Gap filling adhesive for maintaining asphalt concrete pavement and preparing method

A technology for asphalt concrete and joint filling glue, applied in the direction of asphalt material adhesive, adhesive, adhesive type, etc., can solve the problems of low temperature brittleness, poor fluidity, difficult construction and high frequency

Inactive Publication Date: 2016-10-26
HANGZHOU HAIHE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are many kinds of commercial joint grouting adhesives. In actual use, they often face problems such as bonding performance, permeability, low-temperature brittleness, and poor fluidity, which cause repeated lesions in cracks, short maintenance periods, and high frequency. Maintenance Costs and Safety Risks
The results of pavement coring inspection found that the joint glue showed a superficial filling state at the lesion, did not penetrate deep into the crack surface, and lacked good adhesion to the asphalt mixture on both sides of the crack

Method used

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  • Gap filling adhesive for maintaining asphalt concrete pavement and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The proportioning raw materials are: SBS modified asphalt: 50%; toughening agent: 2%; surfactant: 3%, coupling agent: 2%; filler: 43%.

[0032] 1) Pump 500kg of liquid SBS modified asphalt at 150~180℃ into a 1200L dispersion tank,

[0033] 2) Open the dispersion slurry and add 20kg of toughening agent (liquid polysulfide rubber JLY-124) at the same time, and then adjust the speed to high speed (600 rpm) for 30 minutes of heat preservation and dispersion.

[0034] 3) Then add cationic surfactant (cetyltrimethylammonium chloride 1631) 30kg, silane coupling agent (γ-aminopropyltriethoxysilane KH550) 20kg and filler nano calcium carbonate 430kg, At 150-180°C; continue to disperse at 600 rpm for 30 minutes to obtain a viscous and uniform black liquid, discharge, cool and solidify, and pack for storage.

Embodiment 2

[0036] The proportioning raw materials are: SBS modified asphalt: 40%; toughening agent: 5%; surfactant: 1%, coupling agent: 4%; filler: 50%. .

[0037] 1) Pump 400kg of liquid SBS modified asphalt at 150-180°C into a 1200L dispersion tank,

[0038] 2) Open the dispersion slurry and add 50kg of toughening agent (liquid polysulfide rubber JLY-124) at the same time, and then adjust the speed to high speed (800 rpm) for 60 minutes of heat preservation and dispersion.

[0039] 3) Add cationic surfactant (hexadecyltrimethylammonium chloride 1631) 10kg, silane coupling agent (γ-aminopropyltriethoxysilane KH550) 40kg and filler nano-calcium carbonate 500kg in sequence, At 150-180°C; continue to disperse at 800 rpm for 30 minutes to obtain a viscous and uniform black liquid, discharge, cool and solidify, and pack for storage.

Embodiment 3

[0041] The proportioning raw materials are: SBS modified asphalt: 45%; toughening agent: 3.5%; surfactant: 2%, coupling agent: 3%; filler: 46.5%.

[0042] 1) Put 20kg of cationic surfactant (hexadecyltrimethylammonium chloride 1631), 30kg of silane coupling agent (γ-aminopropyltriethoxysilane KH550), and 465kg of inorganic filler nano-calcium carbonate into the modified Surfactant fillers can be obtained by performing high-speed kneading modification pretreatment at 100-120°C in permanent equipment (equipment for modification of inorganic fillers, which can be purchased in the market);

[0043] 2) Pump 450kg of liquid SBS modified asphalt at 150-180°C into a 1200L dispersion tank,

[0044] 3) Open the dispersion slurry and add 35kg of toughening agent (liquid polysulfide rubber JLY-124) at the same time, and then adjust the speed to high speed (700 rpm) for 45 minutes of heat preservation and dispersion.

[0045] 4) Add 515kg of the above-mentioned surface-active filler, and ...

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Abstract

The invention discloses a gap filling adhesive for maintaining an asphalt concrete pavement and a preparing method. The gap filling adhesive is prepared from, by mass, 40% to 50% of SBS modified asphalt, 2% to 5% of toughening agent, 1% to 3% of surfactant, 2% to 4% of coupling agent and 43% to 50% of inorganic filler. The preparing method includes the steps that the liquid SBS modified asphalt is pumped into a dispersing kettle; the toughening agent is added, and the mixture is dispersed at a high speed at the temperature of 150 DEG C to 180 DEG C for 30 minutes to 60 minutes; the surfactant, the coupling agent and the inorganic filler or pre-prepared surfactant filler are sequentially added, the mixture continues to be dispersed, and even-thickness black liquid is obtained, cooled, solidified and packaged. The gap filling adhesive is black elastic solid at the normal temperature, and has good mechanical strength, excellent high-low-temperature performance, excellent permeating performance and excellent adhesive performance; the gap filling adhesive becomes flow high-viscous liquid after being heated, and is poured into gaps in the asphalt concrete pavement to seal the gaps, so that the comfort of the asphalt pavement is improved, and the service life of the pavement is prolonged.

Description

technical field [0001] The invention relates to a joint filling glue and a preparation method thereof, in particular to a joint filling glue for asphalt concrete road surface maintenance and a preparation method thereof. Background technique [0002] Crack is one of the most common, most prone and earliest diseases of asphalt concrete pavement. Cracks appear on the pavement and pavement maintenance cannot be carried out in time. Rainwater and other sundries will enter the surface structure and roadbed along the cracks, which will lead to a decrease in the bearing capacity of the pavement, accelerate local damage to the pavement, greatly reduce the use quality of the pavement, and shorten the road surface. The service life of the equipment increases the cost of post-maintenance. Therefore, when there are cracks in the asphalt concrete pavement, it should be sealed and repaired in time. [0003] Gap glue is a material used for sealing and repairing cracks in asphalt concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J153/02C09J11/04C09J11/08
CPCC09J195/00C08K2201/011C08L2201/08C08L2205/03C09J11/04C09J11/08C08L53/02C08L81/04C08K9/06C08K2003/265
Inventor 岳林海
Owner HANGZHOU HAIHE TECH CO LTD
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