High-modulus asphalt mixture additive and preparation method thereof

A kind of asphalt mixture and additive technology, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of low-temperature cracking resistance, anti-rutting performance, high-temperature performance and low-temperature performance, poor construction workability, and preparation process. Complicated problems, to achieve the effect of improving low-temperature cracking resistance, water damage resistance, and high-temperature modulus

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above two high-modulus asphalt modifiers use many components, the preparation process is complicated, the compatibility with asphalt is poor, and high mixing temperature is required, the workability of construction is not good, and their low-temperature cracking resistance and rutting resistance Performance and other high temperature performance and low temperature performance can not be balanced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] High modulus asphalt mixture additive WG-1, the formula is by weight:

[0042] Waste plastic: 100 copies

[0043] EVA resin: 15 parts

[0044] Styrene-butadiene rubber derivative particles: 15 parts

[0045] Ethylene tar: 10 parts

[0046] Composite modifier A: 15 parts

[0047] Antioxidant 2246S: 0.3 parts

[0048] Carbon black 6800: 8 parts

[0049] JY-KF: 1.0 copies;

[0050] The preparation method is as follows:

[0051] 1) Add all raw materials into the powder tank, stir and mix evenly at room temperature;

[0052] 2) Put the homogeneously mixed material in step 1 into a twin-screw extruder, extrude and granulate at an extrusion temperature of 120-130°C, and extrude a cylindrical strip with a maximum diameter of no more than 5.5mm;

[0053] 3) The product obtained in step 2) is cooled by air blowing, pelletized by a pelletizer, and the high modulus asphalt mixture additive WG-1 of the present invention is obtained, and its properties are shown in Table 1. ...

Embodiment 2

[0056] According to the preparation method of Example 1, the components of the high modulus additive WG-2 are as follows in parts by weight:

[0057] Waste plastic: 100 parts

[0058] EVA resin: 10 parts

[0059] Styrene-butadiene rubber derivative particles: 25 parts

[0060] Ethylene tar: 20 parts

[0061] Composite modifier B: 10 parts

[0062] Antioxidant 2246S: 0.5 parts

[0063] Carbon black 6800: 3 parts

[0064] JY-KF: 0.5 copies;

[0065] The properties of additives and their properties of high modulus asphalt mixture are shown in Table 1 and Table 3.

Embodiment 3

[0067] According to the preparation method of Example 1, the components of high modulus additive WG-3 are as follows by weight:

[0068] Waste plastic: 100 copies

[0069] EVA resin: 20 parts

[0070] Styrene-butadiene rubber derivative particles: 20 parts

[0071] Ethylene tar: 15 parts

[0072] Composite modifier A: 20 parts

[0073] Antioxidant 2246S: 0.4 parts

[0074] Carbon black 6800: 5 parts

[0075] JY-KF: 1.5 copies;

[0076] The properties of additives and their high modulus asphalt mixture properties are shown in Tables 1 and 3.

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Abstract

The invention discloses a high-modulus asphalt mixture additive and a preparation method thereof. The additive comprises, by weight, 100 parts of plastic, 10-20 parts of EVA resin, 15-25 parts of butadiene-styrene rubber and/or derivative thereof, 10-20 parts of ethylene tar and 10-20 parts of composite modifier, wherein the composite modifier is composed of a mesoporous molecular sieve coated with epoxy grafted polyethylene wax. The additive has high compatibility with asphalt and a mixture, so that resistance to low-temperature cracking of a high-modulus asphalt mixture is improved remarkably, the additive has excellent resistance to track and water damage, and the mixture is low in blending temperature and high in construction peaceability.

Description

technical field [0001] The invention relates to a high-modulus asphalt mixture additive and a preparation method thereof, in particular to a warm-mix type low-resistance high-modulus asphalt mixture additive and a preparation method thereof. Background technique [0002] With the rapid development of asphalt pavement construction in China and the increasing traffic load, the early damage phenomenon of asphalt pavement is serious, and the rutting asphalt pavement damage is the most serious damage form. Especially in the hot summer areas, rutting is very common in heavily overloaded highways, long longitudinal slope sections, bus stops on urban roads, intersections and other places. Rutting affects driving safety, and can also cause other road surface diseases, such as network cracks, potholes and so on. Reduce the service life of the road surface, resulting in frequent maintenance of the road surface and increasing construction investment. [0003] High modulus asphalt conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/08C08L9/06C08L91/00C08L95/00C08K13/06C08K9/04C08K3/34C08K3/04
CPCC08L23/06C08L23/12C08L95/00C08L2205/02C08L2205/035C08L23/0853C08L9/06C08L91/00C08K13/06C08K9/04C08K3/34C08K3/04
Inventor 陈杰徐青柏宣根海
Owner CHINA PETROLEUM & CHEM CORP
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