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Emulsified asphalt with solid content higher than 70% and preparation method thereof

A technology of emulsified asphalt and solid content, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor asphalt performance, long time for demulsification, poor performance, etc., and achieve good quality and overcome slow demulsification speed. Effect

Inactive Publication Date: 2019-10-25
NANJING LUYIDA TRAFFIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the solid content of domestic emulsified asphalt is 45% to 63%, and the emulsified asphalt is generally 70# asphalt, modified emulsified asphalt. Poor performance and other disadvantages lead to long time for demulsification and poor performance in the construction stage, so it is not suitable for use in road maintenance

Method used

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  • Emulsified asphalt with solid content higher than 70% and preparation method thereof
  • Emulsified asphalt with solid content higher than 70% and preparation method thereof
  • Emulsified asphalt with solid content higher than 70% and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take the production of 500g high-solid content emulsified asphalt as an example, its raw material composition is:

[0019] No. 50 bitumen 370g distilled water: 120g compound modified by SBS and SBR

[0020] Emulsifying agent: 7.5g, described emulsifying agent is the mixture of lauryl ammonium chloride and cetyltrimethylammonium bromide, and its proportioning is 7.5:2.5, waterproof preservation, shake up before use.

[0021] Stabilizer: 2.5g, described stabilizer is cellulose, waterproof and sealed preservation, dissolves in water during use.

[0022] Its preparation method is as follows:

[0023] (1) Take No. 50 asphalt and heat it to 160°C to 180°C, then add linear SBS modifier and SBR modifier. Cut on the cutting machine, first cut at a speed of 2500r / min for 5 minutes, and then cut at a speed of 4000r / min for 80 minutes to obtain SBR and SBS composite modified asphalt:

[0024] (2) Pour the emulsifier into the steamed pomegranate water at 25°C, stir evenly, add an...

Embodiment 2

[0030] Take the production of 500g high-solid content emulsified asphalt as an example, its raw material composition is:

[0031] No. 50 bitumen modified by SBS: 368g

[0032] Water: 119.5g

[0033] Emulsifying agent: 10g, described emulsifying agent is the mixture of lauryl ammonium chloride and cetyl trimethyl ammonium bromide

[0034] Mixture, its ratio is 7:3, waterproof storage, shake well before use.

[0035] Stabilizer: 2.5g, described stabilizer is cellulose, waterproof and sealed preservation, dissolves in water during use.

[0036] Its preparation method is as follows:

[0037] (1) Take No. 50 asphalt and heat it to 160°C to 180°C, then add linear SBS modifier and SBR modifier. Cut on the cutting machine, first cut at a speed of 2000r / min for 10 minutes, and then cut at a speed of 4000r / min for 80 minutes to obtain SBR and SBS composite modified asphalt:

[0038] (2) Pour the emulsifier into the steamed pomegranate water at 55°C, stir evenly, add an appropriate ...

Embodiment 3

[0044] Take the production of 500g high-solid content emulsified asphalt as an example, its raw material composition is:

[0045] No. 50 bitumen modified by SBS: 365g

[0046] Water: 110g

[0047] Emulsifying agent: 7.5g, described emulsifying agent is the mixture of lauryl ammonium chloride and cetyltrimethylammonium bromide, and its proportioning is 7.5:2.5, waterproof preservation, shake up before use.

[0048] Stabilizer: 2g, described stabilizer is cellulose, and waterproof seal preserves, and dissolves in water during use.

[0049] Propolis: 15.5g

[0050] Its preparation method is as follows:

[0051] (1) Take No. 50 asphalt and heat it to 160°C to 180°C, then add linear SBS modifier and SBR modifier. Cut on the cutting machine, first cut at a speed of 2500r / min for 10 minutes, and then cut at a speed of 4000r / min for 75 minutes to obtain SBR and SBS composite modified asphalt:

[0052] (2) Pour the emulsifier into the steamed pomegranate water at 20°C, stir evenly...

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Abstract

The invention discloses modified emulsified asphalt with the high solid content higher than 67% and a preparation method thereof, and belongs to the technical field of emulsified asphalt. The emulsified asphalt is prepared from the raw materials in parts by mass: 67-75 parts of SBS and SBR compound modified 50# asphalt, 1-2 parts of a cationic emulsifier, 25-33 parts of distilled water and 0.03-0.3 part of a stabilizer, wherein the emulsifier is a mixture of dodecyl ammonium chloride and cetyl trimethyl ammonium bromide, the ratio of the dodecyl ammonium chloride to the cetyl trimethyl ammonium bromide is 7.5:2.5, and the stabilizer is cellulose. The solid content of the obtained emulsified asphalt is at least 67%, the evaporated residue needle penetration under 25 DEG C is 35-90 (0.1mm),the softening point is 65-75 DEG C, the viscosity is moderate, the stability is excellent, and the effect is good when the emulsified asphalt is applied to road construction.

Description

technical field [0001] The invention belongs to the technical field of emulsified asphalt, and in particular relates to an emulsified asphalt with a solid content higher than 70% and a preparation method thereof. Background technique [0002] In recent years, emulsified asphalt has attracted the attention of road workers because of its advantages of convenient construction and environmental protection, and more and more researches on emulsified asphalt. Emulsified asphalt is a liquid asphalt produced by asphalt, water, emulsifier, stabilizer, etc. through mechanical stirring and chemical stabilization (emulsification). At present, the solid content of domestic emulsified asphalt is 45% to 63%, and the emulsified asphalt is generally 70# asphalt, modified emulsified asphalt. Poor performance and other disadvantages lead to long time for demulsification and poor performance in the construction stage, so it is not suitable for use in road maintenance. [0003] Increasing the ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L1/02
CPCC08L95/00C08L2205/035C08L53/02C08L9/06C08L1/02
Inventor 于新李伟卞加前虞浩孙超
Owner NANJING LUYIDA TRAFFIC TECH CO LTD
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