1. What is Redispersible Polymer Powder (RPP)? .
Redispersible Polymer Powder (RPP) is a powder form of synthetic resins that are used in the construction industry. These powders are made by drying an emulsion of polymer in water, and they become dispersible again in water when mixed into a cementitious mixture.
2. What are the benefits of using RPP? .
RPP offers a lot of benefits to various construction applications. These include improving the workability, bonding, and durability of cementitious materials. This powder provides elasticity and flexibility to the mix, making it able to withstand cracks caused by temperature and moisture changes. Moreover, RPP improves the overall quality of mortar or concrete by reducing its porosity and improving its chemical resistance.
3. Where is RPP used? .
RPP is used in various construction applications, including tile adhesives, exterior insulation and finishing systems (EIFS), self-leveling compounds, grouts, and repair mortars, among others. It can also be used for decorative applications in paints and coatings.
4. What types of polymers are used in RPP? .
Many types of polymers can be used in RPP, but the most commonly used are polyvinyl acetate (PVAc), ethylene-vinyl acetate (EVA), and styrene-butadiene (SB).
5. How is RPP added to cementitious mixtures? .
RPP should be added to the cementitious mixture while mixing the dry materials. The powder will disperse and incorporate into the mix to improve the workability and bonding.
6. What is the recommended dosage of RPP? .
The dosage of RPP depends on the type of application and the desired properties of the cementitious mixture. The typical dosage ranges from 0.1% to 5% by weight of cementitious materials.
7. How long is the shelf life of RPP? .
The shelf life of RPP depends on the storage conditions. If stored in a dry and cool place, the powder can last up to 12 months.
8. How is RPP transported and stored? .
RPP should be transported and stored in its original packaging in a dry and cool place. The material should be protected from moisture and direct sunlight.
9. What are the environmental impacts of using RPP? .
RPP does not have any significant environmental impacts. The powder is made from synthetic resins and has a low organic solvent content, making it an eco-friendly material.
10. Is RPP widely used in Turkey? .
Yes, RPP is widely used in Turkey's construction industry as it offers a lot of benefits compared to traditional cement mixtures. The Turkish construction market is one of the biggest in Europe, and RPP is gaining popularity due to its versatility, cost-effectiveness, and durability.
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