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Rubber asphalt mixture and preparation method thereof

A rubber asphalt and mixture technology, which is applied in the field of asphalt mixture, can solve the problems of rubber asphalt mixture compressive strength and fatigue resistance, etc., to improve the compressive strength and fatigue resistance, improve the compactness, and the scope of application Extended effect

Active Publication Date: 2022-02-11
宏辉建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although rubber asphalt mixture can turn waste tires into treasures and reduce the harm of waste tires to the natural environment, adding rubber powder to asphalt mixture will easily affect the adhesion between asphalt and aggregates, making the rubber asphalt mixture Compressive strength as well as fatigue resistance are affected, therefore, there is still room for improvement

Method used

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  • Rubber asphalt mixture and preparation method thereof
  • Rubber asphalt mixture and preparation method thereof
  • Rubber asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A preparation method for rubber asphalt mixture, comprising the following steps:

[0063] S1. Add 8kg of waste tire rubber powder to the first stirring tank, raise the temperature to 180°C, and stir at a speed of 250r / min. While stirring, add 72.5kg of aggregate, 5kg of mineral powder, and polyoxyethyl glyceryl ether 5kg, 0.3kg of sodium laureth sulfate and 0.1kg of disalicylate, stirred and mixed evenly to form an intermediate mixture.

[0064] S2. Add 10kg of petroleum asphalt to the second stirring tank, raise the temperature to 200°C, stir at a speed of 200r / min, add the intermediate mixture prepared in S1 and 0.5kg of silane coupling agent while stirring, and stir to mix Evenly, the rubber asphalt mixture is obtained.

[0065] The particle size of the waste tire rubber powder in this embodiment is 5-8mm.

[0066] The aggregate in this embodiment is basalt with a particle size of 20-25mm.

Embodiment 2

[0068] The difference with embodiment 1 is:

[0069] In step S1, add 5 kg of waste tire rubber powder, 75 kg of aggregate, 4 kg of mineral powder, 3.5 kg of polyoxyethyl glyceryl ether, 0.4 kg of sodium laureth sulfate and 0.15 kg of disalicylate, and mix uniformly to form an intermediate mixture .

[0070] In step S2, 12.5 kg of petroleum asphalt was added, and the intermediate mixture prepared in S1 and 0.75 kg of silane coupling agent were added while stirring, and the rubber asphalt mixture was obtained after mixing evenly.

Embodiment 3

[0072] The difference with embodiment 1 is:

[0073] In step S1, add 6.5kg of waste tire rubber powder, 70kg of aggregate, 6kg of mineral powder, 2kg of polyoxyethyl glyceryl ether, 0.5kg of sodium lauryl ether sulfate and 0.2kg of disalicylate, and mix well to form an intermediate mixture .

[0074] In step S2, add 15 kg of petroleum asphalt, and add the intermediate mixture prepared in S1 and 1 kg of silane coupling agent while stirring, and mix evenly to obtain the rubber asphalt mixture.

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Abstract

The invention relates to the field of asphalt mixture, and aims at the problem that the strength of rubber asphalt mixture is easily affected by rubber, and provides a rubber asphalt mixture, which includes the following components in parts by mass: 10-15 parts of petroleum asphalt; waste tires 5-8 parts of rubber powder; 70-75 parts of aggregate; 4-6 parts of mineral powder; 0.5-1 part of silane coupling agent; 2-5 parts of polyoxyethyl glyceryl ether; 0.5 parts; Disalicylate 0.1‑0.2 parts. The preparation method of the rubber asphalt mixture comprises the following steps: S1, mixing waste tire rubber powder, aggregate, mineral powder, polyoxyethyl glyceryl ether, sodium laureth sulfate and disalicylate to form an intermediate mixture; S2 , Mix petroleum asphalt, intermediate mixture and remaining components to get rubber asphalt mixture. By using polyoxyethyl glyceryl ether, sodium laureth sulfate and disalicylate to cooperate with each other, it is beneficial to blend the components evenly, and it is beneficial to improve the compressive strength and fatigue resistance of the rubber asphalt mixture .

Description

technical field [0001] The invention relates to the field of asphalt mixture, more specifically, it relates to a rubber asphalt mixture and a preparation method thereof. Background technique [0002] The rubber asphalt mixture is firstly processed into rubber powder from waste tires, and then combined according to a certain ratio of thickness and fineness, and a variety of high polymer modifiers are added at the same time, and under the condition of high temperature and sufficient mixing, it is mixed with the matrix Modified asphalt cementitious material formed after asphalt fully melts and expands. [0003] Although rubber asphalt mixture can turn waste tires into treasures and reduce the harm of waste tires to the natural environment, adding rubber powder to asphalt mixture will easily affect the adhesion between asphalt and aggregates, making the rubber asphalt mixture Compressive strength as well as fatigue resistance are affected, therefore, there is still room for imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B2201/50C04B18/22C04B14/14C04B14/28C04B24/32C04B24/161C04B24/06C04B24/42C04B14/4643C04B24/16
Inventor 林和武林生强
Owner 宏辉建材有限公司