Build Daily

Building Materials

August 12, 2017 18:08

How to dissolve the plaster : it is important not only to the proportion of

What do we know about the plaster?

This material is very flexible, is applied to almost all kinds of surfaces, it hardens quickly and easily processed.It used it in a variety of sectors of the economy: as a fertilizer component pulp and paper production, the production of the ingredients of paints and enamels.And, of course, the calcined powder is used for the casting of internal construction elements of decor, as the binding material in construction.

There are special types of building brands.Produced high-mix and plaster-cement (pozzolanic) binders.Working with the plaster does not cause great difficulty.Hardening, it forms very convenient for processing a stone-like mass.Therefore, it is widely used to produce all kinds of crafts.Here obvious advantage is the high turnover of the solution, which is very convenient for molding.

fine pore structure makes gypsum an irreplaceable material for all sorts of molds, also with the addition of high-temperature components.

The disadvantages are its low strength and hygroscopic, so the use of undesirable materials in areas with high humidity.If necessary, apply waterproof coatings.Thus it is necessary to consider how to work with plaster.The porous structure helps to absorb applied directly on the coating surface.Therefore it is necessary to pre-primer such surface under the corresponding coating.

How to dissolve gypsum - a few preliminary remarks

should also be noted and the work with the solution.Here largely plays a role in what proportions gypsum plant.But, in general, its hardening time is 20 minutes to an hour.Reusing already started to harden plaster undesirable becauseThis affects the quality of work for the worse.This fact must be considered before use of gypsum.It is necessary to prepare a solution with its contents only to the amount of work that can be completed within a specified time period.

As practice shows, finding it a complete replacement is not possible, so you need to know how to dissolve the plaster.It is always useful to carry out minor repairs, putty works, etc.In preparing the plaster test should take into account the proportions.With a larger amount of powder obtained dough thicker material hardens a little faster.And vice versa.We can say that for the thicker the ratio of gypsum and water solution will be about 2: 1, respectively.

average density (call it normal) will be obtained, if a liter of water add about a half kilogram of the mixture.Quite batter rather the solution obtained in a ratio of plaster and water one by one.

Knead plaster yourself

preparing plaster solution, you need to know as gypsum kneaded properly.The main thing - to pour water in the proportions of powder with continuous stirring the above.And not vice versa.And add it uniformly and gradually, avoiding the formation of lumps.You should know that with the possible release of a small amount of heat.

addition, too long stirring time is undesirable becauseIt leads to the phenomenon of rejuvenation.To work with plaster recommended tool stainless steel or solid wood, you can use special rubber spatula, etc.As mentioned above, when working with plaster solution rather limited.Therefore, the technology works with plaster, except for the definition of "a la carte" of its preparation should be taken into account and the associated "layering" processing.

necessary to prepare already treated part (before full curing) with special notches.A long break in work already done and the hardened layer should be lightly moisturize before applying the next layer of material.If necessary deceleration setting reaction of gypsum is possible to use so-called water glue (glue or inner side of the gelatin solution).The opposite effect can be achieved by adding ordinary table salt.In each case it is necessary to experiment with regard to the proportions of the components.