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A special modified asphalt for u-pave and its preparation method and application method

A technology of modified bitumen and matrix bitumen, used in climate change adaptation, building components, building thermal insulation materials, etc. The effect of good compactability, improved utilization, and increased resistance to water damage

Active Publication Date: 2021-12-14
JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The modulus of the existing common surface mixture is too high and lacks good low-temperature flexibility, which will lead to a mismatch between the modulus of the surface layer and the original pavement, which is not good for the crack resistance of the structure itself

Method used

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  • A special modified asphalt for u-pave and its preparation method and application method
  • A special modified asphalt for u-pave and its preparation method and application method
  • A special modified asphalt for u-pave and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Embodiment 1: a kind of U-pave special modified asphalt and its preparation method and application method

[0045] A U-pave special modified asphalt, calculated in parts by weight, includes the following components:

[0046] 100 parts of base asphalt, 5 parts of linear SBS (YH791), 0.4 parts of stabilizer, 3 parts of rubber oil, 0.5 parts of waste plastics, 0.5 parts of auxiliary additives; wherein, auxiliary additives are prepared from the following components: 50ml ethanol, 1mol bisphenol A , 3mol formaldehyde, 3mol diethylenetriamine, 0.5gY(OTf) 3 .

[0047] Preparation of auxiliary additives:

[0048] S1. Add 50ml of ethanol, 1mol of bisphenol A, 3mol of formaldehyde, 3mol of diethylenetriamine and 0.5g of catalyst Y(OTf) into the three-necked flask 3 , heating up to 80°C to react to obtain an intermediate compound;

[0049] S2. Then, the temperature was lowered to 60°C in the three-necked bottle, and 9 mol of epichlorohydrin was slowly added dropwise into the th...

Embodiment 2

[0067] Example 2: A special modified asphalt for U-pave and its preparation method and application method

[0068] A U-pave special modified asphalt, calculated in parts by weight, includes the following components:

[0069] 100 parts of base asphalt, 3 parts of star-shaped SBS, 0.7 parts of stabilizer, 3 parts of waste plastics, 2 parts of auxiliary additives; Among them, auxiliary additives are prepared from the following components: 50ml ethanol, 1mol bisphenol A, 3mol formaldehyde, 3mol triethylene Tetramine, 0.5gLn(OTf) 3 .

[0070] Preparation of auxiliary additives:

[0071] S1. Add 50ml of ethanol, 1mol of bisphenol A, 3mol of benzaldehyde, 3mol of triethylenetetramine and 2g of catalyst Ln(OTf) into the three-necked flask 3 , heating up to 80°C to react to obtain an intermediate compound;

[0072] S2. Cool down the three-necked bottle to 60° C., slowly add 9 mol of epichlorohydrin dropwise into the three-necked bottle at a rate of 45 drops / min; react at constant t...

Embodiment 3

[0088] Example 3: A special modified asphalt for U-pave and its preparation method and application method

[0089] A U-pave special modified asphalt, calculated in parts by weight, includes the following components:

[0090] 100 parts of base asphalt, 10 parts of SBR, 0.2 parts of stabilizer, 6 parts of rubber oil, 8 parts of waste plastics, 1.8 parts of auxiliary additives; wherein, auxiliary additives are prepared from the following components: 50ml ethanol, 1mol bisphenol A, 3mol formaldehyde, 3mol tetraethylenepentamine, 0.5gYb(OTf) 3 .

[0091] Preparation of auxiliary additives:

[0092] S1. Add 50ml of ethanol, 1mol of bisphenol A, 3mol of tert-butyl formaldehyde, 3mol of tetraethylenepentamine and 5g of catalyst Yb(OTf) into the three-necked flask 3 , heating up to 80°C to react to obtain an intermediate compound;

[0093] S2. Cool down the three-necked bottle to 60° C., slowly add 9 mol of epichlorohydrin into the three-necked bottle at a rate of 20 drops / min; rea...

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Abstract

The invention discloses a special modified asphalt for U-pave, a preparation method and its application in ultra-thin pavement, wherein, calculated in parts by weight, the special modified asphalt for U-pave comprises the following components in parts by weight: 100 parts of asphalt, 3-10 parts of thermoplastic elastomer, 0.1-5 parts of stabilizer, 1-6 parts of rubber oil, 3-8 parts of waste plastic particles, and 0.5-2 parts of auxiliary additives. The auxiliary additive is synthesized and prepared from bisphenol A, aldehyde, polyethylene polyamine and epichlorohydrin in solvent. Through the specific ratio and processing technology of the present invention, the U-pave special modified asphalt obtained after compounding can still have good U-pave pavement mixture performance under the condition of lowering the mixture mixing temperature, and the preparation process is simple And it is economical, and further applied to U‑pave10 mixture pavement can reduce the thickness of asphalt pavement pavement and reduce maintenance costs.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a U-pave special modified asphalt, a preparation method and an application thereof. Background technique [0002] The pace of expressway construction in my country is accelerating, and the maintenance and repair tasks of roads are intensified accordingly. my country has gradually shifted from the construction stage to the maintenance stage. Due to the large number of heavy-duty vehicles in our country's road vehicles, the phenomenon of heavy traffic is common, and the early damage of asphalt pavement is serious under heavy-duty traffic. How to effectively improve the anti-deformation ability of asphalt mixture and the cohesive force between binder and aggregate has become the key to solve the problem of pavement disease. At the same time, since expressway maintenance needs to be open to traffic quickly, rapid maintenance of expressways is of great significance to mainta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L19/00C08L91/00C08K5/17C04B26/26
CPCC08L95/00C04B26/26C08L2205/035C08L2201/08C08L53/02C08L19/003C08L91/00C08K5/17C04B14/02Y02A30/30
Inventor 陈李峰陈香潘友强关永胜徐德根臧冬冬盛晓慧
Owner JIANGSU SINOROAD TRANSPORTATION SCI & TECH CO LTD
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