One of the effective ways to improve the protective characteristics of structures, materials and structures is the use of soil compositions. These include a bituminous primer, which is also called a primer. This should also include mixed compositions based on polymers and bitumen. Such mixtures have high protective ability and low viscosity. After application, it is possible to obtain a well-protected surface, which can be eliminated from micro-irregularities.
Key Features
The main purpose of the primer is the insulation of the basement and concrete foundations, pipelines and cement-sand screeds. Bituminous primer allows you to reduce the absorption of water into the material, as a result, you can save on building materials. In the production process of the primer, a whole set of components is used, among them:
- molten bitumen;
- plasticizer;
- filler.
The finished primer differs from bitumen in that it does not become brittle at low temperatures. Primers during application provide adhesion to the treated surface. use themcan be used not only as independent insulation, but also when installing rolled materials. In this case, the composition acts as an adhesive mass and allows you to seal the seams.
Bituminous primer is easy to use, because it can be diluted to the optimum consistency with white spirit or gasoline. Such mixtures are sold in sealed tin buckets. The primer composition can be used partially, and the unused mixture can be left for subsequent use.
Design Features
The instructions for applying the primer indicate that working with it does not involve any particular difficulties. It is only important to remember that the quality of the coating will depend on how well the surface preparation was carried out. As for cement-sand and concrete bases, they must be dedusted.
The primer mixes well until a homogeneous consistency is obtained. The mixture should not have seals and lumps. If necessary, it can be diluted and a higher hiding power can be achieved. To apply a bituminous primer, use a roller or wide nylon brushes.
In the process, you need to try to form an even layer without smudges. If it was not possible to avoid them, then you need to smooth them out immediately. The optimum result is achieved by applying by pouring technology with subsequent spreading of the composition over the surface. It is recommended to use a rubberized mop for this.
Instructions for applying to metal surfaces
Technology for applying primer to metal surfaces provides for compliance with the following work algorithm. The base must be cleaned to metal with a wire brush. If extensive corrosion remains after this, then a rust converter should be used.
Application should be carried out with a roller in one or more layers. The distribution of the bituminous primer under the polymer coating is carried out with a mop. The primer is made according to state standards 6617-76, after reading which you can understand that the application is carried out outside objects or structures in dry weather. Technological requirements provide for the need to protect the surface from excess moisture during the day, such conditions should be followed until the surface is completely dry. If the primer is applied indoors, then good ventilation should be provided.
Important to remember
When applying mastic, safety precautions must be observed, because the material contains combustible components. Therefore, the use of a primer is allowed only away from sources of open fire and only with the use of personal safety equipment, among them gloves and goggles should be highlighted. It is important to ensure that a set of fire extinguishing equipment is present at the facility.
Varieties of bituminous primers
Bituminous primer, GOST of which was mentioned above, plays the role of passive protection. This type of insulationprotects surfaces from external factors, including temperature changes, excessive humidity and ultraviolet radiation. Three types of primers are currently known. Among them are bituminous mineral primers, which have asph alt and dolomitic limestone, as well as crushed dolomite, which acts as an aggregate.
Bitumen-polymer primer is the second type of primer, which is made with the addition of powdered or atactic polypropylene. Bituminous-rubber primers are made using aggregates from rubber waste. Among these ingredients are finely ground cushioned tires. For the plasticity of the primer under adverse climatic conditions, plasticizers are introduced into the composition. The material eventually acquires a lack of fragility.
Description and scope of use of the bitumen-rubber composition "TechnoNIKOL No. 20"
This bituminous rubber primer is a ready-made material from petroleum bitumen, processing aids, modified polymer and mineral fillers. Among the ingredients are organic solvents. After drying, the mastic acquires a high-strength coating that can be used over a wide temperature range. The mixture is intended for the repair of roofs and the installation of mastic roofs, as well as the protective layers of the roof and waterproofing of building structures, structures and buildings.
Consumption of bituminous primer can vary from 3, 8 to5.7kg per square meter. If we are talking about the installation of a waterproofing layer, then the consumption will be reduced to 2.5 kg per square meter. The mixture can be used at temperatures ranging from -20 to +40 °C. Within 24 hours the composition is maintained at a temperature of +5 °C. It is forbidden to use it near sources of open fire. It is important to carry out work in intensively ventilated rooms. Masters should use personal protective equipment and avoid getting the primer in the eyes and on the skin.
Description of the primer "TechnoNIKOL No. 01"
If you need a primer, the TechnoNIKOL bituminous primer will be a good option. It is a ready-to-use formulation of high quality petroleum bitumen. The softening point is 70 °C or more. The primer allows you to arrange a durable and reliable waterproofing system. Priming allows you to increase the adhesion of the canvas and waterproofing material to the waterproofing base. This prevents the carpet from tearing off under wind load.
Among the additional benefits of the material should be highlighted:
- quality components;
- ready to use;
- fast drying step;
- high penetrating power;
- possibility to use at low temperatures;
- quality control;
- high production culture.
Mass fraction of non-volatile substances can be equal to 45 to 55%. Drying time is approximately 12 hours at 20°C There are no foreign and inhomogeneous inclusions in the composition. The nominal viscosity is from 15 to 40 °C. Before use, the primer is mixed until a homogeneous mass is formed. Before processing, the surface must be cleaned of the remnants of the old waterproofing, sand and dust.
Conclusion
Quality bituminous primers that are laid under a rubber or polymer coating are made today by foreign and domestic brands. There is a wide range of similar compositions on the market, among them are options that will correspond to the characteristics of certain surfaces. Bituminous coating is applied quite simply, however, despite this, it is important to follow the technological requirements. Only then will it be possible to achieve a positive result - the layer will turn out to be uniform, strong and durable.
