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Grouting material, grouting method and road maintenance method

A technology for grouting materials and road maintenance, applied in roads, roads, building insulation materials, etc., can solve the problems of lack of theoretical basis and data support, etc., and achieve the effects of good flow penetration, good slurry fluidity, and fast solidification speed

Active Publication Date: 2014-12-03
SHANGHAI HIGHWAY BRIDGE (GRP) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects that the cement mortar grouting process in the prior art is mainly aimed at waterproof plugging projects, the grouting materials and the grouting process used are all determined by experience, and lack theoretical basis and data support. A grouting material, a grouting method, and a road maintenance and repair method are provided.

Method used

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  • Grouting material, grouting method and road maintenance method
  • Grouting material, grouting method and road maintenance method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Weigh the hard asphalt, Sasobit, LG501 SBS modifier and asphalt masterbatch according to the mass ratio of 82:2:1:15, put them in the colloid mill, grind at 180°C for 40 minutes, and then stir 60 minutes will do.

[0045] The performance index of the grouting material prepared according to the above method is as follows: the penetration of asphalt is 5.6; the softening point of asphalt is 85.2°C; the solubility in trichlorethylene is 99.6%.

Embodiment 2

[0047] The raw materials, preparation process and steps of the grouting material in this embodiment are all the same as in Example 1, the difference is that the LG501 type SBS modifier is replaced by the YH-791 type SBS modifier, and the prepared grouting material The performance indicators are as follows: the penetration of asphalt is 5.5; the softening point of asphalt is 85.3°C; the solubility in trichlorethylene is 99.5%.

Embodiment 3

[0049] The raw materials, preparation process and steps of the grouting material in this example are the same as in Example 1, the difference is: hard asphalt: Sasobit: LG501 SBS modifier: asphalt masterbatch = 77:2:1 :20. The performance indexes of the prepared grouting material are as follows: the penetration of asphalt is 4.5; the softening point of asphalt is 87.8°C; the solubility in trichlorethylene is 99.6%.

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Abstract

The invention discloses a grouting material, a grouting method and a road maintenance method. The grouting material is prepared from the following raw materials: hard asphalt, sasobit, an SBS (styrene butadiene styrene) modifier and asphalt master batch; and control indexes of the grouting material are as follows: the asphalt penetration is smaller than 10, an asphalt softening point is 85 DEG C-93.5 DEG C and the solubility is greater than 99.3% in trichloro ethylene. The grouting material provided by the invention has good mobility, low economic cost and quick freezing rate; while the grouting material is applied to the road maintenance, maintenance is not needed, so that the traffic can be opened immediately. The road maintenance method provided by the invention can be used for effectively evaluating the effects before grouting, during grouting and after grouting, so that the defect that the grouting is judged completely according to the experience of a constructor is overcome.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a grouting material, a grouting method and a road maintenance method. Background technique [0002] The construction of expressways in my country has always followed the design concept of "strong foundation and thin surface". This structure is very easy to form dry shrinkage and temperature shrinkage cracks in the base layer. In addition, the road is a belt-shaped structure, which is more likely to cause transverse cracks in the base layer. Under the action of vehicle load, serious "reflection cracks" appear in the asphalt layer, resulting in damage to the pavement. At present, the methods used to deal with reflective cracks mainly include adding stress absorbing layer, grouting repair (cement grouting), etc., but the results are not ideal. [0003] Grouting refers to the use of air pressure, hydraulic pressure or electrochemical principles to inject grout into the structure. ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02E01C7/26
Inventor 曹亚东蔡明严军陆青清柴冲冲
Owner SHANGHAI HIGHWAY BRIDGE (GRP) CO LTD