When gypsum is mixed with water, a chemical reaction called hydration occurs. This reaction causes the gypsum to crystallize, transforming it from a powder into a solid material. As water is added to gypsum, it dissolves and forms a gypsum paste, which eventually hardens and sets into a solid mass. This process is essential in various applications, such as gypsum plastering and gypsum board production.
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When mixing, the ratio of gypsum to water depends on the specific application and desired consistency. As a general guideline, a commonly used ratio is typically around two parts gypsum to 1 part water by weight. However, referring to the specific instructions provided by the manufacturer or industry standards for the appropriate mixing ratio based on the intended use is essential.
Gypsum additives are specifically formulated to enhance the properties of gypsum-based materials. Including cellulose ethers (HPMC, HEMC, HEC) as additives can improve gypsum plaster adhesion and sag resistance.
RDP (Redispersible Polymer Powder) can enhance the strength, flexibility, and water resistance of gypsum-based products such as gypsum boards. These additives improve gypsum applications’ performance, durability, and overall quality.
Several additives are widely used in conjunction with gypsum to optimize its performance. For example：
– Cellulose ethers (HPMC, HEMC, HEC) are commonly used with gypsum to optimize performance. These cellulose ethers act as rheology modifiers. They can improve gypsum-based materials’ workability, adhesion, and sag resistance.
– Antifoaming agents can prevent foam formation during the production of gypsum-based products.
– Calcium formate can enhance the setting time and workability of gypsum mixtures.
– Concrete fibres (PVA, PPF, PAN, PET) can be added to gypsum to improve its structural integrity and crack resistance.
Additives are indispensable elements when preparing plaster. They have several functions, according to the need for use and the project, always seeking to help facilitate the work with this material.
Additives can, for example, increase the working time of the plaster and facilitate the entire process, in order to offer the professional more time for handling, reduce waste and facilitate the manufacture of the parts.
Another important characteristic lies in its ability to provide moisture resistance, protecting the material from the action of water. Performance and durability are also advantages that count for the conservation of plaster and can be obtained with the use of water repellents.
So, if you want to understand the specific action of each product designed to work with plaster, keep reading!
To understand how this additive works, we need to talk about the usefulness of Cola chalk. It is a common plaster, but it is added with BlokGesso Cola, and serves to establish the bonding of at least two prefabricated pieces, such as moldings, plaster blocks, frames, panels, and plasterboard sheets.
Gypsum glue takes longer to dry than regular plaster. As for open time, it can last from 40 minutes to an hour and a half. BlokGesso Cola, on the other hand, is an additive that increases performance and reduces material waste, acting as a guarantee of the perfect union between the plaster pieces, and prevents rework.
The plaster application time is fast. Those who work with this material need to know how to handle it, since the hardened product hinders a series of processes.
Gypsum retardants do what their name says: they extend the application time of the material, making it easier for professionals to work.
Useful for plaster putty, frames, plates, drywall and plaster artifacts in general, the Blok Slow Plaster It is ideal because it does not alter the characteristics of Gypsum mortar. In addition, it provides incredible plasticity for the work, providing the much desired gradual hardening of the mixture.
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Another advantage of BlokGesso Lento is that it allows the gypsum mixture to be dosed as needed in the open state. This factor reduces the waste of cured mortar and increases the smoothing time upon application.
Thus, with the use of plaster retardant, it is possible to greatly reduce the waste of plaster on construction sites. In addition to saving plaster, you will also save on its disposal and help the environment!
When applying and fixing moldings, frames and plaster in general, it is very important to work with a product that guarantees successful adhesion and resistance - such as fixing adhesives.
With a low cost per square meter, the BlokFix Chalk it is one of the most efficient solutions on the market. As an excellent adhesive for plaster artifacts, moldings, smooth plaster and frame fixer, it provides high adhesion in EPS and also reduces the amount of splashes during application.
The excellence of its adhesiveness to different substrates lies in the composition of its formula, based on high-performance synthetic resins and polymer characteristics that reduce fissures, in addition to increasing wear resistance and plasticity.
Work with plaster outside or Wet it is very difficult, since the material does not withstand direct contact with water or moisture. To solve this problem, chemical laboratories have developed specific waterproofing agents for this type of material, called water repellents for plaster.
O Blok Gesso It is one of the only products that water repels any piece made of plaster and increases its durability to impressive levels, even if it is exposed to wetness.
Developed with high technology to improve work, BlokGesso offers a guarantee for maximum plaster protection, proving the success of laboratory tests and its efficiency index above international standards.
With excellent profitability, it is also a good option for those looking to add value to plaster artifacts and thus multiply profits. In addition, it can be perfectly applied in the production of drywall sheets, hydro gypsum blocks, decorative pieces, GRGH blocks, 3D gypsum boards, and even in handicrafts.
The choice of suppliers is very important for your business, as it directly affects the quality of the services that will be developed. To do this, it is necessary to have a good mood and a careful eye when making the selection.
To choose good suppliers, rely on recommendations from customers and check how well the company complies with the legislation.
A good tip is to use the internet as a true ally, researching everything you can about the possible supplier of plaster additives and observing the way in which they position themselves with their online audience. A poorly selected company can cause financial losses and tarnish your reputation, so pay maximum attention to this moment.
Plaster additives are essential for those who want to work with this type of mixture. As you have seen, they offer several possibilities for improving work. When choosing the right product, it is worth relying on gypsum additive lines such as the one from Blok, which opts for the quality of the materials, providing safe and high-performance products.
Speaking of safety, remember to be aware of all necessary recommendations before handling any chemical element. Always use safety equipment as specified on the label, Technical Data Sheet, or FISPQ for each item.
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