National Standard Medium Temperature Asphalt

GB Medium Temperature Asphalt No. 1

Softening point: 80-95°

Ash content: ≤0.3%

Toluene insoluble: 20-30%

Quinoline insoluble: 5-12%

Coking value: ≥48%

Fixed carbon: ≥38%

Moisture: ≤3%

Product form: Granular, lump

GB Medium Temperature Asphalt No. 2

Softening point: 85-93°

Ash content: ≤0.3%

Toluene insoluble: 20-30%

Quinoline insoluble: 15-25%

Coking value: ≥48%

Fixed carbon: ≥38%

Volatile matter: 50-65%

Moisture: ≤3%

Product form: Granular, lump

I. Characteristics and Uses of Medium Temperature Asphalt

1. Adhesion

Medium temperature asphalt has good adhesion and can bond tightly with various materials, such as wood, cement, and masonry. Due to its strong bonding force, it can be widely used as waterproofing, anti-corrosion, and sealing material in construction, bridges, tunnels, and other projects.

2. Thermal stability

Medium temperature asphalt is not easily softened or deformed at high temperatures, exhibiting good thermal stability. During the high-temperature summer season, waterproofing layers made with medium temperature asphalt are less prone to flowing or blistering, ensuring the reliability of waterproofing projects.

3. Water resistance

Medium temperature asphalt is easy to construct and can be applied by brushing, spraying, and other methods. Additionally, medium temperature asphalt has a short curing time, allowing it to achieve the desired effect quickly and shorten the project cycle.

4. Ease of construction

Medium temperature asphalt is easy to construct and can be applied by brushing, spraying, and other methods. Additionally, medium temperature asphalt has a short curing time, allowing it to achieve the desired effect quickly and shorten the project cycle.

II. Production and Processing of Medium Temperature Asphalt

1. Raw material selection

The main raw material for producing medium temperature asphalt is coal tar, which is obtained through high-temperature cracking and distillation processes. In terms of raw material selection, coal tar with low impurities, light color, and moderate viscosity should be chosen to ensure the quality and performance of medium temperature asphalt.

2. Production process

The production process of medium temperature asphalt mainly includes high-temperature cracking, distillation, and blending. High-temperature cracking involves heating coal tar to high temperatures to initiate cracking reactions, producing light oils and heavy oils. Distillation involves heating and distilling the heavy oils to separate components with different boiling points. Blending involves mixing different components in specific proportions to obtain the medium temperature asphalt product.

3. Processing methods

Medium temperature asphalt can be processed by heating and melting, using methods such as hot pressing and cold pressing. During processing, appropriate processing methods and parameters should be selected based on the intended use to ensure the performance and quality of medium temperature asphalt.

III. Application Examples of Medium Temperature Asphalt

1. Building waterproofing projects

In building waterproofing projects, medium temperature asphalt can be widely used as a waterproofing treatment for roofs, basements, bathrooms, and other areas. By brushing or spraying medium temperature asphalt, water penetration can be effectively prevented, ensuring the normal use and safety of buildings.

2. Bridge anti-corrosion projects

As an important transportation facility, anti-corrosion projects for bridges are crucial. Medium temperature asphalt can be used as an anti-corrosion coating applied to the surface of bridges, effectively preventing corrosive media from damaging the bridge structure and extending the bridge's service life.

3. Tunnel waterproofing and anti-corrosion projects

Waterproofing and anti-corrosion are critical aspects of tunnel engineering. Medium temperature asphalt can be widely used as a waterproofing and anti-corrosion coating for the inner walls and floors of tunnels, improving the safety and durability of the tunnel.