High-efficiency cold replenishing liquid for asphalt
A technology of cold rehydration and asphalt, applied in building components, building insulation materials, construction and other directions, can solve the problems of inability to rapidly increase the strength, low initial strength, falling off, etc., to improve the internal fit effect, increase the specific surface area, and not easy to separate. Effect
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preparation example Construction
[0033] The preparation method of compound cold-patch base material comprises the steps:
[0034] (1) At 35~55°C, take isophorone diisocyanate and amine reagent and mix and stir for 30~50min according to the mass ratio of 10:4~7 to obtain a mixture, and take the mixture according to the mass ratio of 1:0.5:3~6 Add additives and petroleum ether to mix, move to an ultrasonic oscillator, ultrasonically disperse at a frequency of 50~65kHz for 20~40min, then move to a centrifuge, centrifuge at 3000~5000r / min for 6~10min, collect the centrifuge and freeze and crush at -10°C Machine pulverized through a 120 mesh sieve, collect the sieved particles according to the mass ratio of 8~12:2~4:1, add calcium silicate, thickener and mix in the ball mill tank, add zirconia ball mill according to the mass ratio of ball to material 20~30:1 Beads are ball milled at 350~550r / min for 2~4h to obtain ball abrasives;
[0035](2) According to the mass ratio of 3~7:1, take bamboo shoots and straws and ...
Embodiment 1
[0039] Additives: Mix methyl silicone oil, boron nitride, bamboo fiber passed through a 120-mesh sieve, and absolute ethanol in a mortar at a mass ratio of 3:1:3:0.5, and grind at 250r / min for 2 hours to obtain the additive.
[0040] Amine reagent: Mix ethylenediamine and cyclohexylamine at a mass ratio of 5:1 to obtain an amine reagent.
[0041] Thickener: Mix polyacrylamide, hydroxymethyl cellulose, and guar gum at a mass ratio of 5:1:1 to obtain a thickener.
[0042] Reagent: Mix citric acid solution with a mass fraction of 15% and gallic acid at a mass ratio of 7:5 to obtain a reagent.
[0043] Pretreatment of weathered coal: Take the weathered coal and add 15% tartaric acid solution at a mass ratio of 1:5, mix and stir for 35 minutes, filter, take the filter cake and add 12% NaOH solution at a mass ratio of 1:6, mix and stir for 40 minutes, Filter and take the filter residue and dry it in an oven at 65°C for 3 hours to obtain the pretreated weathered coal.
[0044] Rele...
Embodiment 2
[0052] Additives: Mix methyl silicone oil, boron nitride, bamboo fiber passed through a 120-mesh sieve, and absolute ethanol in a mortar at a mass ratio of 3:1:4:0.5, and grind at 350r / min for 3 hours to obtain the additive.
[0053] Amine reagent: Mix ethylenediamine and cyclohexylamine at a mass ratio of 5:2 to obtain an amine reagent.
[0054] Thickener: Mix polyacrylamide, hydroxymethyl cellulose, and guar gum at a mass ratio of 5:1.5:1 to obtain a thickener.
[0055] Reagent: Mix citric acid solution with a mass fraction of 15% and gallic acid at a mass ratio of 10:5 to obtain a reagent.
[0056] Pretreatment of weathered coal: Take the weathered coal and add 15% tartaric acid solution at a mass ratio of 1:7, mix and stir for 47 minutes, filter, take the filter cake and add 12% NaOH solution at a mass ratio of 1:8, mix and stir for 50 minutes, Filter and take the filter residue and dry it in an oven at 72°C for 4 hours to obtain the pretreated weathered coal.
[0057] R...
PUM
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