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Warm mixing and antiflaming asphalt mixture and preparation method thereof

A technology of asphalt mixture and warm mixing, which is applied in the field of preparation of warm-mix flame-retardant asphalt mixture and warm-mix flame-retardant asphalt mixture. Less equipment corrosion and high concentration of flame retardant

Active Publication Date: 2014-02-12
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Moreover, most of the asphalt mixture used in road engineering is hot mix asphalt mixture HMA (HotMixAsphalt). During the production process, asphalt and stone are mixed at a high temperature of 150-180°C, and the stone and asphalt are heated to such a high temperature. Not only consumes a lot of energy, but also produces a lot of smoke and harmful gases in the production process

Method used

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  • Warm mixing and antiflaming asphalt mixture and preparation method thereof
  • Warm mixing and antiflaming asphalt mixture and preparation method thereof
  • Warm mixing and antiflaming asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A, prepare each component according to asphalt: organic viscosity reducer EC-120: high-efficiency composite flame retardant: crushed stone: inert filler = 4.7: 0.14: 1.36: 91.0: 2.8;

[0038] B. Put the inert filler and gravel heated to 140°C into the mixing tank for dry mixing for not less than 5 seconds, then add the hot asphalt heated to 145°C into the mixing tank, then add the organic viscosity reducer and Add the high-efficiency composite flame retardant into the mixing tank and stir for 40 seconds, so that the organic viscosity reducer and high-efficiency composite flame retardant are evenly coated on the gravel until the gravel is covered with asphalt and no white material;

[0039] C. Unloading: Control the exit temperature of the mixture at 135°C to obtain the warm-mix flame-retardant asphalt mixture.

[0040] The test method of this embodiment is implemented in accordance with the industry standard JTJ052-2000 "Test Regulations for Asphalt and Asphalt Mixtures...

Embodiment 2

[0046] A, according to asphalt: organic viscosity reducer EC-120: high-efficiency composite flame retardant: gravel: inert filler = 4.7: 0.05: 1.45: 91.0: 2.8, prepare each component;

[0047] B. Put the inert filler and gravel heated to 145°C into the mixing tank for dry mixing for not less than 5 seconds, then add the hot asphalt heated to 145°C into the mixing tank, and then add the organic viscosity reducer and Add the high-efficiency composite flame retardant into the mixing tank and stir for 45 seconds, so that the organic viscosity reducer and high-efficiency composite flame retardant are evenly coated on the gravel until the gravel is covered with asphalt and no white material;

[0048] C. Unloading: Control the exit temperature of the mixture at 140°C to obtain the warm-mix flame-retardant asphalt mixture.

[0049] Test methods and technical standards are implemented with reference to Example 1. The following is a comparison between the asphalt mixture with warm mix fl...

Embodiment 3

[0055] A. According to asphalt: warm mix agent EC-120: high-efficiency composite flame retardant: crushed stone: inert filler = 4.7: 0.09: 1.41: 91.0: 2.8, prepare each component;

[0056] B. Put the inert filler and gravel heated to 150°C into the mixing tank for dry mixing for not less than 5 seconds, then add the hot asphalt heated to 145°C into the mixing tank, then add the organic viscosity reducer and Add the high-efficiency composite flame retardant into the mixing tank and stir for 50 seconds, so that the organic viscosity reducer and high-efficiency composite flame retardant are evenly coated on the gravel until the gravel is covered with asphalt and no white material;

[0057] C. Unloading: Control the exit temperature of the mixture at 140°C to obtain the warm-mix flame-retardant asphalt mixture.

[0058] Test methods and technical standards are implemented with reference to Example 1. The following is a comparison of the asphalt mixture with warm mix flame retarda...

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Abstract

The invention discloses a warm mixing and antiflaming asphalt mixture, and further discloses a preparation method thereof as follows: first, inert filler and heated gravel are put into a stirring cylinder to be drily mixed for more than 5 seconds, then heated asphalt is poured into the stirring cylinder, and organic thinner visbreaker and efficient compound type flame retardant are added in the stirring cylinder to be stirred so as to uniformly cover the gravel until the gravel is completely covered by the asphalt without any grey material; and the factory inspection temperature of the mixture is controlled between 135 to 140 DEG C so that the warm mixing and antiflaming asphalt mixture is obtained. Compared with the common asphalt, the asphalt mixture prepared by the invention not only has better high-temperature performance, ageing resistance, temperature sensibility and the like, but also has good heat insulation effect, no melting drippage, no thermal contraction and limited oxygen index larger than 32, adds organic thinner visbreaker so as to make the warm mixing and antiflaming asphalt mixture integrate the advantages of the flame retardant and warm stirring retardant into a whole, and is more beneficial to being promoted and applied on asphalt road surfaces.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to a warm-mix flame-retardant asphalt mixture. [0002] The invention also relates to a preparation method of the warm-mix flame-retardant asphalt mixture. Background technique [0003] With the rapid development of expressways in our country, the number of highway tunnels as a special section of the highway is also increasing, and the length varies from several hundred meters to several kilometers. It is assumed that in this special section, once a fire occurs, such as: car cargo Fires and traffic accidents. Fires caused by vehicle collisions and subversion of cargo vehicles (especially tank trucks) will cause large smoke, high temperature, difficulty in exhausting smoke, difficulty in evacuation, and difficulty in fire fighting. The consequences are unimaginable. There have been many such accidents and the losses have been heavy. At present, for the fire prevention of highway tunnels, we sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B14/02
CPCY02A30/30
Inventor 慕为民何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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