ETONIS® 7050 A
ETONIS® 7050 A is a multi-purpose polymer dispersion for concrete and bitumen application, especially suited for latex modified concrete, precast concrete, concrete repair and emulsified bitumen for road construction. It is based on a copolymer of vinyl acetate and ethylene and belongs to the product class ETONIS® A and it has a neutral effect on rheology and provides the basic properties adhesion and flexibility, giving a high degree of formulation freedom. ETONIS® 7050 A is part of our standard range, offering you the best-in-class solution for a wide variety of infrastructure applications.
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• ETONIS® 7050 A makes fresh concrete easier to process and pump because it reduces the frictional forces between cement and aggregates.
•The cohesive properties of ETONIS® 7050 A increase the sedimentation stability of concrete and emulsified bitumen, reducing bleeding and segregation.
•ETONIS® 7050 A has a plasticizing effect and reduces the water/cement ratio without compromising the concrete's workability.
•In hardened concrete and bitumen with ETONIS® 7050 A improves adhesion, enhances flexural strength and increases abrasion resistance.
•Concrete modified with ETONIS® 7050 A seals against pressing water, shows enhanced carbonation resistance and
prevents the ingress of aggressive media into the mix.
•In combination with suitable foam-control agents and concrete admixture, ETONIS® 7050 A also increases compressive and flexural strength.
•ETONIS® 7050 A is a hard general-purpose dispersion and has no effect on rheological properties. It is eminently suitable for formulating compounds of high ultimate strength.
•Low emissions
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Applications
• Concrete Admixture
• Latex Modified Concrete
• Precast Concrete
• Seal Coat Bitumen
• Prime & Tact Coat Bitumen
Application details
For typical application fields of ETONIS® 7050 A, refer to the section "application". Please discuss additional applications with your WACKER customer representative.
Processing
ETONIS® 7050 A may be added in liquid form to the fresh mixed liquid concrete. The amount of ETONIS® 7050 A needed to modify concrete ranges from 2.5 - 20 wt. % relative to the quantity of polymer solid/cement. The exact amount will depend on the requirements profile.
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- 220 Kg Steel drum
- 1,100 Kg IBC
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When the dispersion is stored in tanks, proper storage conditions must be maintained. The product has a shelf life of 9 months starting from the date of manufacture if stored in the original, unopened containers at temperatures between 5 and 30°C. Any longer periods for the maximum storage period that may be described in the Certificate of Analysis which accompanies each shipment of the product, take preference over this suggestion in which case the time period stated in the Certificate of Analysis shall be solely authoritative. Iron or galvanized-iron equipment and containers are not recommended because the dispersion is slightly acidic. Corrosion may result in discoloration of the dispersion or its blends when further processed. Therefore, the use of containers and equipment made of ceramics, rubberized or enameled materials, appropriately finished stainless steel, or plastic (e.g. rigid PVC, polyethylene or polyester resin) is recommended. As polymer dispersions may tend to superficial film formation, skins or lumps may form during storage or transportation. Filtration is therefore recommended prior to utilization of the product.
Preservation for Transport, Storage and further Processing
The product is adequately preserved during transportation and storage if kept in the original, unopened containers. However, if it is transferred to storage tanks, the dispersion should be protected against microbial attack by adding a suitable preservative package. Measures should also be taken to ensure cleanliness of the tanks and pipes. In unstirred tanks, a layer of preservative-containing water should be sprayed onto the surface of the dispersion to prevent the formation of unwanted skin and possible attack by microorganisms. The thickness of this water layer should be < 5 mm for low viscosity dispersions and up to 10-20 mm for high viscosity products. Proper procedures - periodic tank cleaning and sanitization - must be set up in order to prevent microbial attack. Contact your biocide representative/supplier for further plant hygiene recommendations. Measures should be taken to ensure that only clean air enters the tank when the dispersion is removed. Finished products manufactured from polymer dispersions usually also require preservation. The type and scope of preservation will depend on the raw materials used and the anticipated sources of contamination. The compatibility with other components and the efficacy of the preservative should always be tested in the respective formulation. Preservative manufacturers will be able to advise you about the type and dosage of preservative required. If the product is stored for a longer period, stirring is recomended before use.
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