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Bio-based room temperature liquid asphalt and its preparation method and application

A liquid asphalt, bio-based technology, applied in building construction, building insulation materials, building components, etc., to achieve the effects of rapid strength development, low cost and improved performance

Active Publication Date: 2021-05-14
湖南鑫长胜材料科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve at least part of the technical problems in the prior art, the present invention provides a kind of bio-based normal temperature liquid asphalt, which greatly improves the performance of plant asphalt as a substitute (modifier) ​​to prepare road normal temperature asphalt, and avoids the failure of direct use. Problems with conventional asphalt mixtures as road structures and cold patching materials

Method used

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  • Bio-based room temperature liquid asphalt and its preparation method and application

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preparation example Construction

[0039] [Preparation method of bio-based normal temperature liquid asphalt]

[0040] The preparation method of bio-based room temperature liquid asphalt of the present invention at least comprises the following steps:

[0041] (1) Heating base petroleum asphalt to 140-160°C;

[0042] (2) Heat the bio-based softener to 40-60°C, add it to the base petroleum asphalt heated in (1), after stirring at the first speed, keep stirring at the second speed for standby;

[0043] (3) Add modifier to (2), after stirring at the first speed, the bio-based room temperature liquid pitch of the present invention is obtained;

[0044] Wherein, the amount of the base petroleum asphalt is 30-40 parts by weight, the amount of the bio-based softener is 40-50 parts by weight and the modifier is 15-25 parts by weight.

[0045] In the present invention, the first stirring speed is generally greater than the second stirring speed. Preferably, the first stirring speed is 80-250r / min, more preferably 100...

Embodiment

[0062] 1. Preparation of bio-based room temperature liquid asphalt

[0063] Weigh 40 parts of base petroleum asphalt, 45 parts of bio-based softener and 15 parts of modifier in parts by weight. Among them, the bio-based softener is prepared by unsaturated fatty acid and plant asphalt in a ratio of 0.9:1; the unsaturated fatty acid is oleic acid; the modifier is prepared by epoxy resin and polyacrylamide in a ratio of 2.5:1. Concrete preparation steps are as follows:

[0064] Step 1, heating the above-mentioned base petroleum pitch weighed by weight to 140°C and then keeping it warm for later use;

[0065] Step 2: Heat the bio-based softener to 50°C, add it to the base petroleum asphalt treated in step 1, stir at a speed of 100r / min for 10 minutes, and stir at a speed of 30r / min for later use;

[0066] Step 3, adding a modifier weighed in parts by weight, and stirring at a speed of 100 r / min for 15 minutes to obtain a bio-based room temperature liquid asphalt;

[0067] Step ...

Embodiment 2

[0071] Except for 35 parts of base petroleum asphalt, 40 parts of bio-based softener and 20 parts of modifier, the others are the same as in Example 1.

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Abstract

The invention discloses bio-based normal-temperature liquid asphalt, a preparation method and application thereof. The bio-based room temperature liquid asphalt of the present invention comprises 30-40 parts by weight of base petroleum asphalt, 40-50 parts by weight of bio-based softener and 15-25 parts by weight of modifier. The bio-based room-temperature liquid asphalt mixture obtained by mixing the bio-based room-temperature liquid asphalt of the present invention with a strengthening agent and graded aggregates can be used as a material for road surface pothole repair and new road paving, and has low cost, high strength and The characteristics of rapid strength development.

Description

technical field [0001] The invention relates to road construction materials, in particular to bio-based normal-temperature liquid asphalt and its preparation method and application. Background technique [0002] As normal-temperature liquid asphalt does not require heating during use, it has lower requirements for equipment, climate, and personnel in production and construction, and has significant advantages in road maintenance. At present, traditional room temperature liquid asphalt (emulsified asphalt, solvent-based room temperature liquid asphalt) generally has the problem of poor performance, and it is difficult to achieve the effect of hot mix asphalt mixture; high. How to realize the higher performance of room temperature asphalt materials under the condition of lower cost is one of the most difficult problems faced by room temperature liquid asphalt materials. [0003] Vegetable asphalt is the waste residue produced in the process of vegetable oil processing, that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08L33/26C08K5/09C04B26/26
CPCC04B26/26C08L95/00C08L2205/025C08L2205/035C04B22/064C04B22/10C04B22/00C04B14/02C08L63/00C08L33/26C08K5/09
Inventor 李九苏王潇潇沈增晖林咸强张毅黄志轩王威
Owner 湖南鑫长胜材料科技有限公司
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