Gluconate de sodium, acide gluconique, sel de sodium, D - gluconate de sodium, 527 - 07 - 1, retardateur de béton
Gluconate de sodium Détails
Sodium gluconate
Gluconic acid, sodium salt
D-sodium gluconate
Sodium gluconate is an organic substance with a chemical formula of C6H11NaO7. It can be used as a high-efficiency retarder and high-efficiency water-reducing agent in the concrete industry.
Overview
Chemical formula: C6H11NaO7
CAS: 527-07-1
Melting point: 206 C
Appearance: white crystalline particles or powder
Alias: D-sodium gluconate
Index range
Index name Standard
Content 98.0% min
Loss on drying 1.0% max
Heavy metals (calculated as Pb) 0.002% max
Lead (Pb) 0.001% max
Sulfate (SO4) 0.05% max
Reductant 0.5% max
Use
It can be used as a retarder for CSA cement and cement admixture
After adding a certain amount of sodium gluconate to cement, it can increase the plasticity and strength of the concrete, and it has a retarding effect.
Sodium gluconate as water reducer
By adding a water reducing agent, the water-cement ratio (W/C) can be reduced. The following effects can be obtained by adding sodium gluconate: 1. Improve workability. When the water-cement ratio (W/C) remains unchanged, adding sodium gluconate can improve workability. At this time, sodium gluconate acts as a plasticizer. When the addition amount of sodium gluconate is below 0.1%, the degree of improvement in workability is proportional to the addition amount. 2. Improve strength. When the cement content remains the same, the water content in the concrete can be reduced (that is, W/C is reduced). When the amount of sodium gluconate added is 0.1%, the amount of water added can be reduced by 10%. 3. Reduce cement content. The water and cement content is reduced in the same proportion, and the W/C ratio remains unchanged.
Sodium gluconate as retarder
Sodium gluconate can significantly delay the setting time of concrete. When the dosage is less than 0.15%, the logarithm of the initial setting time is directly proportional to the dosage, that is, the dosage is doubled, and the initial setting time is delayed to ten times, which makes the working time from very few The hours are extended to a few days without compromising the strength. This is an important advantage especially in hot weather and when it needs to be placed for a long time.
Packing
25KG/bag
Gluconate de sodium comme retardateur pour le ciment CSA et les mélanges de ciment