A kind of asphalt composition and a kind of emulsified asphalt and its preparation method and a kind of asphalt mixture and application
A kind of asphalt composition and emulsified asphalt technology, which is applied in the direction of building structure, building insulation materials, building components, etc., can solve the problems of low early strength, difficult to balance mixing time and early strength, etc., to improve early strength and improve bonding function, the effect of sufficient mixing time
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[0034] According to the third aspect of the present invention, the present invention provides a kind of preparation method of emulsified asphalt, described emulsified asphalt contains each component and water in the asphalt composition provided by the present invention, and this method comprises the following steps:
[0035] (1) mixing the composite additive into the base asphalt at a temperature of 120-150° C. to obtain modified asphalt;
[0036] (2) A soap solution is mixed into the modified asphalt and emulsified, and the emulsion contains the cationic emulsifier, the polymer modifier and water.
[0037] The asphalt composition and its composition have been described in detail above, and will not be described in detail here.
[0038] According to the method of the present invention, the amount of water in the soap solution is such that the amount of water in the finally prepared emulsified asphalt can meet the requirements. Generally, relative to 100 parts by weight of the...
Embodiment 1
[0057] (1) Mix abietic acid, octadecylphenol and octadecanoic acid in a weight ratio of 1:0.25:0.25 into 620 g of base pitch (purchased from Sinopec, grade 70) in the range of 120-150°C #), stir 0.5h, obtain modified pitch, wherein, the total addition of abietic acid, octadecylphenol and octadecanoic acid is 6.2g.
[0058] (2) 18g imidazoline emulsifier ( Among them, R 1 for -(CH 2 ) 16 CH 3 ) into water at 50° C. (the amount of water is 325 g), and then 35 g of styrene-butadiene latex (purchased from Medworthy Vacc, the trade mark is PC1468, and the solid content is 65% by weight) to obtain a soap solution. Keep the temperature of the soap solution between 50-70° C., add hydrochloric acid to adjust the pH value of the soap solution to 2.
[0059] (3) Mix the soap solution obtained in step (2) into the modified asphalt obtained in step (1) at a temperature within the range of 120-150° C., emulsify, and obtain emulsified asphalt after cooling down. The performance indicat...
Embodiment 2
[0078] Adopt the same method as Example 1 to prepare emulsified asphalt and asphalt mixture, the difference is that in step (1), the compound additive does not contain fatty acid, and the weight ratio of rosin acid to octadecylphenol is 1:0.25, and rosin acid and octadecylphenol are added in a total amount of 6.2 g. The properties of the prepared asphalt mixtures are listed in Table 3.
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