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Method for preparing flame-retardant rubber modified emulsified asphalt

A technology of emulsified asphalt and flame-retardant rubber, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as limited thickness, and achieve the effect of accelerating promotion and application

Inactive Publication Date: 2013-08-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Although the modified emulsified asphalt is also used in the adhesive layer, waterproof layer, lower seal layer, middle seal layer, etc. between the pavement, bridge deck, airport pavement, and tunnel pavement structural layers, the emulsified asphalt of this layer Flame retardant is of great significance to the improvement of the flame retardant performance of the entire pavement, because its thickness is extremely limited, generally only a few millimeters

Method used

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  • Method for preparing flame-retardant rubber modified emulsified asphalt
  • Method for preparing flame-retardant rubber modified emulsified asphalt
  • Method for preparing flame-retardant rubber modified emulsified asphalt

Examples

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Effect test

example 1

[0069] Example 1: Preparation of flame-retardant modified emulsified asphalt with a solid content of 65.1%

[0070] The flame-retardant modified emulsified asphalt preparation of the present invention is all calculated as 100 parts according to the total weight of base asphalt:

[0071]

[0072]

[0073] Example 1 preparation method is:

[0074] Heat base asphalt to 130-140°C, inject emulsifier into water at 60-70°C, stir for 1-2 minutes to form emulsion (or called emulsion, soap liquid); then inject organic flame retardant into the stirred emulsion , and continue to stir for 1-2 minutes to become a flame-retardant emulsion containing a certain proportion of emulsifier and organic flame retardant; and then inject the flame-retardant emulsion into the colloid mill, which will account for 80% of the total mass of the required base asphalt, 130 The base asphalt at ~140°C is injected into the colloid mill and the emulsion is sheared and emulsified together. After 1-2 minute...

example 2

[0082] Example 2: Preparation of flame-retardant modified emulsified asphalt with a solid content of 62.2%

[0083] The flame-retardant modified emulsified asphalt preparation of the present invention is calculated according to the total weight of base asphalt being 100 parts:

[0084] Base bitumen 100 parts

[0085] Flame retardant 12 parts

[0086] Compound method of the present invention can adopt following several steps:

[0087] (1) Preparation of rubber powder modified asphalt: first heat the base asphalt in the rubber asphalt reactor to 180-195°C, then screw the rubber powder that meets the design requirements and put it into the reactor, perform mechanical stirring, and develop, Swell for 45min.

[0088] (2) Preparation of emulsion: inject the emulsifier into water at 60-70°C, stir for 1-2 minutes to form an emulsion (or called emulsion, soap liquid); then inject the organic flame retardant into the stirred emulsion, and After continuing to stir for 1-2 minutes, it...

example 3

[0126] Example 3: Preparation of flame retardant modified emulsified asphalt with a solid content of 58.0%

[0127] The flame retardant rubber modified emulsified bitumen preparation of the present invention all calculates as follows according to the total weight of base bitumen being 100 parts:

[0128]

[0129] First, the base asphalt in the rubber asphalt reactor is heated to 180-195°C, and then the rubber powder that meets the design requirements is screwed into the reactor, stirred mechanically, and developed and swelled for 45 minutes. Next, inject the emulsifier into water at 60-70°C, stir for 1-2 minutes to form an emulsion (or called emulsion, soap liquid); then inject the organic flame retardant into the stirred emulsion, and continue stirring for 1-2 minutes. After 2 minutes, it becomes a flame retardant emulsion containing a certain proportion of emulsifier and organic flame retardant; finally, after the flame retardant emulsion is injected into the colloid mill...

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Abstract

The invention discloses a flame-retardant rubber powder modified emulsified asphalt, which is characterized by comprising the following components in parts by weight: 100 parts of matrix asphalt, 15-25 parts of rubber powder, 10-20 parts of a fire retardant, 1-3 parts of an emulsifier and 50-100 parts of water. According to the invention, the rubber powder and the flame retardant are used for comprehensive modification so that the physical, chemical and mechanical properties of the emulsified asphalt are guaranteed, and the low-temperature anti-cracking ability and flame retarding ability of the emulsified asphalt also are greatly improved, and as a result, the emulsified asphalt can be widely applied to cold mixed and cold laid thin-layer pavements of fire-prone road sections such as a tunnel and the like, and also can be applied to a waterproof adhesive layer paved on the bridge floor.

Description

technical field [0001] The invention belongs to the technical field of asphalt material production using room-temperature asphalt mixture for tunnel pavement, pavement, bridge deck and airport pavement of expressways and urban roads, and specifically relates to indoor mix ratio design of different materials and on-site preparation and production method. Background technique [0002] 1. Waste tire rubber powder and its application in road [0003] Waste tires have been replaced or eliminated and have lost their use value as tires. They are extremely heat-resistant, anti-biological, and mechanically resistant, and are difficult to degrade. They will not disappear naturally for decades. As a special kind of solid waste, it is different from many municipal wastes in its treatment because it is neither easy to degrade naturally nor be buried on site. Long-term open-air stacking not only takes up a lot of land, but also easily breeds mosquitoes to spread diseases and cause fires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L7/00C08L17/00C08K5/521C08J3/03C04B26/26
Inventor 黄晓明李志栋
Owner SOUTHEAST UNIV
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