Preparation method of crumb rubber modified asphalt with high fatigue resistance and crack resistance

A modified asphalt, anti-cracking technology, applied to building components, building insulation materials, buildings, etc., can solve the problems of insufficient bonding strength between rubber powder particles and asphalt, unsuitable for static storage, poor storage stability, etc., to reduce the consumption of asphalt , Emission reduction, and the effect of extending road life

Inactive Publication Date: 2019-02-15
湖北津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

[0004] However, waste rubber powder is an inert material, and there are few available groups on the surface of the rubber powder. Under the action of high temperature and long-term shearing with asphalt, there are the following deficiencies: 1. The bonding strength between rubber powder particles and asphalt is not enough. The rubber powder particles in the road built are easy to peel off from the asphalt, the road quality is poor, and the service life is short; 2. The storage stability is very poor, so it is not suitable for static storage

Method used

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  • Preparation method of crumb rubber modified asphalt with high fatigue resistance and crack resistance
  • Preparation method of crumb rubber modified asphalt with high fatigue resistance and crack resistance

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Experimental program
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Effect test

Embodiment 1

[0031] A rubber powder modified asphalt with high resistance to fatigue and cracking is prepared through the following steps:

[0032] S1. Weigh the following materials by weight: 10 parts of 10-30 mesh waste bias tire rubber powder, 0.6 parts of pentaerythritol tetramercaptoacetate, 60 parts of 70#A grade road petroleum asphalt, slow-cracking and slow-setting cationic asphalt emulsifier 1 part of BH-MM, 3 parts of rosin glyceride, 80 parts of glycerin;

[0033] S2, completely immerse the waste bias tire rubber powder in glycerin, add potassium perborate with 3% initial weight of glycerin, and add water with 50% initial weight of glycerin to the glycerin with potassium perborate dropwise within 0.5h under the condition of 30°C In the solution, the process was continuously stirred at a speed of 20rpm, and the 30-60-mesh granular substance obtained was ground under wet conditions;

[0034]S3, configuring the slow-cracking and slow-setting cationic asphalt emulsifier BH-MM into ...

Embodiment 2

[0037] A rubber powder modified asphalt with high resistance to fatigue and cracking is prepared through the following steps:

[0038] S1. Weigh the following materials by weight: 10 parts of 10-30 mesh waste bias tire rubber powder, 0.6 part of pentaerythritol tetramercaptoacetate, 60 parts of 70#A grade road petroleum asphalt, and 1 part of lignoamine cationic asphalt emulsifier , 3 parts of rosin glyceride, 80 parts of glycerin;

[0039] S2, completely immerse the waste bias tire rubber powder in glycerin, add potassium perborate with 3% initial weight of glycerin, and add water with 50% initial weight of glycerin to the glycerin with potassium perborate dropwise within 0.5h under the condition of 30°C In the solution, the process was continuously stirred at a speed of 20rpm, and the 30-60-mesh granular substance obtained was ground under wet conditions;

[0040] S3, configuring the lignin amine cationic asphalt emulsifier into a solution with a mass percentage of 4%, addi...

Embodiment 3

[0043] A rubber powder modified asphalt with high resistance to fatigue and cracking is prepared through the following steps:

[0044] S1, take the following materials by weight: 30 parts of 10-30 mesh waste radial tire rubber powder, 0.6 part of pentaerythritol tetramercapto butyrate, 90 parts of 70#A grade road petroleum asphalt, 0.6 part of lignoamine cationic asphalt emulsifier, 5 parts of isobutyl stearate, 80 parts of glycerin;

[0045] S2, completely immerse the waste radial tire rubber powder in glycerin, add potassium perborate with an initial weight of 6% of glycerin, and add water with an initial weight of 50% of glycerin to the glycerin solution of potassium perborate dropwise within 1 hour at 25°C , during this process, stir continuously at a speed of 30rpm, and grind the 30-60-mesh granular substance obtained under wet conditions;

[0046] S3, configuring the lignoamine cationic asphalt emulsifier into a solution with a mass percentage of 1%, adding the granular...

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Abstract

The invention belongs to the technical field of modified asphalt and particularly relates to a preparation method of crumb rubber modified asphalt with high fatigue resistance and crack resistance. Waste tire crumb rubber is subjected to surface modification with potassium perborate and used for modifying base asphalt together with a plasticizer, an aging resister and an emulsifier, in the prepared crumb rubber modified asphalt with high fatigue resistance and crack resistance, modified crumb rubber has good binding capacity with asphalt, crumb rubber particles are not prone to separation fromthe crumb rubber modified asphalt, the asphalt has excellent high-temperature softening resistance and low-temperature crack resistance, and service life of a road can be prolonged effectively.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, in particular to a preparation method of rubber powder modified asphalt with high fatigue resistance and crack resistance. Background technique [0002] With the improvement of road construction level and the increasing traffic volume, higher requirements are put forward for the road surface function. The modification of asphalt by polymer or rubber has become an effective way and development to improve the performance of road petroleum asphalt. direction. [0003] Waste tires contain various polymers such as styrene-butadiene rubber and natural rubber, as well as a large amount of carbon black, antioxidants, fillers, treatment oil, etc. Therefore, waste rubber can be added to asphalt after granulation, and the product obtained by mixing , called rubber asphalt. The rubber powder swells in the asphalt, which increases the adhesion of the asphalt and makes the oil film thicker. The over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L93/04C08L33/02C08K5/053C08K5/42
CPCC08K2201/014C08L95/00C08L2205/03C08L2205/035C08L2207/24C08L19/003C08L93/04C08K5/053C08K5/42C08L33/02
Inventor 宗博杜新国
Owner 湖北津泰环保科技有限公司
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