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Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application

A technology of surfactant and warm-mix asphalt, which is applied in the fields of climate change adaptation, building insulation materials, building components, etc., can solve problems such as the inability to completely avoid harmful gas emissions, unfavorable large-scale promotion, and complex composition ratios. Improvement of conditions, reduction of damage to workers' health, effects of less ingredients

Inactive Publication Date: 2011-11-09
SHANGHAI YITAI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, in order to improve the properties of warm-mix asphalt, it is generally necessary to add warm-mix asphalt additives with complex composition ratios and high costs to warm-mix asphalt, which is not conducive to large-scale industrialization. Some additives often It also contains toxic amines and other substances, so it is still impossible to completely avoid the emission of harmful gases during the asphalt laying process

Method used

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  • Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application
  • Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Preparation of polyvinyl acetal:

[0041] The number average molecular weight of 100 parts by weight is 1×10 4~5×10 4 Polyvinyl acetate, 200 parts by weight of acetic acid and 70 parts by weight of water are mixed and heated to 60 ° C, stirred until completely dissolved, and then 60 parts by weight of formaldehyde solution is added (based on the weight of the formaldehyde solution, the weight percentage of formaldehyde is 30%) and 4 parts by weight of sulfuric acid, react at 80°C for 24 hours, then neutralize with ammonium acetate, add water to precipitate polyvinyl acetal, wash and dry to obtain polyvinyl acetal product.

[0042] 2. Preparation of anti-stripping warm mix asphalt additive:

[0043] 1) dissolving polyvinyl acetal with water as a solvent to form a polyvinyl acetal mixed solution with a solid content of 20% (percentage by weight);

[0044] 2) using water as a solvent to prepare polyacrylamide into a polyacrylamide mixture with a solid content of 10%...

Embodiment 2

[0060] 1. Preparation of polyvinyl acetal:

[0061] The number average molecular weight of 80 parts by weight is 1×10 4 ~5×10 4 Polyvinyl acetate, 250 parts by weight of acetic acid and 100 parts by weight of water are mixed and heated to 80°C, stirred until completely dissolved, and then 80 parts by weight of formaldehyde solution is added (based on the weight of the formaldehyde solution, the weight percentage of formaldehyde is 50%) and 6 parts by weight of sulfuric acid, react at 60°C for 30 hours, then neutralize with ammonium acetate, add water to precipitate polyvinyl acetal, wash and dry to obtain polyvinyl acetal product.

[0062] 2. Preparation of anti-stripping warm mix asphalt additive:

[0063] 1) dissolving polyvinyl acetal with water as a solvent to form a polyvinyl acetal mixed solution with a solid content of 50% (weight percent);

[0064] 2) Polyacrylamide is prepared into a polyacrylamide mixed solution with a solid content of 15% (weight percent);

[0...

Embodiment 3

[0074] 1. Preparation of polyvinyl acetal:

[0075] The number average molecular weight of 120 parts by weight is 1×10 4 ~5×10 4 Polyvinyl acetate, 150 parts by weight of acetic acid and 50 parts by weight of water are mixed and heated to 70°C, stirred until completely dissolved, and then 50 parts by weight of formaldehyde solution (based on the weight of the formaldehyde solution, the weight percentage of formaldehyde is 40%) and 3 parts by weight of sulfuric acid, react at 70°C for 20 hours, then neutralize with ammonium acetate, add water to precipitate polyvinyl acetal, wash and dry to obtain polyvinyl acetal product.

[0076] 2. Preparation of anti-stripping warm mix asphalt additive:

[0077] 1) dissolving polyvinyl acetal in water as a solvent to form a polyvinyl acetal solution with a solid content of 20% (percentage by weight);

[0078] 2) polyacrylamide is prepared into a polyacrylamide mixed solution with a solid content of 5% (weight percent);

[0079] 3) Add ...

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Abstract

The invention, belonging to the field of construction engineering, relates to an anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application. The anti-stripping warm mix asphalt additive agent disclosed in the invention comprises polyvinyl acetal, polyacrylamide, fatty acid anhydride ester surfactant, polyoxyethylene acid ester surfactant and water. The warm mix asphalt additive agent disclosed in the invention can enhance the bonding of stone, rock flour and asphalt, so as to get the purposes of high strength and preventing stripping. The requirements of the technical characteristics of the warm mix asphalt is realized by spraying the additive agent with the content of 5-6% of the weight of the asphalt when the temperature of the asphalt reaches 120-130 DEG C, and then carrying out blending and operation as routine asphalt. The warm mix asphalt additive agent disclosed in the invention has no substances which are harmful to the human body and environment, with being environmentally friendly, and is an excellent product with energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to an anti-stripping warm-mix asphalt additive composed of surfactants and its preparation and application. Background technique [0002] At present, most roads in China adopt the traditional hot-mix asphalt process, which is constructed by mixing viscous asphalt with small stones, stone chips, and stone powder at about 180°C. [0003] Hot mix asphalt mixture is favored by many countries in the world for its well-known good performance in expressway construction. So far, hot mix asphalt mixture is the most widely used mixture with the best road performance. However, it also exposes many irreconcilable defects, which are mainly manifested in the following aspects: (1) high temperature during mixing, serious heat loss, and high energy consumption; (2) high temperature mixing and construction conditions accelerate mixing (2) The short construction season causes a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L29/14C08L33/26C08L71/00C08K5/10C08K5/11
CPCY02A30/30
Inventor 郑金标余赟靓
Owner SHANGHAI YITAI ENERGY TECH
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