Modified asphalt for steel box beam bridge floor and preparing method thereof
A technology for modifying asphalt and steel box girder, applied in the field of material science, can solve problems such as surface asphalt slippage, and achieve the effects of stable performance, good waterproof performance and good elasticity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0024] At the same time, the present invention also provides a method for preparing the modified asphalt used for steel box girder bridge deck. The method includes the following steps:
[0025] A. Mix rock asphalt and petroleum asphalt at 150-180°C, stir and pre-mix for 0.5-1h to swell, and then initial shear, then stir for 1.5-2h;
[0026] B. After the mixing is completed, the three-stage high-speed shearing machine is used for fine shearing before storage, so that the rock powder is evenly blended into the petroleum asphalt;
[0027] C. Store while stirring at a temperature of 150-160°C;
[0028] D. Add rubber asphalt and modifier to the product obtained in step C, and react after mixing. The reaction temperature is 150-180°C, the reaction time is 3-4h, and the reaction process is stirred at a high speed, and the stirring speed is 2000-3000r / min. modified asphalt.
Embodiment 1
[0031] Example 1 Prepare modified asphalt 1 with the technical scheme of the present invention
[0032] The raw material composition of the modified asphalt 1 is as follows: in parts by weight, 10 parts of rock asphalt, 18 parts of rubber asphalt, 5 parts of modifier, and 85 parts of petroleum asphalt. The modifier is ferrous sulfate: ferrous chloride: coal tar = 1:1:3.
[0033] The preparation method is as follows, comprising the following steps:
[0034] A. Mix rock asphalt and petroleum asphalt at 150°C, stir the premixed swell for 0.5h, then initial shear, and then stir for 1.5h;
[0035] B. After the mixing is completed, the three-stage high-speed shearing machine is used for fine shearing before storage, so that the rock powder is evenly blended into the petroleum asphalt;
[0036] C. Store while stirring at a temperature of 150°C;
[0037] D. Add rubber asphalt and modifier to the product obtained in step C, and react after mixing. The reaction temperature is 150°C, ...
Embodiment 2
[0038] Example 2 Prepare modified asphalt 2 with the technical scheme of the present invention
[0039] The raw material composition of the modified asphalt 2 is: by weight, 15 parts of rock asphalt, 22 parts of rubber asphalt, 9 parts of modifier, and 90 parts of petroleum asphalt. The modifier is ferrous sulfate: ferrous chloride: coal tar = 2:2:5.
[0040] The preparation method is as follows, comprising the following steps:
[0041] A. Mix rock asphalt and petroleum asphalt at 180°C, stir for premixing and swelling for 1 hour, then initial shear, and then stir for 2 hours;
[0042] B. After the mixing is completed, the three-stage high-speed shearing machine is used for fine shearing before storage, so that the rock powder is evenly blended into the petroleum asphalt;
[0043] C. Store while stirring at a temperature of 160°C;
[0044] D. Add rubber asphalt and modifier to the product obtained in step C, and react after mixing. The reaction temperature is 180°C, the rea...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More