Asphalt pavement crevice embedding sealing material and preparation method thereof

A technology of asphalt pavement and petroleum asphalt, which is applied to building insulation materials, roads, roads, etc., can solve the problems of complex sealant composition, difficult to master the production process, high raw material cost, and prevent new cracks, large bonding surface, good fluidity

Inactive Publication Date: 2008-08-06
陕西长大博源公路养护科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention patent with the patent publication number CN 1597827A proposes a production method of road crack sealant. The main components are asphalt, SBS, tackifying resin, synthetic rubber, etc. The composition of the sealant is complex and difficult to master during the production process. The cost of raw materials used is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Taking the production of 100kg of asphalt pavement crack embedding material of the present invention as an example, the raw materials used and their proportioning ratio are as follows:

[0032] Petroleum asphalt 50kg

[0033] Rubber powder 20kg

[0034] Fly ash 22kg

[0035] C 5 Petroleum resin 6kg

[0036] High temperature dry distillation coal tar 2kg

[0037] In this embodiment, the petroleum asphalt adopts No. SK-90 naphthenic road petroleum asphalt grade A produced in South Korea, and the penetration is 80-100 (in 0.1 mm), and the rubber powder adopts the rubber powder ground from waste tires, and the fineness is 60 mesh, produced by Xi'an Changle Reclaimed Rubber Products Co., Ltd.

[0038] Its preparation method is as follows:

[0039] Heat petroleum asphalt to 150°C according to the above weight ratio, add rubber powder, C 5 Stir the petroleum resin and high-temperature dry distillation coal tar evenly, continue to heat up to 200°C, break at this temperat...

Embodiment 2

[0041] Taking the production of 100kg of asphalt pavement crack embedding material of the present invention as an example, the raw materials used and their proportioning ratio are as follows:

[0042] Petroleum asphalt 45kg

[0043] Rubber powder 18kg

[0044] Fly ash 20kg

[0045] C 5 Petroleum resin 14kg

[0046] High temperature dry distillation coal tar 3kg

[0047] In this example, the petroleum asphalt adopts Caltex-90 naphthene road petroleum asphalt grade A produced in Japan, and the penetration is 80-100 (measured in 0.1mm), and the rubber powder adopts the rubber powder ground from waste tires. The degree is 60 mesh, produced by Xi'an Changle Reclaimed Rubber Products Co., Ltd.

[0048] Its preparation method is as follows:

[0049] Heat petroleum asphalt to 140°C according to the above weight ratio, add rubber powder, C 5 Stir the petroleum resin and high-temperature dry distillation coal tar evenly, continue to heat up to 170°C, break at this temperature, cu...

Embodiment 3

[0051] Taking the production of 100kg of asphalt pavement crack embedding material of the present invention as an example, the raw materials used and their proportioning ratio are as follows:

[0052] Petroleum asphalt 60kg

[0053] Rubber powder 10kg

[0054] Fly ash 20kg

[0055] C 5 Petroleum resin 9kg

[0056] High temperature dry distillation coal tar 1kg

[0057] In this embodiment, the petroleum asphalt adopts Karamay-90 naphthenic road petroleum asphalt grade A, and the penetration is 80-100 (calculated as 0.1mm), and the rubber powder adopts the rubber powder ground from waste tires, and the fineness is 60 mesh. Produced by Xi'an Changle Reclaimed Rubber Products Co., Ltd.

[0058] Its preparation method is as follows:

[0059] Heat petroleum asphalt to 160°C according to the above weight ratio, add rubber powder, C 5 Stir the petroleum resin and high-temperature dry distillation coal tar evenly, continue to heat up to 220°C, break at this temperature, cut for ...

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Abstract

Asphalt pavement crack inbuilt-enveloping material and a preparation process are disclosed, wherein the material is prepared by 5%-60% asphaltum, 10%-25% rubber powder, 15%-25% bulking agent, 2%-14% accelerating agent and 1%-3% compatibilizer. The preparation process comprises adding asphaltum in an autoclave, heating up to the temperature of 140-160 DEG C, then adding rubber powder, compatibilizer and accelerating agent, stirring for 20 minutes with 300-1500 rotation / min, elevating the temperature to 170-220 DEG C, shearing 30-45 minutes with a high speed shearer, then adding bulking agent, developing 45-90 minutes in a storage tank, then finally preparing the product of the invention. The product of the invention is used on the crack inbuilt-enveloping, and has large adhesive force with cracks, can effectively prevent from generating new cracks, has favorable flow, is easy to be injected in cracks, has excellent affinity with cracks, and can be fully affused, and has large adhesive surface. The asphalt pavement crack inbuilt-enveloping material is suitable to be used to remand asphalt pavement cracks.

Description

technical field [0001] The invention belongs to the technical field of coagulating pavement for paving roads or airports on site, and in particular relates to the trimming of the pavement upper layer or surface layer; mixing, watering or spreading of pavement materials. Background technique [0002] Cracks are one of the main diseases of asphalt pavement. Due to the influence of traffic load, environmental factors and pavement structure, cracks occur and develop gradually over time. Although the crack itself has little effect on the performance of the asphalt pavement, the crack destroys the integrity and continuity of the pavement structure, and leads to a weakening of the structural strength to a certain extent. , Under the repeated action of a large number of traffic loads, erosion and mud pumping will occur, which will reduce the bearing capacity of the pavement structure and lead to structural damage of the pavement. Therefore, it is of great significance to repair cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K3/34E01C11/10C08L21/00
Inventor 徐培华宗建华马俊
Owner 陕西长大博源公路养护科技有限公司
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