Pavement joint filling asphalt material and its preparation method and application
A technology for asphalt material and road petroleum asphalt, which is applied in the field of pavement joint filling asphalt material and its preparation, can solve the problems of poor quality joint filling material failing to meet road performance requirements, being unable to withstand severe cold and low temperature freezing cracking tests, and wasting money. , to achieve the effect of easy operation, saving construction costs and prolonging road life
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[0034] The preparation method of above-mentioned pavement filling asphalt material, comprises the following steps:
[0035] (1) take petroleum asphalt, SBS, rubber powder, compatible stabilizer, asphalt additive and filler by weight;
[0036] (2) Preheat the petroleum asphalt to 180-200°C;
[0037] (3) Put the preheated petroleum asphalt into the premixing tank under the continuous stirring state, and then put the asphalt additive into the premixing tank under the continuous stirring state, and then put SBS and phase into the premixing tank in sequence Soluble type stabilizer, obtain blend;
[0038] (4) Then send the blend into the colloid mill, and the gap between the colloid mill is generally adjusted to 0.2-0.25mm. After grinding, put it into the finished product tank, stir until uniform, and then put rubber powder and filler into the finished product tank in turn, and continue After stirring and reacting for 4-6 hours, it is cooled to obtain the asphalt material for fill...
Embodiment 1
[0043] Pavement filling asphalt, which consists of: 70 parts by weight of 70# petroleum asphalt, 7 parts by weight of SBS, 8 parts by weight of asphalt additive (aromatic content 85%), waste tire rubber powder (60 mesh) of 10 parts by weight, 5 parts by weight of calcium carbonate powder (200 mesh), 0.3 parts by weight of compatible stabilizer (organic solvent content 40%).
[0044] The preparation method and steps of the above-mentioned pavement joint filling asphalt material:
[0045] (1) After weighing the above-mentioned raw materials according to the composition and parts by weight, pass the petroleum asphalt and the asphalt additive through the heat exchange device, and preheat to 180-200°C;
[0046] (2) Put the preheated petroleum asphalt into the premixing tank under the continuous stirring state (300-800 rpm), and then put the asphalt additive into the premixing tank under the continuous stirring state, and then Put SBS and compatible stabilizer into the premixing ta...
Embodiment 2
[0053] Pavement filling asphalt, it consists of: 90# petroleum asphalt of 55 parts by weight, SBS of 10 parts by weight, asphalt additive (aromatic hydrocarbon content 90%) of 30 parts by weight, waste tire rubber powder (80 orders) of 15 parts by weight and 0.25 parts by weight of compatible stabilizer (organic solvent content 50%).
[0054] The preparation method and steps of the above-mentioned pavement joint filling asphalt material:
[0055] (1) After weighing the above-mentioned raw materials according to the composition and parts by weight, pass the petroleum asphalt and the asphalt additive through the heat exchange device, and preheat to 180-200°C;
[0056] (2) Put the preheated petroleum asphalt into the premixing tank under the continuous stirring state (300-800 rpm), and then put the asphalt additive into the premixing tank under the continuous stirring state, and then Put SBS and compatible stabilizer into the premixing tank in turn to obtain the blend;
[0057]...
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