Rubber asphalt concrete

A rubber asphalt and concrete technology, applied in the field of rubber asphalt concrete, can solve the problems of poor high temperature storage stability and poor comprehensive road performance of rubber asphalt concrete, and achieve the effects of improving performance, good compatibility and improving compatibility.

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

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Problems solved by technology

[0005] The present invention intends to provide a rubber asphalt concrete to solve the problem that the existing rubber asphalt has poor high-temperature storage stability, which in turn leads to poor comprehensive road performance of the prepared rubber asphalt concrete

Method used

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  • Rubber asphalt concrete
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Examples

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preparation example Construction

[0050] The preparation method of interfacial modifier, comprises the following steps:

[0051] In step 1, the SBS is crushed and sieved, and the SBS powder with a particle size of 40-120 mesh is selected for use.

[0052] Step 2: put the EVA and crushed SBS powder into the hopper of the extruder according to the metering, mix and melt them at a temperature of 140-190°C, and introduce them into the second-stage extruder.

[0053] Step 2: put rubber cross-linking agent and carbon black into the two-stage extruder according to metering, mix and melt at a temperature of 140-190° C., extrude, cool, and pelletize to form an interface modifier.

[0054] The preparation method of rubber asphalt comprises the following steps:

[0055] Step 1, material mixing

[0056] Weigh the petroleum asphalt according to the measurement and put it into the mixing tank A, and heat the petroleum asphalt to 155-170 ° C, in this embodiment, heat to 160 ° C; then weigh the interface modifier according ...

Embodiment 1

[0069] Embodiment 16 differs from Embodiment 1 only in that, as figure 1 As shown, the present embodiment uses a high-speed shear emulsifier, including a tank body 1, a heating channel is arranged on the outer wall of the tank body 1, and a heat source is connected to the heating channel (for example, water, oil, liquid metal, etc. are passed into the heating channel) . The top of the tank body 1 is provided with a sealing cover body 2 , the sealing cover body 2 is provided with a material inlet 21 , and the bottom of the tank body 1 is provided with a material outlet port 11 . The material inlet 21 is provided with a sealing plug, and the material outlet 11 is provided with a discharge valve.

[0070] The inner side of the sealing cover 2 is fixed with a motor, the driving shaft 4 of the motor is coaxially fixed with the stirring shaft 3, and the driving gear 31 is coaxially fixed on the stirring shaft 3; the sealing cover 2 is also rotatably connected with the driving shaft...

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Abstract

The invention belongs to the technical field of compositions of mortar, concrete or artificial stone of asphalt materials, and discloses rubber asphalt concrete, which comprises rubber asphalt and graded stone, wherein the rubber asphalt comprises petroleum asphalt, rubber powder and an interface modifier; and the interface modifier comprises SBS, EVA, a rubber cross-linking agent and carbon black. The preparation method of the rubber asphalt concrete comprises the following steps: fully stirring and mixing the prepared rubber asphalt and graded stone in a high-temperature environment to formthe rubber asphalt concrete. The rubber asphalt concrete is prepared from the improved rubber asphalt, and the used rubber asphalt solves the problems of poor storage stability and unstable comprehensive pavement performance and poor performance caused by poor storage stability when the rubber asphalt is applied to an asphalt mixture in the prior art; the performance of the rubber asphalt concretecan be stable.

Description

technical field [0001] The invention belongs to the field of asphalt material mortar, concrete or artificial stone composition, in particular to a rubber asphalt concrete. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is mainly used to mix with a certain grade of mineral material, crushed stone or crushed gravel, stone chips or sand, ore powder It is mixed according to a specific ratio and under specific conditions to form asphalt concrete, which is mainly used as a pavement material. [0003] With the rapid development of the economy, transportation has also been developed rapidly, which will make the pavement material (asphalt concrete) prone to cracks and rutting under the repeated action of long-term vehicle loads, temperature changes, and freeze-thaw cycles. And other different forms of damage, the service life is also shorter. Therefore, in order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B24/26
CPCC04B26/26C04B40/0039C04B2111/0075C04B18/22C04B14/02C04B24/2688C04B24/26C04B14/022
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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