / min for 30min, and then swell and develop in an oven at 170°C for 1h to obtain modified asphalt for later use;
[0046] Step 2: Dry the biochar in an oven at 120°C for 2 hours, put it in a drying container and cool it to room temperature, and obtain the cooled biochar for later use;
[0047] Step 3: Add the cooled biochar into the modified asphalt in 6 times w...
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