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Rubber powder modified stone matrix asphalt and preparation method thereof

A technology of modified asphalt and mastic, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of insufficient bonding strength, poor road quality, short service life, etc., and achieve good road quality. , The effect of reducing maintenance costs and good bonding ability

Active Publication Date: 2018-11-30
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 the asphalt, the bonding strength between the rubber powder particles and the asphalt is not enough, and the rubber powder in the paved road Particles are easily stripped from the asphalt, poor road quality and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A rubber powder modified asphalt prepared through the following steps:

[0043] 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 90# road petroleum asphalt, slow-cracking and slow-setting cationic asphalt emulsifier BH- 1 part of MM, 3 parts of rosin glyceride;

[0044] S2. Completely immerse the waste tire rubber powder in water, add potassium ferrate with 1% of the total weight of water, keep stirring and soaking at a speed of 20 rpm at 30°C for 1 hour, and then grind the obtained 30-80 mesh particles under wet conditions shape substance;

[0045] S3, melt 90# road petroleum asphalt at 140-150°C, heat up to 170-190°C, add pre-heated rosin glyceride, stir evenly, add the granular substance obtained in step S2, and Stir at 180-190°C for 1 hour to prepare waste rubber powder composite modified asphalt with high fatigue resistance and crack resistance.

Embodiment 2

[0047] A rubber powder modified asphalt prepared through the following steps:

[0048] S1, take 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 130# road petroleum asphalt, 3 parts of rosin glyceride;

[0049] S2. Completely immerse the waste bias tire rubber powder in water, add potassium ferrate with 1% of the total weight of water, and keep stirring and soaking at a speed of 20 rpm at 30°C for 1 hour, then grind the obtained 30-80% under wet conditions. Particulate matter of interest;

[0050] S3, melt 130# road petroleum asphalt at 140-150°C, heat up to 170-190°C, add rosin glycerides that are preheated to liquid state, stir well, add pentaerythritol tetramercaptoacetate and step S2 The obtained granular material was stirred at 180-190° C. for 1 hour to obtain rubber powder modified asphalt.

Embodiment 3

[0052] A rubber powder modified asphalt prepared through the following steps:

[0053] S1, weigh 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# road petroleum asphalt, 4 parts of isobutyl stearate;

[0054] S2. Completely immerse the waste radial tire rubber powder in water, add potassium ferrate of 1% of the total weight of water, and keep stirring and soaking at a speed of 30rpm at 25°C for 0.5h, then grind the obtained 30-80% under wet conditions. Particulate matter of interest;

[0055] S3, melt 70# road petroleum asphalt at 140-150°C, heat up to 170-190°C, add isobutyl stearate preheated to liquid state, stir well, add pentaerythritol tetramercaptobutyrate and the granular substance obtained in step S2, and stirred at 180-190° C. for 2 hours to obtain rubber powder modified asphalt.

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Abstract

The invention belongs to the technical field of modified asphalt, and particularly relates to a rubber powder modified stone matrix asphalt and a preparation method thereof, wherein the rubber powdermodified stone matrix asphalt comprises, by weight, 10-25 parts of rubber powder modified asphalt, 1-3 parts of lignin fiber, 4-8 parts of aramid short fiber, and 100-150 parts of crushed stone. According to the present invention, the rubber powder modified asphalt is prepared by modifying waste tire rubber powder, and the modified powder has strong adhesion to the aggregate; and the rubber powdermodified stone matrix asphalt has characteristics of strong load-deformation resistance, high-temperature rutting resistance and strong water damage resistance.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, in particular to a rubber powder modified asphalt mastic macadam mixture and a preparation method thereof. Background technique [0002] Asphalt mixture is the material used to build asphalt pavement, and asphalt pavement refers to various types of road surfaces that are paved with road asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving aggregates to resist road damage from driving and natural factors, making the road smooth, less dusty, impermeable and durable. Therefore, asphalt pavement is the most widely used high-grade pavement in road construction. With the development of the transportation industry, overloading and channelized traffic are becoming more and more serious, and the traffic volume is increasing rapidly, which puts forward higher requirements for asphalt pavement, such as anti-rutting performance and anti-cracking performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/02C04B18/22
CPCC04B20/023C04B26/26C04B40/0039C04B2111/0075C04B18/26C04B16/0691C04B14/14C04B18/22C04B24/16C04B24/34C04B24/085C04B14/28C04B24/36C04B2103/0068Y02W30/91
Inventor 宗博宗明亚刘力
Owner 湖北津泰环保科技有限公司
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