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Preparation method and construction method for quick repair material of pit slot in asphalt concrete pavement

A technology for asphalt concrete and repairing materials, which is applied to the field of quick repairing materials for asphalt concrete pavements and grooves and its preparation, can solve the problems of poor quality of interface materials and uneven quality, and achieves simple construction, no toxic gas, and easy mixing. Effect

Inactive Publication Date: 2013-12-18
甘肃省交通规划勘察设计院股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of road performance evaluation indicators and corresponding test methods for cold-patch asphalt mixture in China, its quality is uneven, and the advantages of cold-patch asphalt mixture cannot be fully utilized, and the quality of interface materials is not strict.
Moreover, during the filling construction process, the cold patching material needs a longer curing time than the hot plate asphalt mixture, so the traffic needs to be closed, which brings pressure to the transportation

Method used

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  • Preparation method and construction method for quick repair material of pit slot in asphalt concrete pavement
  • Preparation method and construction method for quick repair material of pit slot in asphalt concrete pavement
  • Preparation method and construction method for quick repair material of pit slot in asphalt concrete pavement

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preparation example Construction

[0012] The invention is a preparation method of a quick repair material for asphalt concrete pavement potholes and construction method, The preparation method of the rapid patching material for asphalt concrete pavement potholes comprises the following steps:

[0013] (1) The preparation step of the first liquid material: heating the base asphalt to 135 o C. After adding the nano-intercalation agent, mechanically stir evenly, slowly add the solvent and continue stirring for 1-2 hours, until the temperature drops to 40-60 o After C, add aspartic acid ester, and continue stirring for 1 to 2 hours to obtain the first liquid material;

[0014] (2) The preparation step of the second liquid material: heating the base asphalt to 135 o C, slowly add the solvent and continue to stir for 1-2 hours, until the temperature drops to 40-60 o After C, add isocyanate and continue stirring for 1 to 2 hours to obtain the second liquid material;

[0015] (3) Prepare aggregate: the aggregate ...

Embodiment 1

[0027] Weigh 100 parts of base asphalt, 5 parts of organic bentonite, 30 parts of diesel oil and 120 parts of aspartate to prepare the first liquid material. The preparation steps are as follows: heat the base asphalt to 135 o C. After adding the nano-intercalation agent (organic bentonite), stir mechanically evenly, slowly add the solvent and continue stirring for 1-2 hours, until the temperature drops to 40-60 o After C, add aspartic acid ester, and continue stirring for 1 to 2 hours to obtain the first liquid material;

[0028] Take 100 parts of base asphalt by weight, 30 parts of diesel oil and 120 parts of toluene diisocyanate to prepare the second liquid material. The preparation steps are as follows: heat the base asphalt to 135 o C, slowly add the solvent and continue to stir for 1-2 hours, until the temperature drops to 40-60 o After C, add toluene diisocyanate, and continue to stir for 1 to 2 hours to obtain the second liquid material;

[0029] Preparation of aggre...

Embodiment 2

[0045] Weigh 100 parts of base asphalt, 10 parts of organic attapulgite, 20 parts of kerosene and 100 parts of aspartate to prepare the first liquid material. The preparation steps are as follows: heat the base asphalt to 135 o C. After adding the nano-intercalation agent (organic attapulgite), stir mechanically evenly, slowly add the solvent and continue stirring for 1-2 hours, until the temperature drops to 40-60 o After C, add aspartic acid ester, and continue stirring for 1 to 2 hours to obtain the first liquid material;

[0046] Take 100 parts of base asphalt by weight, 20 parts of kerosene and 100 parts of diphenylmethane diisocyanate to prepare the second liquid material. The preparation steps are as follows: heat the base asphalt to 135 o C, after slowly adding the solvent, continue to stir for 1-2 hours until the temperature drops to 40-60 o After C, add diphenylmethane diisocyanate, and continue stirring for 1 to 2 hours to obtain the second liquid material;

[004...

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Abstract

The invention discloses a preparation method and a construction method for a quick repair material of a pit slot in an asphalt concrete pavement. The quick repair material comprises a first liquid material, a second liquid material and aggregates. The quick repair material is characterized in that the material strength can reach more than 70% of the final strength within 30 minutes, and the pit slot can be constructed without closing traffic to achieve the purpose of quickly opening the traffic. Meanwhile, the quick repair material belongs to a normal-temperature mixed material, cannot be influenced by air temperature and can be used in winter. The quick repair material also has the advantages of energy conservation, environmental protection, no toxic gas and the like, and is easy to mix, simple and convenient to construct, good in performance of bonding with an old pavement and suitable for repairing pit slots in asphalt pavements of different grades of roads.

Description

technical field [0001] The invention belongs to the field of petroleum asphalt nano-composite materials, and relates to a rapid repair material for asphalt concrete pavement pits and a preparation method thereof. Background technique [0002] During long-term use, the asphalt pavement will gradually be damaged under the action of natural conditions and vehicle loads, and common diseases such as looseness and potholes will appear. For asphalt pavement potholes, due to the wide area of ​​occurrence, the time for the occurrence of potholes is not the same, and the range of potholes is very irregular. There is sufficient bonding strength between the repairing material and the old road surface to prevent rainwater from penetrating into the road surface and the base layer along the interface, and it is necessary to paint the sticky layer oil on the bottom of the pit and the wall of the groove. The use of hot-mix asphalt mixture for pavement maintenance is suitable for pavement ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B111/72
Inventor 张国宏裴古安樊江李晓民杨小森余小龙冯中良张兴军李丽魏定邦赵静卓李刊陈亮达龙
Owner 甘肃省交通规划勘察设计院股份有限公司
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