The improved plaster walls: structure, technology

Plaster is associated with the simplest types of materials, which differ affordable cost and ease of application. The technique itself facing surfaces of plaster coatings and is very versatile, allowing its use in professional and household maintenance activities. However, the requirements for finishing are constantly increasing, affecting the technical and aesthetic aspects of the wall design. Therefore, the market increasingly, there are trains, some of whose properties have been modified with additional ingredients. So there was and improved plaster, which stands out not only in composition but also in application technology.

What is the advantage of an improved plaster?

In most cases, and simple plaster with proper application fulfils its function for long time operation. And yet, the improved formulations allow you to resolve a number of technical and physical disadvantages of usual solutions. First and foremost is the mechanical stability that implies a high threshold of tolerance of the structure to the formation of microcracks, enhanced sealing, enhanced reinforcement mesh, and the absence of destructive processes in contact with moisture. Modern technology improved plaster is also focused on the preservation of coatings in special applications. It has been found that such compositions are not afraid of moisture, but this does not mean that any improved solution can be used in the kitchen and in the bathroom. For this purpose there are special modified mixture, which also belong to the superior. Universal modification is the resistance. Compared to conventional plaster such mixtures have a long period of preservation of the structure in terms of direct thermal effects and do not contribute to the spread of fire.

Recommended

The most effective methods of seed germination

Despite the fact that the method of seedling in vegetable production is a very time consuming process, it is used by most gardeners. Planting seeds in open ground is an easy and convenient method, but it is effective only in certain climatic zones. I...

Retro-reflective paint. The scope of

When the vehicle began to fill the road, their popularity began to gain reflective paint. Thanks to this paint, as drivers and pedestrians becomes much easier to avoid accidents in the dark. Purpose paint Reflective paint – paint material, whic...

How to make icon with your own hands - options izgotovleniya (simple and complex)

In Soviet times, many collecting badges, emblems, pennants. To get them was not easy. And today, thanks to technology, you can make them yourself. Knowing how to make icon with your own hands, and you can make original gifts to your friends, and make...

A superior mix

First, let's say that improved are also referred to as plaster and coatings, made of traditional compositions with no modifiers. Only three components used for the preparation of such mixtures-sand, water and cement. And improved they are called only because of special equipment installation, which will be discussed below. Regulatory the improved plaster composition necessarily involves the introduction of PVA glue, which acts as an additional binder between the cement base and sand. More importantly, the underlying components must be of high quality. Any of the characteristics of the sand, for example, is extracted from the ground, not is washed in the rivers. The second option is cheaper, but the real improved formula in this case is not to. Also the cement should not be stale in the cold and wet warehouses and dry and ready to use – it is recommended to use Portland cement M400 or M500.

Preparation of solutions

There are peculiarities in the procedure of solution preparation. So, if a simple mixture prepared with the use of four parts sand to one part cement, superior solutions, the ratio is 3:1. The increase in the number of sand fractions, however, is allowed when included in a solution of quicklime. PVA glue should be used at the rate of 200 g per 20 l of water. With the formation of water-glue and it should start cooking, carefully stir. Next is introduced a dry base with cement and sand. After thorough mixing, the mixer construction is supposed to be the improved plaster with high characteristics of elasticity and ductility. In some ways it will resemble melted rubber, but after drying the effect will be and remain tenacious coating with a durable structure.

Features of gypsum compositions

One of the varieties of the improved plaster mixes, which is obtained by modifying the basic set of components. As the name implies, this is achieved by the inclusion of gypsum. First executes the already described procedure of creating a glutinous solution, after which the dry mixture of sand and cement gypsum is added. The amount of this additive may vary, but in any case maintained the following rule: weight plaster filler replaces only the part of the mass of cement, but no sand. That is, of the ordinary shares of the cement can eliminate 20-30%, compensating for the lack of plaster. If you plan to run the improved plaster with minimal cost, but without much loss in quality, you can use exactly this combination. Gypsum optimally interacts with the PVA, so the displacement of the cement will not be so noticeable from the point of view of the technical qualities of the coating, as is the case with conventional solutions.

Preparatory work prior to application

Apply the solution only on a solid surface, which do not have crumbling areas. For this it is necessary to pre-strip the old peeling or weak coatings, primers and paint layers. Then checked the vertical deflection, that is,fossa. It is desirable that the target surface had deviations of height greater than 2 mm. a Mandatory step in the preparation is a spray. This kind of method of priming sites, which will be applied the improved plaster with adhesive. The mortar for the scratch coat is prepared with soap and water. In fact, it is the soapy water, which should be easy to dampen the work surface before laying of plaster. The spraying must not give a separate place to dry. He needed to fill small cracks and holes, therefore the presence of such defects in the clear can create a risk for the destruction of the new coating.

Device improved plaster

Styling is implemented in two phases – through the implementation of base and finish coat. The substrate as a primer layer. For the application of mass it is possible to use poluterok, performing a circular motion at an angle of 150 degrees relative to the working surface. The thickness of the base coating is about 15-20 mm. as for the finish coat, to some extent, this topcoat, under which is especially important accuracy. This layer will have a height of about 10 mm, that is, the total thickness of the improved plaster will be 25-30 mm. the Application of the finish coat is trowel, brush or trowel. High responsibility of this phase is caused by the fact that the contractor will need to be able to perform grout and leveling of the coating. This can be used pneumococci – mechanized tool for high-quality laying of plaster mixtures.

Where it is reasonable to apply improved plaster?

Improved solution for plaster with all the advantages and has some limitations for use. First, the mixture turns out more expensive due to the use of major high quality components and depositing glue ingredient, not to mention possible auxiliary modifiers. Secondly, the presence of PVA glue, in addition to the positive effect is negative – reduced the environmental friendliness of the composition that preclude the use of the solutions in children's rooms, bedrooms, etc. So ordinary house masters can recommend such mixtures for the exterior. The best option is improved the plaster walls of the facade. The performance of the composition protects the house from climatic effects, but also will protect the Foundation of brick or concrete surface from mechanical damage.

Conclusion

As can be seen, improved such mixtures can only be described with some reservations. Therefore, before the decision to move to this type of finish is to think about the reasons why you cannot use conventional coatings. In addition, the improved plaster in a broader sense can be a improved solutions to basic component parts. For improvement of certain performance properties you can use other natural ingredients. Professional plasterers, in particular, regularly experimenting with the addition of the same lime and gypsum in varying proportions.