What is the difference between retarder and sodium gluconate? Must see

Our retarder is a product tailored based on the characteristics of current commercial concrete to delay the setting time of concrete and enable concrete to maintain plasticity for a longer period of time. It can cope with various conditions with poor adaptability. Cement differences ensure the pumping performance of the pumping agent. Glucosodium is a type of retarder and a commonly used retarder product. At the same time, the retardant can completely replace sodium glucoside in the compound, and the price is lower than sodium glucose, and the cost-effectiveness advantage is very high.

What is the difference between liquid sodium gluconate and powdered sodium gluconate?

The difference is the difference between solid and liquid states, as well as the difference in dosage and effect, such as liquid Sodium gluconate is generally packaged in barrels, with a specification of 250kg/barrel. It uses a relatively large amount and has a faster effect; it is available in powder and liquid. The amount of sodium gluconate used in the powder is less, because most of the products in the powder have relatively concentrated properties, and the dosage is mostly a few grams/%. In order to exert its effect, it needs to be mixed with concrete materials and mixed with water, but the gluconic acid in the powder is Sodium is much more convenient to transport than liquid. If there is a lot of liquid, it is recommended to transport it in surrounding cities.

How to quantitatively determine the content of sodium gluconate in concrete admixtures

It should be said that there is no This simple-to-use technique cannot be performed in ordinary concrete laboratories and requires specialized equipment.

Four commonly used sodium gluconate detection methods: HPLC method, spectrophotometry, non-aqueous titration method and optical polarization method.

Let me tell you one:

Accurately weigh 0.15g of sodium gluconate into a 250ml Erlenmeyer flask, add 75ml of glacial acetic acid, and heat to dissolve it. Cool, add quinaldine red indicator, and drip with 0.1 mol perchloric acid standard solution until colorless is the end point. 0.1mol perchloric acid standard solution per milliliter is equivalent to 21.81 mg sodium gluconate. This method is fast and accurate, but the disadvantage is that it uses glacial acetic acid as the solvent, which is easy to crystallize in winter, bringing some inconvenience to the analysis operation

Performance of retarder products

1. This product is used To adjust the setting time of concrete, the dosage and usage method are the same as those of conventional retardant materials. The dosage can be adjusted reasonably according to the ground material and temperature in each region.

2. This product can reduce the slump loss of concrete over time and adjust the workability of concrete.

3. This product can adjust the adaptability of cement and water-reducing agent.

Retardation performance: delay the initial and final setting time >8h (extended with the collapse time);

Mechanical properties: This product has no adverse effects on the mechanical properties of concrete;

Adaptability: This product can be used in combination with various high-efficiency water-reducing agents, and has functions such as retarding, dispersing, and slump retention;

Retarder and sodium gluconate are both Common methods of delaying the setting time of concrete can be replaced in equal amounts in industry, but the cost-effectiveness of retarder is relatively higher

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