Rubber asphalt concrete

A rubber asphalt and concrete technology, applied in building components, building insulation materials, construction, etc., can solve the problems of application limitations, insufficient rubber asphalt concrete viscosity, and inability to use special pavements, etc., to improve cohesion, good water damage resistance, and asphalt. Product stable effect

Active Publication Date: 2021-02-26
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of 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 temperature of mixing and stirring is 170-185 ° C; high-viscosity rubber asphalt, including 100 parts of asphalt, 5 Parts of rubber powder, 3 parts of SBS, 1.5 parts of oxidized polyethylene wax, 0.1 part of the first crosslinking aid, 3 parts of aromatic oil and 0.3 part of the second crosslinking aid.

[0035] Among them, petroleum asphalt is used for asphalt, 40-120 mesh is used for rubber powder, and the first cross-linking aids are DCP dicumyl peroxide, DTBP di-tert-butyl peroxide, 2,5-dimethyl-2,5 di One of tert-butyl peroxide hexane (double 25); one of the second crosslinking aid sulfur, TMTD, DCP, M or D.

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

[0037] S1: Heating the aromatic oil to 135-160°C, adding SBS and oxidized...

Embodiment 2～13 and comparative example 1～3

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

[0045] Table 1 is the composition ratio of Examples 1-13 and Comparative Examples 1-3

[0046] asphalt rubber powder SBS Oxidized polyethylene wax Aromatic oil first crosslinking agent 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 0.2 ...

Embodiment 14

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

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Abstract

The invention relates to the technical field of rubber asphalt concrete, and particularly discloses rubber asphalt concrete which is prepared by mixing and stirring high-viscosity rubber asphalt and graded stone at a high temperature of 170-185 DEG C, paving and rolling. The high-viscosity rubber asphalt comprises the following components in parts by weight: 100 parts of asphalt, 5-15 parts of rubber powder, 2-7 parts of SBS, 0.5-3 parts of oxidized polyethlene wax, 0.04-0.4 part of a first crosslinking aid, 1-4 parts of aromatic hydrocarbon oil and 0.2-0.6 part of a second crosslinking aid. According to the scheme, the adhesive force (dynamic viscosity at 60 DEG C) between the rubber asphalt and the graded stone is high, and the prepared rubber asphalt concrete can meet the requirements of special asphalt pavements and has the advantages of better high temperature resistance, water damage resistance and the like.

Description

technical field [0001] The invention relates to the technical field of rubber asphalt concrete, in particular to rubber asphalt concrete. Background technique [0002] In recent years, rubber asphalt has been widely used in road engineering. Rubber asphalt is first processed from waste tires into rubber powder, then combined according to a certain ratio of thickness and fineness, and at the same time adding a variety of high polymer modifiers, and fully swells and reacts with the base asphalt under high temperature conditions of sufficient mixing Finally, the modified rubber asphalt material is obtained by shearing and grinding. The high temperature stability, low temperature stability and elasticity of such rubber 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; rubber asphalt concrete , which is formed by mixing the above-mentioned...

Claims

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Application Information

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Patent Type & Authority Applications(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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