Sodium gluconate has many functions, so it is used in all walks of life. The main application industries are construction, textile printing and dyeing, cleaning and so on. So did you know that it can also be used as a release agent in concrete.

葡萄糖酸鈉能夠顯著延緩混凝土的起始的和終了的凝固時間。在用量為0.15%以下時，起始凝固時間的對數與配加量成正比例關系，即配加量加倍，起始凝固的時間延遲到十倍，這就使能工作的時間從很少幾個小時延長到幾天而無損于強度。特別是在熱天和需要放置的時間較長時，這是項重要的點。

Sodium gluconate can significantly delay the initial and final setting time of concrete. When the dosage is less than 0.15%, the logarithm of the initial solidification time is in positive proportion to the dosage, that is, the dosage is doubled and the initial solidification time is delayed to ten times, which prolongs the working time from a few hours to a few days without damage to the strength. This is an important point, especially in hot days and when it needs to be placed for a long time.

混凝土不是加工出來就立馬使用的，有時候要使用攪拌車運輸到工地方能使用，這時候緩凝劑就起到了這樣的作用，防止混凝土在運輸的過程中就凝結而不能使用。

The concrete is not used immediately after processing. Sometimes it needs to be transported by mixer truck to the work place for use. At this time, the retarder plays such a role to prevent the concrete from setting during transportation.