A rubberized asphalt concrete

A rubberized asphalt and concrete technology, applied in building components, building insulation materials, construction, etc., can solve the problems of insufficient viscosity of rubberized asphalt concrete, inability to use special pavements, application limitations, etc., achieve excellent high temperature toughness and low temperature flexibility, improve cohesion , the effect of high dynamic viscosity

Active Publication Date: 2022-08-05
北京路德永泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a rubber asphalt concrete to solve the problem that the rubber asphalt concrete in the prior art has insufficient viscosity and cannot be applied on special road surfaces, so that the application is limited

Method used

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  • A rubberized asphalt concrete
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  • A rubberized asphalt concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A rubberized asphalt concrete, which is prepared by mixing high-viscosity rubber asphalt and graded stones at high temperature, paving and rolling, to obtain asphalt concrete, and the mixing and stirring temperature is 170-185 DEG C; the high-viscosity rubber asphalt comprises 100 parts of asphalt, 5 parts of Parts of rubber powder, 3 parts of SBS, 1.5 parts of oxidized polyethylene wax, 0.1 part of first crosslinking aid, 3 parts of aromatic oil and 0.3 part of second crosslinking aid.

[0035] Among them, the asphalt is selected from petroleum asphalt, the rubber powder is selected from 40 to 120 mesh, and the first cross-linking assistant is DCP dicumyl peroxide, DTBP di-tert-butyl peroxide, 2,5-dimethyl-2,5-di- A kind of tert-butyl peroxide hexane (double 25); a kind of second cross-linking assistant sulfur, TMTD, DCP, M-promoting or D-promoting.

[0036] The preparation method of above-mentioned high-viscosity rubber asphalt, comprises the following steps:

[0037...

Embodiment 2～13 and comparative example 1～3

[0044] The only difference from Example 1 is that the distribution ratio of each component of the high-viscosity asphalt is different, and the specific component distribution ratio is shown in Table 1 below.

[0045] Table 1 shows the composition ratios of Examples 1 to 13 and Comparative Examples 1 to 3

[0046] asphalt rubber powder SBS Oxidized polyethylene wax Aromatic oil first cross-linking aid Second Crosslinking Auxiliary Example 1 100 5 3 1.5 3 0.1 0.3 Example 2 100 10 3 1.5 3 0.1 0.3 Example 3 100 15 3 1.5 3 0.1 0.3 Example 4 100 10 2 1.5 3 0.1 0.3 Example 5 100 10 7 1.5 3 0.1 0.3 Example 6 100 10 3 0.5 3 0.1 0.3 Example 7 100 10 3 3 3 0.1 0.3 Example 8 100 10 3 1.5 1 0.1 0.3 Example 9 100 10 3 1.5 4 0.1 0.3 Example 10 100 10 3 1.5 3 0.04 0.3 Example 11 100 10 3 1.5 3 0.4 0.3 Example 12 100 10 3 1.5 3 0.4...

Embodiment 14

[0048] The difference from Example 2 is that in step S3 of the high-viscosity rubber asphalt preparation method, a specially-made stirring device is used, combined with figure 1 and figure 2 As shown, the special stirring equipment includes a horizontally fixed stirring drum, an inlet is provided at the left end of the stirring drum, an outlet is provided at the right end, and a stirring shaft 10 is rotatably connected in the stirring drum, wherein the stirring shaft 10 is hollow and arranged on two sides of the stirring shaft 10. Both ends are connected with pipes through rotary joints, and several stirring blades 11 are fixed on the stirring shaft 10, and the heating medium (gas, water, liquid metal, etc.) flows through the stirring shaft 10 through the pipes, thereby heating the stirring shaft 10 and stirring blades 11, A driving mechanism for driving the stirring shaft 10 to rotate is also provided.

[0049] A connecting rod 12 is slidably connected in the stirring shaft 1...

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Abstract

The invention relates to the technical field of rubber asphalt concrete, and specifically discloses a rubber asphalt concrete. The asphalt concrete is prepared by mixing high-viscosity rubber asphalt and graded stones at high temperature, paving and rolling, and the mixing temperature is 170-185° C. ; Among them, high-viscosity rubber asphalt, in parts by weight, includes 100 parts of asphalt, 5 to 15 parts of rubber powder, 2 to 7 parts of SBS, 0.5 to 3 parts of oxidized polyethylene wax, and 0.04 to 0.4 parts of first cross-linking auxiliary agent , 1 to 4 parts of aromatic oil and 0.2 to 0.6 parts of the second cross-linking aid. The adhesive force (dynamic viscosity at 60°C) between the rubberized asphalt and graded stone in this scheme is high, and the rubberized asphalt concrete prepared by it can meet the requirements of special asphalt pavements, and has the advantages of better high temperature resistance and water damage resistance. .

Description

technical field [0001] The invention relates to the technical field of rubber asphalt concrete, in particular to a rubber asphalt concrete. Background technique [0002] In recent years, rubberized asphalt has been widely used in road engineering. Asphalt rubber is to process waste tires into rubber powder, and then combine them according to a certain thickness and gradation ratio. At the same time, a variety of high polymer modifiers are added, and they fully swell and react with the matrix asphalt under the high temperature condition of full mixing. Then, the modified rubber asphalt material is obtained by shearing and grinding. The high temperature stability, low temperature stability and elasticity of such rubberized asphalt materials are greatly improved compared with ordinary asphalt; at the same time, the reuse of waste tires can also save energy, protect the environment, and turn waste into treasure; rubberized asphalt concrete , that is, the above-mentioned rubber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C08L95/00C08L53/02C08L23/30C08K5/14C08K3/06C08K5/40
CPCC04B26/26C08L95/00C04B2111/0075C04B14/02C04B16/04C04B2103/0068C04B24/2682C04B24/00C04B22/02C08L53/02C08L23/30C08K5/14C08K3/06C08K5/40
Inventor 董大伟江宽刘双旺董进学马庆杰颜亮武晋巍
Owner 北京路德永泰环保科技有限公司
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