Concrete hardening retarder
High summer temperatures accelerate the setting of concrete, which negatively impacts the final strength of the finished structure. Megaplast JK-08 hardening retarder (hereinafter JK-08 NP) promotes the natural growth of the concrete crystal lattice, allowing the building mixture to form a complex and uniform structure.
- Allows working with concrete mixture in hot weather conditions up to 400C
- Increases the durability of concrete by 20% due to the high fluidity of the solution
- Reduces the cost of compacting concrete mix
- Increases the adhesion of the mixture to the working surface, reducing load-bearing deformations
Storage and delivery features of concrete retarders
You can pick up your purchase in any convenient way: pick it up from our warehouse or order delivery. The minimum order quantity is 100 kg. For ease of transportation, our products are packaged in 25 kg woven plastic bags or 20 kg canisters.
In unopened packaging, the plasticizer is guaranteed to retain its properties for up to 12 months. After this period, testing should be performed before use to determine the optimal dosage. If you have any questions, please request a callback or call us.
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- JK-08 NP is an ideal admixture with high strength properties for long-distance transportation in hot, dry climates.
- Acceptable working temperatures range from 5 to 400°C.
- Not suitable for steam-cured concrete.
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0.5-1.2% of the cement mass. The exact dosage depends on the concrete grade, composition, cement quality, water-cement ratio, and temperature.
Paragraph Standarts Paragraph Standarts Appearance Bulk powder Concrete additive 230mm Grinding fineness (0.315mm remains) % ≤12% Chloride content No PH volume 7-9 Humidity % 8.0 max -
JK-08NP superplasticizer is made from naphthalene with the addition of highly effective hardening retarders.
It complies with ASTM C 494 Type G, GB 8076-2008, and GB 50119-2003.
Paragraph Criterion Test results (C×1%) Reduction in water consumption (%) ≥14 24.4 Water separation (%) ≤100 32.8 Air content (%) <4.5 2.4 Setting time (min) Original >+90 +200 Strength gain (%) 3 days -- -- 7 days ≥125 135 28 days ≥120 132 Compression(%) 28 days ≤135 109 Alkali content (%) ----- 2.35 Alkali content in m3(kg) ≤1.0 0.1 Chloride Ion Content ----- 0.09 Chloride Ion Content in m3(kg) Prestressed concrete <0.02 0.004 Reinforced concrete 0.02~0.20 Ordinary concrete 0.20~0.60 Ammonium content (%) ≤0.1 0 Radiation Internal Exposure Index, IRa ≤1.0 0.13 Internal Exposure Index, IY ≤1.0 0.45 -
They must be stored in designated warehouses in ventilated, dry areas. They must be protected from moisture.
Liquid supplements should be stored at a temperature not lower than 0°C.
