Toluene diisocyanate manufacturer Knowledge Retarder uses and usage restrictions

Retarder uses and usage restrictions

Retarder uses and usage restrictions

Retarder, retarding water reducing agent and retarding high-efficiency water reducing agent can be used for large-volume concrete, roller compacted concrete, pan construction in hot climate conditions, large-area pouring concrete, concrete to avoid cold joints, Concrete that needs to be parked for a long time or transported over long distances, self-leveling and vibration-free concrete, concrete with slip form construction or pull form construction, and other concrete that needs to delay the setting time. Retarding high-efficiency water-reducing admixture can prepare high-strength and high-performance concrete.
       Retarder, retarded water-reducing admixture and retarded high-efficiency water-reducing admixture should be used for concrete construction where the daily minimum temperature is above 5℃. They should not be used alone for concrete with early strength requirements and steam-cured concrete.

Retarder such as citric acid and potassium sodium tartrate cannot be used alone for lean concrete with low cement content and large water-cement ratio.

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