Phosphate-containing pitch anti-stripping agent and use method thereof

A technology of anti-stripping agent and phosphate salt, which is applied in the field of asphalt anti-stripping agent, can solve the problems of not obvious water damage, cumbersome use methods, environmental pollution, etc., and achieve excellent performance, long-term aging resistance, and reduce water damage Effect

Inactive Publication Date: 2018-10-09
江苏金阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, slaked lime or cement is used to replace part of the mineral powder, the cost is high, and the problem of avoiding water damage is not obvious, the use method is cumbersome, and there is a certain pollution to the environment.

Method used

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  • Phosphate-containing pitch anti-stripping agent and use method thereof
  • Phosphate-containing pitch anti-stripping agent and use method thereof
  • Phosphate-containing pitch anti-stripping agent and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] An asphalt antistripping agent containing phosphate ester salt is composed of sodium lauryl phosphate and octadecyl trimethyl ammonium chloride, and the weight ratio of the two components is 2:3.

[0017] Preparation of sodium dodecyl phosphate: add lauryl alcohol into a three-necked flask equipped with a stirrer, heat to 65°C, add phosphorus pentoxide, heat to 90°C, stir well, react for 2 hours, add hydroxide Sodium is neutralized to obtain sodium dodecyl phosphate, and the mass ratio of lauryl alcohol, phosphorus pentoxide and sodium hydroxide is 1:1:1.

[0018] Octadecyltrimethylammonium chloride was purchased from Anhui Jinao Chemical Co., Ltd.

[0019] The method of using the asphalt anti-stripping agent containing phosphate ester salt: heating the asphalt of AH-70 to 130°C,

[0020] Fully mix with the asphalt anti-stripping agent containing phosphate ester salt, the weight of the anti-stripping agent accounts for 0.2% of the hot asphalt weight.

[0021] Accordin...

Embodiment 2

[0023] The composition of the asphalt antistripping agent containing phosphate ester salt is sodium lauryl phosphate and octadecyltrimethylammonium chloride, and the weight ratio of the two components is 1:1.

[0024] Preparation of sodium dodecyl phosphate: add lauryl alcohol into a three-necked flask equipped with a stirrer, heat to 65°C, add phosphorus pentoxide, heat to 90°C, stir well, react for 2 hours, add hydroxide Sodium is neutralized to obtain sodium dodecyl phosphate, and the mass ratio of lauryl alcohol, phosphorus pentoxide and sodium hydroxide is 1:1:1.

[0025] Octadecyltrimethylammonium chloride was purchased from Anhui Jinao Chemical Co., Ltd.

[0026] The method of using the asphalt anti-stripping agent: heat the asphalt of AH-70 to 135°C,

[0027] Fully mix with the asphalt anti-stripping agent containing phosphate ester salt, the weight of the anti-stripping agent accounts for 0.3% of the hot asphalt weight.

[0028] According to the JTGE-2011 test proce...

Embodiment 3

[0030] The composition of the asphalt antistripping agent containing phosphate ester salt is sodium lauryl phosphate and octadecyltrimethylammonium chloride, and the weight ratio of the two components is 5:6.

[0031] Preparation of sodium dodecyl phosphate: add lauryl alcohol into a three-necked flask equipped with a stirrer, heat to 65°C, add phosphorus pentoxide, heat to 90°C, stir well, react for 2 hours, add hydroxide Sodium is neutralized to obtain sodium dodecyl phosphate, and the mass ratio of lauryl alcohol, phosphorus pentoxide and sodium hydroxide is 1:1:1.

[0032] Octadecyltrimethylammonium chloride was purchased from Anhui Jinao Chemical Co., Ltd.

[0033] The method of using the asphalt anti-stripping agent: heat the asphalt of AH-70 to 140°C,

[0034] Fully mix with the asphalt anti-stripping agent containing phosphate ester salt, the weight of the anti-stripping agent accounts for 0.35% of the hot asphalt weight.

[0035] According to the JTGE-2011 test pr...

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Abstract

The invention discloses an additive of asphalt material for pavement engineering, in particular to a phosphate-containing asphalt anti-stripping agent and a use method thereof. The phosphate-containing asphalt anti-stripping agent is composed of sodium dodecyl phosphate and octadecyl trimethyl ammonium chloride, and the use method comprises the step of uniformly mixing the anti-stripping agent with hot asphalt, wherein the weight of the anti-stripping agent accounts for 0.2% to 0.4% of that of the hot asphalt. When the anti-stripping agent is used for asphalt modification, the long-term agingresistance of the anti-stripping agent is superior to that of traditional amine anti-stripping agents.

Description

technical field [0001] The invention relates to an additive for asphalt materials used in road surface engineering, in particular to an asphalt anti-stripping agent containing phosphate ester salt and its application method. Background technique [0002] At this stage, the water damage problem of highway asphalt pavement has caused loose, peeling and potholes in large areas of asphalt pavement, which obviously shortens the service life of the road. In order to prevent or reduce the water damage of asphalt pavement, the most effective way is to improve the adhesion between asphalt and stone. There are two more effective methods: (1) replace part of the mineral powder with slaked lime or cement; (2) add anti-stripping agent to asphalt. Among them, slaked lime or cement is used to replace part of the mineral powder, the cost is high, and the problem of avoiding water damage is not obvious, the use method is cumbersome, and the environment is also polluted to a certain extent. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B26/26
CPCC04B40/0039C04B24/003C04B24/12C04B26/26
Inventor 肖富荣曹春霞贡月娥卢峰许虎君
Owner 江苏金阳新材料科技有限公司
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