Preparation method of pavement joint sealant

A joint glue and mixture technology, applied in the direction of adhesives, other rubber adhesives, adhesive types, etc., can solve the problems of poor high and low temperature performance of ordinary asphalt, car tires, low efficiency, etc.

Inactive Publication Date: 2017-09-26
山西宝路加交通科技有限公司
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Problems solved by technology

[0003] There are many ways to repair pavement cracks. The traditional crack treatment method is to use heated liquid ordinary asphalt and pour it directly into the cracks when the temperature is the lowest. However, the high and low temperature performance of ordinary asphalt is poor. At low temperatures in winter, the asphalt loses its elasticity and still cracks. , becomes soft at high temperature in summer, and is easily taken away by car tires. Therefore, the traditional crack treatment method is inefficient and cannot meet the requirements of road maintenance.

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  • Preparation method of pavement joint sealant

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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] Such as figure 1 Shown, the preparation method of a kind of pavement joint glue of the present invention comprises the following steps:

[0017] S1. Heating petroleum asphalt with a mass percentage of 50-75% to 160-170°C to a fluid state;

[0018] S2. In a stirring state, add 15-45% styrene-butadiene-styrene block copolymer, 30-60% compatibilizer, and 4-10% polymer in sequence;

[0019] In this step, the styrene-butadiene-styrene block copoly...

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Abstract

The invention discloses a preparation method of road surface joint glue. The petroleum asphalt with a mass percentage of 50-75% is heated to 160-170°C to a flow state; in the stirring state, 15-45% styrene-butadiene is sequentially added ethylene-styrene block copolymer, 30-60% compatibilizer, 4-10% polymer; then grind in a colloid mill with a rotation speed of 2000-4000rpm for 15min-45min, and the grinding temperature is 165-185°C; Then add 25-50% waste rubber powder, then stir at 175-195°C for 60-90 minutes; then at 150-170°C, add high-temperature viscosity-reducing components and plasticizers, cool down to 120-140°C and stir Swell in the state for 2-5 hours; finally cut the mixture, add 0.06-0.2% stabilizer, and react for 1-5 hours to prepare the road surface joint glue. This improves high temperature stability, low temperature flexibility, elastic recovery and fatigue resistance, and is suitable for pavement crack treatment in cold and extremely cold climates.

Description

technical field [0001] The invention relates to the technical field of road surface joint glue, in particular to a preparation method of road surface joint glue. Background technique [0002] Pavement cracks are one of the main diseases of our country's highways, which seriously affect the performance of roads, advance the maintenance period of roads and greatly increase maintenance costs, and shorten the service life of roads. Especially in the Northeast of my country, roads are affected by temperature changes during operation and produce more temperature cracks, which have a great impact on the overall performance of the pavement structure. [0003] There are many ways to repair pavement cracks. The traditional crack treatment method is to use heated liquid ordinary asphalt and pour it directly into the cracks when the temperature is the lowest. However, the high and low temperature performance of ordinary asphalt is poor. At low temperatures in winter, the asphalt loses i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J153/02C09J121/00C09J191/00C09J11/06C09J11/08
CPCC09J195/00C08L2201/08C08L2205/035C09J11/06C09J11/08C08L53/02C08L21/00C08L91/00C08L91/06C08K5/20C08K5/12
Inventor 闫红光
Owner 山西宝路加交通科技有限公司
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