Asphalt-based waterproofing coating is a common waterproofing material, and according to its main components and uses, asphalt-based waterproofing coating can be divided into many types. Several common asphalt-based waterproofing coatings are described in detail below.
1.Petroleum asphalt waterproofing coatings. This kind of coating is made of petroleum asphalt as the main film-forming substance, adding an appropriate amount of solvents, fillers and additives, and stirring, dissolving, filtering and other processes. It has good adhesion, water resistance, weather resistance and chemical corrosion resistance, and is suitable for waterproof works of various buildings. In the process of use, it is necessary to pay attention to the control of the construction temperature, as well as the treatment of the base layer and the number of times the paint is applied to ensure the waterproof effect.
2.Coal tar bitumen waterproofing coating. This coating is made of coal tar asphalt as the main film-forming substance, and adds an appropriate amount of solvents, fillers and additives. Compared with petroleum asphalt waterproofing coating, coal tar asphalt waterproofing coating has higher heat resistance and chemical corrosion resistance, and is suitable for waterproofing projects in harsh environments such as high temperature, high humidity and chemical corrosion. In the construction process, it is necessary to pay attention to the control of the construction temperature and the uniform coating of the paint to avoid problems such as coating cracks.
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3.Polymer modified asphalt waterproofing coating. This coating is made by adding polymer modifier to petroleum asphalt or coal tar asphalt, and is made by stirring, dissolving, filtration and other processes. Polymer modifiers can improve the temperature resistance, chemical resistance and elasticity of asphalt, so that the coating has better waterproof performance and service life. Polymer modified asphalt waterproof coating is suitable for waterproofing projects of various buildings, especially for occasions that require long-term water, weather and chemical resistance. In the construction process, it is necessary to pay attention to factors such as the control of construction temperature, the uniform coating of paint and the treatment of the base layer to ensure the waterproof effect. For example, asphalt waterproof coating for roads and bridges, the most significant product advantage is heat resistance, type I products can reach 140, type II products can reach 160. In addition, spraying quick-setting rubber asphalt waterproof coating is a two-component emulsion waterproof coating, which generally refers to the quick-setting type. A two-component waterproofing coating consisting of a component A and a component B. Sprayed with professional equipment, the two components form a film at the moment of collision. This one is also polymer modified asphalt.
4.Water-based asphalt waterproofing coatings and solvent-based asphalt waterproofing coatings. Water-based asphalt waterproof coating is made of water-based asphalt as the main film-forming substance, adding appropriate amount of fillers, additives and solvents. It has the advantages of environmental protection, non-toxic, tasteless, etc., and is suitable for indoor waterproof projects. Solvent-based asphalt waterproof coating is made of solvent-based asphalt as the main film-forming substance, adding appropriate amount of filler, additives and solvents. It is suitable for outdoor waterproof projects and has good weather resistance and chemical corrosion resistance. For example, non-curing rubber bitumen waterproofing coatings are characterized by maintaining a paste and peristaltic form over the life of the product. To achieve this performance requirement is the viscosity and creep of asphalt materials.
There are many types of asphalt-based waterproofing coatings, and different types have different characteristics and scope of application. When choosing to use, it is necessary to choose according to the specific engineering requirements and conditions, and pay attention to factors such as temperature control, base treatment, and number of brushing times in the construction process to ensure the waterproof effect and service life. At the same time, it is also necessary to pay attention to the preservation and transportation of waterproof coatings during use to avoid being affected by moisture, high temperature and other factors to ensure their quality and performance.