Two-stage modification device and method for high-hydrophobicity asphalt concrete acidic aggregate
A technology of asphalt concrete and high hydrophobicity, which is applied in the field of two-stage modification of acidic aggregate of highly hydrophobic asphalt concrete and the field of two-stage modification of acidic aggregate of highly hydrophobic asphalt concrete, which can solve the problem of high cost of asphalt concrete, etc. problems, to achieve the effects of enhanced adhesion, huge economic benefits, and cost savings
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Embodiment 1
[0037] The granite crushed stone used in the asphalt concrete core wall of a pumped storage power station in Xinjiang is used as the acid aggregate, and the asphalt is Karamay 90#A grade asphalt;
[0038] The acid aggregate is processed according to the following process: the acid aggregate with a particle size of 10 to 20 mm is placed in a drying device for drying treatment, the temperature is controlled at 100 to 130 ° C, and the time is 120 minutes to obtain pretreated acid aggregate. ;
[0039] The pretreated acid aggregate is placed on the upper main conveyor belt 10, the first silane emulsion container 1 is filled with silane emulsion 2, the first papermaking sludge container 7 is filled with papermaking sludge ash 8, and the upper main conveyor belt 10, The valve 3 on the first silane emulsion container 1 and the valve 3 on the first papermaking sludge container 7, the acidic aggregate is wetted by the silane emulsion 2, and then wrapped by the papermaking sludge ash 8 ...
Embodiment 2
[0043] The difference from implementation 1 is that the conveying speed of the lower sub-conveyor belt 11 increases uniformly from 2m / s to 3m / s, and when it reaches 3m / s, it decreases uniformly from 3m / s to 2m / s, and so on and so forth. , the completion time of each increment and each decrease is 10s, and the sprinkling rate of the first silane emulsion container 1, the first papermaking sludge container 7, the second papermaking sludge container 17, and the second silane emulsion container 14 is 4m / s.
[0044] The adhesion between the acidic aggregate and asphalt was tested according to the Aggregate-Asphalt Adhesion Test (Boiled Method) in "Test Regulations for Hydraulic Asphalt Concrete" (DL / T5362-2009). According to the "Test Regulations for Hydraulic Asphalt Concrete" (DL / T5362-2009), the adhesion between acid aggregate and asphalt is evaluated. 1 level.
Embodiment 3
[0046] The difference from implementation 1 is that the conveying speed of the lower sub-conveyor belt 11 increases uniformly from 3m / s to 4m / s, and when it reaches 4m / s, it decreases uniformly from 4m / s to 3m / s, and so on and so forth. , the completion time of each increment and each decrease is 10s, and the sprinkling rate of the first silane emulsion container 1, the first papermaking sludge container 7, the second papermaking sludge container 17, and the second silane emulsion container 14 is 6m / s.
[0047] The adhesion between the acidic aggregate and asphalt was tested according to the Aggregate-Asphalt Adhesion Test (Boiled Method) in "Test Regulations for Hydraulic Asphalt Concrete" (DL / T5362-2009). According to the "Test Regulations for Hydraulic Asphalt Concrete" (DL / T5362-2009), the adhesion between acid aggregate and asphalt is evaluated. 1 level.
[0048] The results of the boiling method test the adhesion grades of aggregate and asphalt under different embodim...
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