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Road surface crack sealing and mending tape and preparation and construction process thereof

A technology for pavement cracks and preparation technology, applied in road repair, roads, roads, etc., can solve the problems of asphalt overflowing the pavement sticking away, cracks cannot be dealt with, and accumulative cost increase, etc., to prevent loosening, strong applicability, and simple operation. Effect

Inactive Publication Date: 2010-09-15
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three disadvantages of this method: 1) The bond is not firm because the cracks are not cleaned, and generally almost all of the joints need to be refilled in the second year; 2) When the temperature is high in summer, the softened asphalt volume expands and the excess asphalt overflows the road surface and is stuck away by traffic; 3) Repeated construction once a year, the cumulative cost increases, and the danger of long-term manual work is greater
Its 27mm circular structure has great limitations, it can only treat cracks of 0.6-2.5cm, and cracks below 0.5cm cannot be treated
The above-mentioned various crack treatment methods have their own advantages and disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment one: the raw material of this pavement crack repair tape and formula thereof are as follows: (1) 100# petroleum asphalt 50-70g; (2) 1301SBS 6-8g; (3) methyl methacrylate 8-10g; (4) Butyl acrylate 10-15g; (5) acrylic acid 5-8g; (6) styrene 1-2g; (7) 800-1000 mesh calcium carbonate 10-15g; (8) softener 3-5g; Ester fiber 2-3g (10) tackifying resin: C5 petroleum resin 3-4g; (11) benzoyl peroxide BPO5.4-6.8g; (12) phenolic antioxidant 10-20mg; (13) mixed solvent : Toluene, 200# solvent oil, toluene: 200# solvent oil=1: 1 weight ratio.

[0044] The above-mentioned benzoyl peroxide (BPO) is 2-2.5% of the amount of the monomer mixture, wherein the monomer mixture is methyl methacrylate, butyl acrylate, acrylic acid and styrene.

Embodiment 2

[0045] Embodiment two: the preparation process steps of this pavement crack sealing repair tape are as follows: (1) below 60 ℃, SBS is dissolved in mixed solvent, and mixed solvent is: toluene: 200# solvent oil=1: 1 weight ratio, is made into About 20% SBS solution. Add two-thirds of the amount of benzoyl peroxide BPO and stir evenly, blow nitrogen to replace the air in the reaction vessel; (2) prepare a monomer mixture and add one-third of the amount of benzoyl peroxide BPO and stir evenly; (3) Start to add the monomer mixture dropwise at 25°C-30°C, and finish adding in about 1-1.5 hours; (4) After adding, raise the temperature to 80-90°C, keep warm for 5-6 hours, and then add antioxidants; (5) ) Add melted petroleum asphalt, tackifying resin C5 petroleum resin and softener, and steam the solvent while raising the temperature; (6) When the temperature rises to 180°C±10°C, add calcium carbonate and polyester fiber and use high-speed shear to disperse Heat up the temperature t...

Embodiment 3

[0046] Embodiment three: the construction process of this pavement crack sealing seam repair is as follows:

[0047] (1) Closed traffic: the single lane is temporarily closed to traffic, the closed time is about 5-30 minutes, and the closed road section is 10-100m long;

[0048] (2) Clean cracks: If there is dust and debris in the crack area, it must be cleaned;

[0049] (3) Paste the seam repair tape: the existing specification is 3cm wide seam repair tape, the width of the cracks to be treated should be within the range of 0-2.0cm, if the cracks exceed the range, other methods must be used to deal with or seal the seam The repair belt is melted and mixed with fine aggregate to fill the cracks, and smaller pits can also be treated by this method;

[0050] (4) Manual compaction: paste the sealing repair tape on the surface of the crack, apply force at the same time, and then cut the sealing repair tape according to the length of the crack paste;

[0051] (5) Open to traffic:...

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Abstract

The invention relates to a road surface crack sealing and mending tape and a preparation and construction process thereof. The road surface crack sealing and mending tape is mainly used for processing thermal contraction cracks and partial structural cracks. The raw material formula of the road surface crack sealing and mending tapeis as follows: 50-70g of petroleum asphalt, 6-8g of 1301SBS, 8-10g of methyl methacrylate, 10-15g of butyl acrylate, 5-8g of acroleic acid, 1-2g of styrene, 10-15g of calcium carbonate, 3-5g of softening agent, 2-3g of polyester fiber, 3-4g of tackifying resin, 0.6-0.88g of benzoyl peroxide (BPO), 10-20mg of antioxidant and 24-32g of mixed solvent. The road surface crack sealing and mending tape has excellent high and low temperature resistance, the glass transition temperature can reach below minus 25 DEG C, the high-temperature flowing temperature can reach more than 180 DEG C, the breaking elongation can reach 300-400%, the peel strength can reach 3-5MPa, the road surface crack sealing and mending tape can perform the autohesion at the temperature above 10 DEG C, and the road surface crack sealing and mending tape and the road surface can be formed into a whole by the rolling compaction of wheels after the crack is bonded, thereby achieving favorable crack sealing effect. The invention can actually mend the road surface crack at a very high efficiency, thereby greatly improving the service performance of the road surface and prolonging the service life of the road surface. The invention can be simultaneously used for fast mending the cracks in asphalt and cement concrete road surfaces, and has the advantages of good mending quality and low cost.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a pavement crack sealing repair tape and its preparation and construction process. This pavement crack sealing repair tape is a new type of road maintenance material that is very convenient for the construction of special treatment of pavement cracks. It mainly deals with temperature shrinkage cracks and some structural cracks. Background technique [0002] Cracking of asphalt pavement during service life is a common problem in all countries in the world, regardless of whether the base layer is flexible or semi-rigid. The hazards of pavement cracks, on the one hand, will cause water to continuously enter the cracks, softening the base layer and even the roadbed, resulting in a decrease in the bearing capacity of the pavement, causing diseases such as pumping, steps, and network cracks, thereby accelerating pavement damage. On the other hand, the development of cracks wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L51/06C08L67/00C08L57/02C08K13/02C08K3/26C08K5/13E01C23/09
Inventor 彭妙娟
Owner SHANGHAI UNIV
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