Method for rapidly measuring content of effective crumb rubber in crumb rubber modified asphalt
A modified asphalt, rapid measurement technology, applied in the direction of removing certain components and weighing, etc., can solve the problem of inability to effectively determine the effective rubber powder content of rubber powder modified asphalt, shorten the dissolution time, improve the filtration speed, The effect of improving accuracy
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Embodiment 1
[0091] Select 20% rubber powder-modified asphalt, of which the viscosity at 180°C is 2.4Pa·S, the penetration is 48 (0.1mm), the softening point is 71.5°C, and the ductility at 5°C is 13cm; among them, 20% rubber powder is mixed in The raw materials in the modified asphalt are 100 parts by mass of asphalt, 25 parts of rubber powder, 0.25 parts of epoxy fatty acid methyl ester, 2 parts of reinforcing agent phenolic resin, and 0.5 parts of crosslinking agent sulfur.
[0092] The method for quickly measuring the effective rubber powder content of rubber powder modified asphalt in this embodiment is as follows:
[0093] Step 1. Put the 100mL round-bottom flask, glass rod, and 100mm-diameter Buchner funnel used in the test into an oven at 105°C to dry for 15 minutes, then transfer to a desiccator to cool for 30 minutes, and weigh the mass m1 of the round-bottom flask to be 95.474 g, taking the glass rod quality m2 is 14.271g, and taking the Buchner funnel quality m3 is 273.285g;
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Embodiment 2
[0115] Select 25% rubber powder-modified asphalt, which has a viscosity of 3.1Pa·S at 180°C, a penetration of 64 (0.1mm), a softening point of 73.0°C, and a ductility of 14cm at 5°C; 25% rubber powder is mixed in it The raw materials in the modified asphalt are 100 parts by mass of asphalt, 34 parts of rubber powder, 0.25 parts of epoxy fatty acid methyl ester, 0.1 part of activator 980, 2 parts of reinforcing resin, and 0.5 parts of crosslinking agent sulfur share.
[0116] The method for quickly measuring the effective rubber powder content of rubber powder modified asphalt in this embodiment is as follows:
[0117] Step 1. Put the 100mL round-bottom flask, glass rod, and 100mm diameter Buchner funnel used in the test into an oven at 105°C to dry for 15 minutes, then transfer it to a desiccator to cool for 30 minutes, and weigh the mass m1 of the round-bottom flask to be 95.480 g, taking the glass rod quality m2 is 14.273g, and taking the Buchner funnel quality m3 is 273.28...
Embodiment 3
[0140] Select 30% rubber powder-modified asphalt, of which the viscosity at 180°C is 3.2Pa·S, the penetration is 56 (0.1mm), the softening point is 71.5°C, and the ductility at 5°C is 17cm; among them, 30% rubber powder is mixed in The raw materials in the modified asphalt are 100 parts by mass ratio of asphalt, 43 parts of rubber powder, 0.25 parts of epoxy fatty acid methyl ester, 0.14 parts of activator 980, 3 parts of reinforcing phenolic resin, and 0.5 parts of crosslinking agent sulfur .
[0141] The method for quickly measuring the effective rubber powder content of rubber powder modified asphalt in this embodiment is as follows:
[0142] Step 1. Put the 100mL round-bottom flask, glass rod, and 100mm-diameter Buchner funnel used in the test into an oven at 105°C to dry for 15 minutes, and then transfer it to a desiccator to cool for 30 minutes. Weigh the mass m1 of the round-bottom flask to be 95.467 g, taking the glass rod quality m2 is 14.276g, and taking the Buchner...
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