Superplasticizer for concrete and mortar
Superplasticizing and super-water-reducing additive for concretes and mortars based on polymethylene-B-naphthalenesulfonates of optimized molecular weight distribution.
Kratasol-Extra is distinguished by a low content of sulfates. According to its consumer properties, Kratasol-Extra complies with the requirements of GOST 24211, EN934-2, applied to superplasticizing, supernatant-reducing additives.
The additive can be used for production:
The additive is not a corrosive component of concrete, does not affect the protective properties with respect to steel reinforcement, does not cause its corrosion in the initial state and can be used in the manufacture of reinforced concrete structures in residential and public buildings in accordance with SNiP 52-01 and SNIP 2.03. eleven. The additive can be used for the production of high-strength concrete grade B40 and higher.
Recommendations for use
The superplasticizer Kratasol-Extra is introduced into the concrete mixture together with the mixing water, preferably with the last third of the mixing water. It is not recommended to add the additive to the dry mix. After adding the additive to the concrete mix, it is necessary to ensure a sufficient mixing time for a uniform distribution of the additive in the concrete mix. The additive is combined with the air-entraining admixture TM KRTASOL Aeromix if it is necessary to regulate the air entrainment (obtaining transport concretes, high frost resistance concrete, etc.), giving the concrete mixture special rheological properties, etc.
The recommended dosage of the additive is 0.2-0.7% in terms of dry substance with respect to the weight of binders or 0.6-2% of 35% solution.
In most cases, to obtain high-mobility concretes (P5) when working on a medium-aluminate cement (C 3 A = 6-8), the dosage of the additive is 0.3-0.5% in terms of dry matter (0.9-1.4% 35 % Solution) with respect to the mass of astringents. The range of recommended dosage supplements can be extended. The optimum dosage of the additive is established during laboratory selection. At the same time, the concrete composition is selected in accordance with GOST 27006 by any method that meets the design requirements for concrete and concrete mix, followed by adjusting properties by reducing water consumption and optimizing the dosage of the additive. It is recommended to dispense with an error of not more than ± 2%. In the case of long-term storage or use of large amounts of additives, it is necessary to periodically homogenize the additive solution by bubbling with compressed air or stirring.
In liquid form, the additive is supplied in bulk in auto- and railway tanks, as well as in plastic containers of various capacities.
In dry form, the additive is packed in paper or polypropylene bags with a polyethylene liner or soft containers such as MKR (big bags).
Store at + 5 ÷ + 35 ° C in a closed container. Avoid exposure to direct sunlight. If the recommended storage conditions are violated, the physical, chemical and consumer properties of the product may change. Observance of the recommended conditions allows storing the additive within 12 months from the date of manufacture. In the case of freezing of the aqueous solution of the additive after thawing and homogenization, the Kratasol-Extra superplasticizer can be used in accordance with the recommendations.
It is recommended to use protective gloves when working with the additive. If the additive gets on your skin, you should wash it off with soap and water. Avoid contact with eyes. In case of contact with eyes, rinse immediately with plenty of water and consult a doctor if necessary. Dispose of the additive according to local regulations, do not pour into the soil, water, sewerage.
Recommendations for the use of the additive are presented on the basis of the available practical experience with proper storage and use. For more information , please contact the technical support service of PJSC "Pigment", direction - " Additives in building materials".
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