Negative thermal expansion modified asphalt caulking material
A technology of negative expansion material and modified asphalt, applied in the field of pavement material engineering, can solve the problems of mechanical damage, mutual separation, construction difficulties and so on
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Embodiment 1
[0036] Taking the preparation of negative expansion modified asphalt joint filling material 100Kg as an example, the mass ratio of raw materials used is as follows:
[0037] SBS modified asphalt 55Kg
[0039] Sodium zirconium phosphate 4Kg
[0041] Polyoxypropylene polyoxyethylene copolymer 2Kg
[0042] The preparation method is as follows:
[0043] First, weigh 2Kg of polyoxypropylene-polyoxyethylene copolymer, 7Kg of zinc cyanide, and 4Kg of sodium zirconium phosphate, add 5Kg of alcohol to submerge the solids, heat the mixture and keep it at a temperature of 60°C, and stir for 15 minutes in a small cement mixing pot , after the alcohol is completely volatilized, grind it through a small cement mill for 10 minutes, and store the ground powder for later use;
[0044] Heat 55Kg of SBS modified asphalt to a molten state, then add the ground powder, and use a high-speed shearer to shear at a speed of 2000 rpm for 13 min...
Embodiment 2
[0047] Taking the preparation of negative expansion modified asphalt joint filling material 100Kg as an example, the mass ratio of raw materials used is as follows:
[0048] SBS modified asphalt 55Kg
[0049] Zinc cyanide 7Kg
[0050] Sodium zirconium phosphate 4Kg
[0051] Calcium powder 32Kg
[0052] Sodium polyacrylate 2Kg.
Embodiment 3
[0054] Taking the preparation of negative expansion modified asphalt joint filling material 100Kg as an example, the mass ratio of raw materials used is as follows:
[0055] SBS modified asphalt 45Kg
[0056] Zinc cyanide 10Kg
[0057] Sodium zirconium phosphate 4Kg
[0058] Calcium powder 38Kg
[0059] Polyoxypropylene polyoxyethylene copolymer 3Kg.
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