In construction and infrastructure engineering, waterproofing is one of the key factors to ensure structural durability and durability. As an important waterproof material, asphalt-based thick waterproof coatings play a key role in waterproofing roofs and other building surfaces. This article will introduce the preparation methods of asphalt-based thick waterproof coatings and their main application fields.
Preparation method
The preparation of asphalt-based thick waterproof coatings is a delicate process that requires reasonable operation and temperature control. The following are the main steps to prepare this coating:
Bitumen melting and dehydration
First, the bitumen is heated to a molten state and impurities are removed through a dehydration process. This step ensures the purity of the paint.
Addition of waste rubber powder
Slowly add the waste rubber powder to the molten asphalt and stir as you go. This helps to evenly disperse the waste rubber powder and ensure a good mix.
Temperature rise
Continue to heat up to ensure that the waste rubber powder is fully integrated with the asphalt. If using fine rubber powder, the boiling temperature should be maintained between 180 ℃ and 200 ℃ for about 1 hour. If using crusher-processed waste rubber powder, the boiling temperature should be within 240 ℃ for about 2 hours.
Homogeneous dilute paste
During the boiling process, the paint will gradually form a uniform thin paste. When the paint can make uniform filaments, it means that the mixing has reached an ideal state.
Cooling and dilution
Finally, the paint temperature is lowered to about 100 ℃, and then a predetermined amount of gasoline is added to dilute. By stirring evenly, the final product is obtained.
Application
Asphalt-based thick waterproof coatings have excellent heat resistance, crack resistance, low temperature softness and water impermeability, and are suitable for a variety of construction and infrastructure projects. The following are some of the main application fields:
1. Roof waterproofing
This type of waterproof paint is mainly used on the roofs of buildings. It can effectively protect the interior of the building from rainfall and moisture. It is widely used in roofing works due to its good impermeability.
2. Places with low temperature softness requirements
Asphalt-based thick waterproof coatings are often used in construction projects in cold regions due to their low temperature softness. It maintains flexibility at extreme low temperatures without cracking, ensuring structural integrity.
3. Places with high adhesion requirements
Due to its thick nature, asphalt-based coatings can be used on vertical surfaces and slopes, ensuring strong adhesion. This is very important in some projects that require high adhesion, such as bridges and pools.
4. Affordable
Asphalt-based thick waterproof coatings are inexpensive relative to other waterproofing methods, and at the same time save a lot of diluent due to their high solids content and relatively few brushes. This makes it an affordable waterproof solution.
Conclusion
Asphalt-based thick waterproof coatings are a waterproof material widely used in construction and infrastructure projects. Through reasonable preparation methods, its quality and performance can be ensured, making it play an excellent waterproof role in various projects. This coating plays an important role in maintaining the integrity of buildings and infrastructure, helping to extend their service life and reduce maintenance costs. Therefore, asphalt-based thick waterproof coatings have an important position in the construction industry and will continue to provide reliable waterproof solutions for various projects.
