Cold-applied water-based crack pouring sealant and preparation method

A water-based technology of joint glue, applied in the field of modified asphalt, can solve the problems of environmental pollution, complex components, inconvenient operation, etc., and achieve the effects of solving pollution, good permeability, and saving manpower and material resources

Inactive Publication Date: 2015-03-25
SHANDONG DASHAN ROAD & BRIDGE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problem of hot-fill joint adhesives is that they must be heated before use, and the cracks must be grooved before construction; the existing cold-fill joint adhesives generally contain certain solvents (dichloromethane, alcohols, oils, etc.), and the cost High, polluting the environment
The composition of water-based glue in this road is complex, and it contains adhesive, which is inconvenient to operate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of cold construction water-based caulking glue comprises the following steps:

[0017] 1) Heat 60kg of base petroleum asphalt 70# to 180°C, add 6kg of SBS modifier (Yueyang Petrochemical 791-H), 2kg of petroleum resin, 5kg of high-grade fatty acid saponin, and 2kg of PVA (PVA is low-viscosity PVA with an average molecular weight of 16,000 -20000), stirring evenly, shearing and grinding, and then stirring for 120 minutes;

[0018] 2) Heat the water to 60°C, add 3kg of cationic fast-cracking emulsifier to 22kg of hot water, and stir for 10 minutes;

[0019] 3) Mix the material obtained in step 1) with the material obtained in step 2) and perform shear grinding to obtain a modified emulsified asphalt with an evaporation residue content of 78%, and the softening point of the evaporation residue of the modified emulsified asphalt is 93. For the detection method of evaporation residue content, refer to "Test Regulations for Asphalt and Asphalt Mixtures...

Embodiment 2

[0021] The preparation method of cold construction water-based caulking glue comprises the following steps:

[0022] 1) Heat 55kg of base petroleum asphalt 70# to 170°C, add 8kg of SBS modifier (Yueyang Petrochemical 791-H), 2kg of petroleum resin, 3kg of high-grade fatty acid saponin, and 1kg of PVA (PVA is low-viscosity PVA with an average molecular weight of 16,000 -20000), stirring evenly, shearing and grinding, and then stirring for 120 minutes;

[0023] 2) Heat the water to 65°C, add 1kg of cationic fast-cracking emulsifier to 30kg of hot water, and stir;

[0024] 3) Mix the material obtained in step 1) with the material obtained in step 2) and perform shear grinding to obtain a modified emulsified asphalt with an evaporation residue content of 70%, and the softening point of the evaporation residue of the modified emulsified asphalt is 105. For the detection method of evaporation residue content, refer to "Test Regulations for Asphalt and Asphalt Mixtures in Highway En...

Embodiment 3

[0026] The preparation method of cold construction water-based caulking glue comprises the following steps:

[0027] 1) Heat 55kg of base petroleum asphalt 70# to 190°C, add 10kg of SBS modifier (Yueyang Petrochemical 791-H), 2kg of petroleum resin, 3kg of high-grade fatty acid saponin, and 2kg of PVA (PVA is low-viscosity PVA with an average molecular weight of 16,000 -20000), stirring evenly, shearing and grinding, and then stirring for 120 minutes;

[0028] 2) Heat the water to 75°C, add 3kg of cationic fast-cracking emulsifier to 25kg of hot water, and stir;

[0029] 3) Mix the material obtained in step 1) with the material obtained in step 2) and perform shear grinding to obtain a modified emulsified asphalt with an evaporation residue content of 75%, and the softening point of the evaporation residue of the modified emulsified asphalt is 109. For the detection method of evaporation residue content, refer to "Test Regulations for Asphalt and Asphalt Mixtures in Highway E...

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PUM

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Abstract

The invention discloses a cold-applied water-based crack pouring sealant and a preparation method thereof and relates to the technical field of modified asphalt. The cold-applied water-based crack pouring sealant consists of base petroleum asphalt, a modifying agent, petroleum resin, higher fatty acid saponin, PVA, an emulsifying agent and water. The cold-applied water-based crack pouring sealant disclosed by the invention is high-performance and high-solid-content emulsified modified asphalt of which the solid content is as high as 70% to 85% and the softening point of evaporation residues is larger than 90 DEG C, and construction can be carried out when the air temperature is not lower than 0 DEG C. The cold-applied water-based crack pouring sealant is good in fluidity at normal temperature, can be well poured into cracks without being heated or opening the cracks and is good in wear resistance, impact resistance and cracking resistance, good in heat resistance, fusion adhesion resistance and ultraviolet radiation resistance at a high temperature, energy-saving, environment-friendly, low in cost and convenient to use.

Description

technical field [0001] The invention relates to modified asphalt, in particular to a cold construction water-based joint grouting glue and a preparation method thereof. Background technique [0002] Crack is one of the most common hazards of asphalt concrete pavement, and it is a serious one among various road diseases. If there are simple transverse cracks or longitudinal cracks, and the pavement cannot be maintained in time, harmful substances such as moisture will enter the interior of the pavement. Under the conditions of load and light, the cracks will spread further and form cracks, which will eventually lead to pavement cracks. Potholes and other more serious diseases greatly reduce the quality of the pavement and increase the cost of later maintenance. In order to improve the quality of road conditions and strengthen the preventive maintenance of the pavement, it is necessary to strengthen the prevention and treatment of early cracks in the pavement. Therefore, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J153/02C09J157/02C09J129/04C09J11/06C09K3/10
Inventor 陈际江刘英涛扈利东梅林杨树人
Owner SHANDONG DASHAN ROAD & BRIDGE ENG
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