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Flexible micro-surfacing sealing slurry mixture and preparation method thereof

A technology of slurry mixture and micro-surface, which is applied in the field of flexible micro-surface seal layer slurry mixture and its preparation, can solve the problem of limited improvement of micro-surface seal layer crack resistance, cracking and damage of micro-surface seal layer, and difficulty in uniform dispersion and other problems, to achieve excellent low-temperature crack resistance, increase low-temperature crack resistance, and easy dispersion

Active Publication Date: 2010-09-15
HUBEI CHANGJIANG ROAD & BRIDGE HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of cracking and damage of the micro-seal layer, organic fibers such as polypropylene fiber are mainly used to improve the crack resistance of the micro-seal layer, but the organic fiber is easy to agglomerate and difficult to disperse evenly during the mixing process of the slurry mixture. The amount used in the slurry mixture is very limited, so the improvement effect on the crack resistance (especially low temperature crack resistance) of the micro-surface seal layer is limited

Method used

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  • Flexible micro-surfacing sealing slurry mixture and preparation method thereof
  • Flexible micro-surfacing sealing slurry mixture and preparation method thereof
  • Flexible micro-surfacing sealing slurry mixture and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A preparation method of a flexible micro-surface sealing layer slurry mixture, which comprises the steps of:

[0033] 1) Preparation of SBR / FCC oil slurry composite modified emulsified asphalt: 100 parts of base asphalt [penetration at 25°C is 75 (0.1mm)], 5 parts of FCC oil slurry (the mass of aromatic hydrocarbon components in FCC oil slurry content of 60%) and 3 parts of styrene-butadiene rubber (SBR) were mixed at a temperature of 170±5°C, sheared at a high speed for 40 minutes, and then stirred and developed at a temperature of 180±5°C for 2 hours to obtain a composite modified SBR / FCC oil slurry sexual asphalt,

[0034] Pour 2.0 parts of cationic emulsifier (Akzo Nobel E-4875) and 68 parts of water into the container and heat to 65±2°C, stir and adjust the pH value to 2.0 (adjust the pH value of the emulsifier solution with dilute hydrochloric acid=2) , to prepare emulsifier solution;

[0035] Adjust the temperature of the SBR / FCC oil slurry composite modified a...

Embodiment 2

[0044] A preparation method of a flexible micro-surface sealing layer slurry mixture, which comprises the steps of:

[0045] 1) Preparation of SBR / FCC oil slurry composite modified emulsified asphalt: 100 parts of base asphalt [penetration at 25°C is 80 (0.1mm)], 10 parts of FCC oil slurry (the mass of aromatic hydrocarbon components in FCC oil slurry content of 60%) and 3.2 parts of styrene-butadiene rubber (SBR) at a temperature of 170±5°C, mixed at a high speed for 40 minutes, and then stirred and developed at a temperature of 180±5°C for 2 hours, that is, the SBR / FCC oil slurry composite modified sexual asphalt,

[0046] Pour 2.2 parts of cationic emulsifier (Akzo Nobel E-4875) and 68 parts of water into the container and heat to 65±2°C, stir and adjust the pH value to 2.0 (adjust the pH value of the emulsifier solution with dilute hydrochloric acid=2) , to prepare emulsifier solution;

[0047] Adjust the temperature of the SBR / FCC oil slurry composite modified asphalt t...

Embodiment 3

[0056] A preparation method of a flexible micro-surface sealing layer slurry mixture, which comprises the steps of:

[0057] 1) Preparation of SBR / FCC oil slurry composite modified emulsified asphalt: 100 parts of base asphalt [penetration of 90 (0.1mm) at 25°C], 12 parts of FCC oil slurry (the mass of aromatic hydrocarbon components in FCC oil slurry content of 58%) and 3.5 parts of styrene-butadiene rubber (SBR) were mixed at a temperature of 170±5°C, sheared at a high speed for 40 minutes, and then stirred and developed at a temperature of 180±5°C for 2 hours to obtain a composite modified SBR / FCC oil slurry sexual asphalt,

[0058] Pour 1.8 parts of cationic emulsifier (Akzo Nobel E-4875) and 70 parts of water into the container and heat to 65±2°C, stir and adjust the pH value to 2.0 (adjust the pH value of the emulsifier solution with dilute hydrochloric acid=2) , to prepare emulsifier solution;

[0059] Adjust the temperature of the SBR / FCC oil slurry composite modifie...

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Abstract

The invention belongs to the field of bituminous pavement maintenance of roads, and in particular relates to a flexible micro-surfacing sealing slurry mixture and a preparation method thereof. The flexible micro-surfacing sealing slurry mixture is characterized in that the mixture is prepared from the following materials in part by weight: 100 parts of aggregate, 2 to 4 parts of filling materials, 7 to 11 parts of water, 9 to 14 parts of SBR / FCC slurry oil compound modified emulsified asphalt and 1 to 3 parts of inorganic fiber, wherein the SBR / FCC slurry oil compound modified emulsified asphalt is prepared from the following materials in part by weight: 2 to 4 parts of styrene butadiene rubber (SBR), 5 to 15 parts of FCC slurry oil, 100 parts of matrix asphalt, 1.5 to 2.5 parts of cationic emulsifier, and 65 to 75 parts of the water. Asphalt pavement micro-surfacing sealing paved by using the flexible micro-surfacing sealing slurry mixture has high low-temperature anti-cracking performance.

Description

technical field [0001] The invention belongs to the field of road asphalt pavement maintenance, and in particular relates to a flexible micro-surface sealing layer slurry mixture and a preparation method thereof. Background technique [0002] Highway transportation occupies an extremely important position in the national economy and people's lives, and is an important symbol to measure a country's economic strength and modernization level. With the rapid development of economy, my country's road construction is changing with each passing day. By the end of 2008, the total mileage of my country's highways reached 3.68 million kilometers, including 60,300 kilometers of expressways. More than 80% of road construction in our country uses asphalt pavement. Although the design life of the asphalt pavement is 15 years, it will require large-scale repairs and maintenance within 2 to 3 years after completion and as long as 6 to 8 years. The damage forms of asphalt pavement mainly ...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B28/04
Inventor 余剑英张启炎董华均张咏梅柯昌银杨建波王丽静张启斌陈斌况栋梁刘国清刘安刚孙文俊
Owner HUBEI CHANGJIANG ROAD & BRIDGE HLDG
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