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Asphalt pavement crack pouring process and pavement crack repair agent

A technology for asphalt pavement and pavement cracks, which is applied in the field of pavement crack repair agents, can solve problems such as increased crack width and depth, unfavorable energy saving, and increased use of materials, so as to improve high temperature stability, avoid secondary damage, and enhance The effect of tensile properties

Inactive Publication Date: 2011-11-23
淄博恒信路面材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the width and depth of pavement cracks increase after the groove is opened, the materials used will also increase accordingly, which is not conducive to energy saving
It can be seen from the above that the above two joint filling methods and materials are limited by temperature, which is not convenient for construction in winter

Method used

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  • Asphalt pavement crack pouring process and pavement crack repair agent
  • Asphalt pavement crack pouring process and pavement crack repair agent
  • Asphalt pavement crack pouring process and pavement crack repair agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare the restorative:

[0029] First, heat the base asphalt to 130-180°C, according to the mass ratio of base asphalt 65-75%, modifier 8-10%, solvent oil 15-20%, plasticizer 3-5%, add SBS modification in sequence Extract the oil and phthalates from the neutralizing agent, furfural, stir and mix for 60-70 minutes, after stirring evenly, use a colloid mill to grind twice to make a repair agent for use.

[0030] To repair the cracks on the pavement, the specific steps are as follows: refer to the attached figure 1 Shown:

[0031] Firstly, pretreatment of pavement cracks: use a hot air gun to dry the moisture in the pavement crack 1, and at the same time clean the dust and dirt inside and on both sides of the pavement crack 1. The hot air gun adopts electric heating, avoiding the traditional gas-fired The temperature of the hot air gun cannot be adjusted, and it is easy to scorch the asphalt pavement with an open flame. The hot air pressure of the hot air gun is 3~4kg...

Embodiment 2

[0036] Restoration agent components and mass ratio are as follows: base asphalt 75-85%, modifier 5-7%, solvent oil 10-15%, plasticizer 2-3%, among them, the modifier is SBR modifier , choose diesel oil or kerosene as solvent oil, and choose phthalate as plasticizer.

[0037] According to the actual situation of the cracks on the pavement, the repair agent is poured into the cracks with a joint filling machine, and the thickness of the repair agent layer 3 after filling and scraping is 1-2 mm.

[0038] A composite fiber cloth 2 is attached to the surface of the filled restoration agent layer 3. The composite fiber cloth 2 adopts a composite structure of non-woven fabric and glass fiber cloth, the lower layer is glass fiber cloth, and the upper layer is non-woven fabric. The double-layer composite structure can be further strengthened Tensile properties of composite fiber cloth. The sealing width of the composite fiber cloth 2 is 7-10 cm.

[0039] Other structures and technolo...

Embodiment 3

[0041] Restoration agent components and mass ratio are as follows: base asphalt 80-90%, modifier 3-5%, solvent oil 3-10%, plasticizer 1-2%, among which, the modifier is PE modifier , The solvent oil is selected from aromatic oil or coal tar, and the plasticizer is selected from phthalates.

[0042] Fill the heated repairing agent into the pavement crack 1 with a joint filling machine, and attach a composite fiber cloth 2 on the surface of the filled repairing agent layer 3, and the composite fiber cloth 2 adopts a double layer of non-woven fabric and polyester fiber cloth Composite structure, the lower layer is polyester fiber cloth, and the upper layer is non-woven fabric, so as to further enhance the tensile performance of the composite fiber cloth. The sealing width of the composite fiber cloth 2 is 3-5 cm.

[0043] Other structures and technological process are with embodiment 1.

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Abstract

The invention provides an asphalt pavement crack pouring process and a pavement crack repair agent. The process is mainly characterized by adopting a composite structure repair mode of bonding a composite fiber cloth on the upper surface of a repair agent layer. The used repair agent is prepared from the following raw materials in percentage by mass: 65-90% of substrate asphalt, 3-10% of modifying agent, 3-20% of solvent oil and 1-5% of plasticizing agent. The process is applicable to the crack repair of an asphalt pavement at (-16)-15 DEG C in autumn and winter, reduces the damage of snowmelt to the pavement in winter, prolongs the service life of the pavement, improves the pavement quality and lowers the maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of traffic road maintenance, and in particular relates to a crack filling process for repairing asphalt pavement cracks and a road crack repairing agent. Background technique [0002] After the asphalt pavement pavement is completed and put into use, pavement cracks will appear due to various factors. Although the initial stage of pavement crack formation has little effect on the use of the pavement, if it is not filled in time, the expansion of pavement cracks will gradually weaken the bearing capacity of the road structure. Stability problems, resulting in network cracks, cracks, pits and other phenomena. The bearing capacity of the road is reduced and the service life of the road is reduced. Therefore, timely potting of pavement cracks is extremely important to prolong the service life of pavement. [0003] In the traditional understanding, it is believed that pavement cracks cause the greatest damage ...

Claims

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Application Information

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IPC IPC(8): E01C23/09E01C23/03C08L95/00C08L53/02C08L9/06C08L23/06C08K5/12
Inventor 郝培文高伟
Owner 淄博恒信路面材料有限公司
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