Preparation method of high-solid-content emulsified SBS (styrene-butadiene-styrene) modified asphalt and application of modified asphalt in micro-surfacing

A technology of modified asphalt and solid content, applied in building components, building insulation materials, buildings, etc., can solve the problems of high temperature performance of the mixture, the impact of wear resistance, increased transportation costs, and slow early strength of the mixture, etc., to achieve solid The effects of high content, low production and transportation costs, and fast strength growth

Inactive Publication Date: 2015-03-04
SHANDONG DASHAN ROAD & BRIDGE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The micro-surfacing in the prior art is mixed with emulsified SBS modified asphalt with low solid content or emulsified SBR modified asphalt with low solid content. In order to ensure that the mixing time of the slurry mixture meets the requirements, it is necessary to increase The amount of emulsifier will lead to a slow increase in the early strength of the mixture, which will have varying degrees of impact on the high temperature performance and wear resistance of the mixture
Another disadvantage of using low solid emulsified asphalt is the increase in transportation costs

Method used

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  • Preparation method of high-solid-content emulsified SBS (styrene-butadiene-styrene) modified asphalt and application of modified asphalt in micro-surfacing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of emulsified SBS modified asphalt:

[0024] The asphalt containing 4.0% SBS modifier is heated to 160-180°C, the slow-cracking and fast-setting emulsifier is mixed with water to form a soap solution, and the temperature is adjusted to 45-65°C, according to 80 parts of asphalt and 20 parts of soap (KZW-801 2.7 parts of emulsifier, 17.3 parts of water, adding acid to adjust the pH value of the soap liquid to 2.0) at the same time into the colloid mill, high-speed grinding and shearing, cooling down to below 80 ° C through the heat exchanger, and the solid content of 80 can be produced. % high concentration modified emulsified asphalt products.

[0025] The preparation method of emulsified modified asphalt micro-surface, comprises the following steps:

[0026] 1) Take 100kg of stone meeting the MS-3 type gradation, add 2kg of 42.5 cement to the stone and mix evenly, then add 11.5kg of water for pre-mixing;

[0027] 2) Add 8.8kg of emulsified SBS modified asp...

Embodiment 2

[0030] Preparation of emulsified SBS modified asphalt:

[0031] The asphalt containing 4.5% SBS modifier is heated to 160-180°C, the slow-cracking and fast-setting emulsifier is mixed with water to form a soap solution, and the temperature is adjusted to 45-65°C, according to 76 parts of asphalt and 24 parts of soap (HSRH emulsifier 2.5 parts, water 21.5 parts, add acid to adjust the pH value of the soap liquid to 2.0) at the same time into the colloid mill, high-speed grinding and shearing, after the heat exchanger cools down to below 80°C, the solid content of 76% can be produced High concentration modified emulsified asphalt product.

[0032] The preparation method of emulsified modified asphalt micro-surface, comprises the following steps:

[0033] 1) Take 100kg of stone meeting the MS-3 type gradation, add 2kg of 42.5 cement to the stone and mix evenly, then add 11.0kg of water for pre-mixing;

[0034] 2) Add 9.2kg of emulsified SBS modified asphalt with a solid content...

Embodiment 3

[0037] Preparation of emulsified SBS modified asphalt:

[0038] The asphalt containing 5.0% SBS modifier is heated to 160-180°C, the slow-cracking and fast-setting emulsifier is mixed with water to form a soap solution, and the temperature is adjusted to 45-65°C, according to 73 parts of asphalt and 27 parts of soap (CMK-30 2.4 parts of emulsifier, 24.6 parts of water, adding acid to adjust the pH value of the soap liquid to 2.0) at the same time into the colloid mill, high-speed grinding and shearing, cooling down to below 80 °C through the heat exchanger, and the solid content of 73 can be produced. % high concentration modified emulsified asphalt products.

[0039] The preparation method of emulsified modified asphalt micro-surface, comprises the following steps:

[0040] 1) Take 100kg of stone meeting the MS-3 type gradation, add 2kg of 42.5 cement to the stone and mix evenly, then add 11.0kg of water for pre-mixing;

[0041] 2) Add 9.3kg of emulsified SBS modified aspha...

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Abstract

The invention discloses a preparation method of high-solid-content emulsified SBS (styrene-butadiene-styrene) modified asphalt and an application of the modified asphalt in micro-surfacing. The preparation method of the emulsified SBS modified asphalt comprises the steps as follows: the SBS modified asphalt is heated to 170-190 DEG C, liquid soap is prepared by a slow-breaking and quick-setting asphalt emulsifier and water, temperature is adjusted to 45-65 DEG C, acid is adjusted to 1.5-2.5, 65-80 parts by weight of asphalt and 20-30 parts by weight of liquid soap are added into a colloid mill simultaneously for high-speed grinding and shearing, then the temperature is reduced to be lower than 80 DEG C through a heat exchanger, and a high-concentration modified emulsified asphalt product can be produced. The prepared emulsified SBS modified asphalt has the characteristics of high solid content and low production and transportation cost; and a mixed micro-surfacing thin pulp mixture has the characteristics that mixing time meets requirements, the film forming performance of the asphalt on the surface of a stone is good, the high-temperature property and wear resisting property are excellent, early strength is formed quickly, and a pavement can carry traffic earlier.

Description

technical field [0001] The invention relates to the technical field of preventive maintenance of roads at normal temperature, in particular to a preparation method of emulsified SBS modified asphalt with high solid content and its application in micro-surfacing. Background technique [0002] Micro-surfacing can complete many repair functions such as road surface function restoration, sealing and waterproofing, rut filling, and appearance improvement; compared with hot asphalt thin-layer overlays, it has the advantages of fast and efficient construction and saving road maintenance and repair costs; Under good conditions, the service life of the micro-surface can be as long as 3 years or more. The application of micrometers on municipal roads, high-grade highways, and cement concrete bridge surfaces is becoming more and more common. [0003] The micro-surfacing in the prior art is mixed with emulsified SBS modified asphalt with low solid content or emulsified SBR modified asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L95/00C08L53/02C04B26/26C04B24/16C04B22/14
Inventor 陈际江杨树人樊伟张超扈利东
Owner SHANDONG DASHAN ROAD & BRIDGE ENG
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