Warm-mix asphalt and production device thereof

A technology for warm-mix asphalt and production equipment, which is applied in the field of asphalt modification, and can solve problems such as environmental pollution, inconvenient construction, and waste of heat energy, and achieve the effects of energy saving, simple structure, and simple and convenient construction technology

Active Publication Date: 2016-02-10
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Asphalt pavement is the most widely used high-grade pavement (including sub-high-grade pavement) in road construction. It is various types of pavement paved by mixing road asphalt materials into mineral materials; The ability of the material to resist damage to the road surface caused by driving and natural factors makes the road surface smooth, less dusty, impermeable, and durable; while the asphalt mixture required for the existing asphalt pavement paving mostly uses hot-mix asphalt mixture, and the production and construction temperatures are extremely high , so heat energy is wasted, the environment is seriously polluted, and construction is inconvenient

Method used

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  • Warm-mix asphalt and production device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1, the present invention is achieved in this way, a kind of warm mix asphalt, characterized in that the raw material components of the warm mix asphalt are 70# base asphalt or SBS asphalt, warm mix modifier and other additives.

[0047] Further, the asphalt includes the following components and their mass percentages are: 21.15%-23.43% of saturated components, 32.26%-46.00% of aromatic components, 21.64%-33.73% of colloids, and 7.96%-10.83% of asphaltenes.

[0048] Further, the softening point of the pitch is 99.5°C to 101.4°C.

[0049] Further, the warm mixing modifier is a synthetic linear aliphatic hydrocarbon or polyolefin asphalt modifier.

[0050] Further, the other additives are deodorants, flavor enhancers, compatibilizers, and oxidized pigments.

[0051] Further, the optimal asphalt ratio of the 70# base asphalt mixture is 4.6%-4.7%.

[0052] Further, the optimal asphalt ratio of the SBS asphalt mixture is 6.1%-6.2%.

[0053] Further, the compatibil...

Embodiment 2

[0079] Embodiment 2, the preparation method of warm mix asphalt of the present invention is:

[0080] (1) Mix the modifier and the additive evenly, and react and mix in an internal mixer for 30 minutes at 120° C. to obtain a modified compound, and obtain modified compound particles after mechanical granulation;

[0081] (2) Heat the base asphalt to 140°C, slowly add the modified composite particles, at a constant temperature, use a high-speed shear emulsifier to cut for 45 minutes, control the speed of the shear to 3500-4500r / min, and then place it in the mixer Stir at low speed for 30 minutes to prepare warm mix asphalt.

Embodiment 3

[0082] Example 3, figure 1 The structure of the production device provided by the invention is shown, figure 2 The structure of the liner in the production device is shown, as shown in the figure, it is used to prepare the production device for warm-mix asphalt according to claim 1, wherein the production device includes an asphalt preheating tank 1, batching System, screw conveyor 2, high-shear emulsifier 3, constant temperature mixing tank 4, asphalt storage tank 5 and motor control system, wherein, asphalt preheating tank 1 is connected with screw conveyor 2 and high-shear emulsifier 3 through the batching system connection, the high-shear emulsifier 3 is connected with the constant temperature mixing tank 4, and the asphalt stirred by the constant temperature mixing tank 4 is transported to the asphalt storage tank 5.

[0083] Further, the asphalt preheating tank 1 also includes a weighing device and a stirring system.

[0084] Further, the middle part of the tank body...

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Abstract

The invention discloses warm-mix asphalt and a production device thereof. The warm-mix asphalt is prepared from 70# matrix asphalt or SBS asphalt, a warm-mix modifier and other additives. A preparation method of the warm-mix asphalt includes the steps that the matrix asphalt is preheated, the modifier is added at the constant temperature of 140 DEG C, and the mixture is stirred at a low speed through a machine to obtain the warm-mix asphalt. The production device of the warm-mix asphalt comprises an asphalt preheating tank, a constant-temperature stirring tank, an asphalt storage tank and a motor control system, wherein the asphalt is preheated and stirred through the asphalt preheating tank and conveyed to the stirring tank at the constant temperature of 140 DEG C through a pressure system, the warm-mix modifier is added, stirring continues till the warm-mix asphalt is obtained, and finally the obtained warm-mix asphalt is conveyed to the asphalt storage tank. The warm-mix asphalt can obviously lower the emission of dust, waste and other pollutants and is low in construction temperature. The asphalt production device is simple in structure and low in cost, meets production requirements and saves energy.

Description

technical field [0001] The invention belongs to the technical field of asphalt modification, and in particular relates to warm-mix asphalt and a production device thereof. Background technique [0002] Asphalt pavement is the most widely used high-grade pavement (including sub-high-grade pavement) in road construction. It is various types of pavement paved by mixing road asphalt materials into mineral materials; The ability of the material to resist damage to the road surface caused by driving and natural factors makes the road surface smooth, less dusty, impermeable, and durable; while the asphalt mixture required for the existing asphalt pavement paving mostly uses hot-mix asphalt mixture, and the production and construction temperatures are extremely high , so heat energy is wasted, the environment is seriously polluted, and construction is inconvenient. Contents of the invention [0003] The purpose of the present invention is to provide a kind of warm mix asphalt and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/02E01C19/08E01C19/10C04B26/26
CPCY02A30/30
Inventor 肖杰陆宏新唐咸远莫志凡张坤球姚青云唐双美
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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