High-modulus asphalt additive

An asphalt additive and high modulus technology, applied in the field of asphalt modifiers, can solve problems affecting large-scale popularization and application, limited reserves of natural asphalt, etc., and achieve low price, increased compatibility, and good modification effect

Inactive Publication Date: 2017-03-22
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High melting point natural asphalt is a natural solid hydrocarbon, which can be mixed in asphalt to form a pre-prepared binder, and can also be added directly to the mixture in powder form to improve its bearing capacity and durability, but natural asphalt reserves are limited It also affects its large-scale promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A high modulus asphalt additive, the components and weight parts are as follows:

[0030] SBS 5Kg,

[0031] Used PP 30Kg,

[0032] 30Kg of waste PE,

[0033] 25Kg of waste rubber powder,

[0034] Glass fiber 3Kg,

[0035] Maleic anhydride grafted SBS 1Kg,

[0036] Maleic anhydride grafted polypropylene 2Kg,

[0037] Maleic anhydride grafted polyethylene 2Kg,

[0038] Waste gear oil 0.5Kg,

[0039] Silane coupling agent 0.1Kg,

[0040] 2,6-tertiary butyl-4-methylphenol 0.5Kg,

[0041] Dioctyl phthalate 0.9Kg,

[0042] The preparation method of the high modulus asphalt additive of this embodiment includes the following steps:

[0043] (1) Accurately weigh SBS, waste PP, waste PE, waste rubber powder and other compatibilizers and various additives, add them to the stirring device in turn, and stir at room temperature for 10 minutes to prepare a mixture;

[0044] (2) Add glass fiber to the mixture, stir for 1 min, and then use a twin-screw extruder to extrude and pelletize to obtain high modul...

Embodiment 2

[0047] A high modulus asphalt additive, the components and weight parts are as follows:

[0048] SBS 3Kg,

[0049] Used PP 35Kg,

[0050] 35Kg of waste PE,

[0051] 13Kg of waste rubber powder,

[0052] Glass fiber 5Kg,

[0053] Maleic anhydride grafted SBS 1Kg,

[0054] Maleic anhydride grafted polypropylene 3Kg,

[0055] Maleic anhydride grafted polyethylene 3Kg,

[0056] Silane coupling agent 0.2Kg,

[0057] 2,6-tertiary butyl-4-methylphenol 0.8Kg,

[0058] Dioctyl phthalate 1Kg,

[0059] The preparation method of the high modulus asphalt additive in this embodiment is the same as that of Example 1.

[0060] The softening point of the high modulus asphalt additive prepared in Example 2 was tested and it was 82.1, which proved that its high modulus performance was good. The high modulus asphalt additive prepared in this embodiment is added to the asphalt mixture at 0.4% of the total mass of the asphalt mixture, and the dynamic modulus of the asphalt mixture is tested. The addition of the add...

Embodiment 3

[0062] A high modulus asphalt additive, the components and weight parts are as follows:

[0063] SBS 10Kg,

[0064] 25Kg of waste PP,

[0065] 20Kg of waste PE,

[0066] Waste rubber powder 30Kg,

[0067] Glass fiber 5Kg,

[0068] Maleic anhydride grafted SBS 2Kg,

[0069] Maleic anhydride grafted polypropylene 2Kg,

[0070] Maleic anhydride grafted polyethylene 2Kg,

[0071] Silane coupling agent 0.2Kg,

[0072] Bis(3,5-tertiary butyl-4-hydroxyphenyl) sulfide 0.8Kg,

[0073] Dioctyl phthalate 2Kg,

[0074] The preparation method of the high modulus asphalt additive in this embodiment is the same as that of Example 1.

[0075] The softening point of the high modulus asphalt additive prepared in Example 3 was tested and it was greater than 90, which proved that its high modulus performance was good. The high modulus asphalt additive prepared in this embodiment is added to the asphalt mixture at 0.4% of the total mass of the asphalt mixture, and the dynamic modulus of the asphalt mixture is test...

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Abstract

The invention relates to a high-modulus asphalt additive, prepared from, by weight, 1-10 parts of SBS (styrene butadiene styrene), 20-40 parts of waste PP (polypropylene), 20-40 parts of waste PE (polyethylene), 10-30 parts of waste rubber powder, 1-5 parts of glass fiber, 4-8 parts of a compatibilizer, and 1-3 parts of an aid. The compatibilizer is a mixture of maleic acid grafted SBS, maleic acid grafted polypropylene and maleic acid grafted polyethylene. The additive containing various waste polymer ingredients is low in cost and effective for asphalt modification, may be used to modify asphalt to produce high-modulus asphalt, is high in anti-rutting capacity, and is applicable to high-grade highway pavements.

Description

Technical field [0001] The invention belongs to the field of asphalt modifiers and relates to a high modulus asphalt additive. Background technique [0002] Asphalt pavement has the advantages of smoothness and no joints, comfortable driving, low noise, and easy maintenance. It is the most common type of road surface in my country’s expressways. However, in actual use, due to the continuous increase of vehicle speed and increasing traffic flow The proportion of heavy-duty and even over-heavy vehicles in Yamato has been increasing, causing serious damage to the road surface, such as rutting, cracking, spalling, potholes, etc., which greatly reduces the performance of the road, and rutting is more serious. Form of destruction. The reason is that the high and low temperature resistance of road asphalt has a decisive influence. In recent years, there have been many studies on high-modulus asphalt materials with excellent high-temperature and low-temperature properties. They are regar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/12C08L23/06C08L19/00C08L51/00C08L51/06C08K13/04C08K7/14C08K5/12C08K5/13
CPCC08L95/00C08K2201/003C08L2205/02C08L2205/025C08L2205/035C08L2205/08C08L53/02C08L23/12C08L23/06C08L19/003C08L51/006C08L51/06C08K13/04C08K7/14C08K5/12C08K5/13
Inventor 李军伟张宝行李哲辉
Owner TIANJIN CHENGJIAN UNIV
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