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.

葡萄糖酸钠能够显著延缓混凝土的起始的和终了的凝固时间。在用量为0.15%以下时，起始凝固时间的对数与配加量成正比例关系，即配加量加倍，起始凝固的时间延迟到十倍，这就使能工作的时间从很少几个小时延长到几天而无损于强度。特别是在热天和需要放置的时间较长时，这是项重要的点。

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.

混凝土不是加工出来就立马使用的，有时候要使用搅拌车运输到工地方能使用，这时候缓凝剂就起到了这样的作用，防止混凝土在运输的过程中就凝结而不能使用。

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.