CONCRETE CHEMICAL ADMIXTURES AND METHOD FOR NONTOXIC CONCRETE USED RECOVERED REMICON WATER

摘要

According to the present invention, concrete chemical admixtures may be manufactured, and thus nontoxic concrete to which concrete recovery water is added by using the concrete chemical admixtures. When concrete is manufactured, the concrete chemical admixtures may have the same or higher performances in material property and durability of concrete in comparison to the existing chemical admixtures. Also, bubbles generated by the added concrete recovery water may be stabilized to reduce an amount of fine particles contained in the concrete recovery water, thereby increasing durability, water tightness, and production efficiency of concrete. Also, the concrete chemical admixtures may be used to adjust pH of the concrete. Here, toxicity due to strong alkalinity of the concrete may be adjusted to neutral pH, and thus nontoxic concrete may be manufactured. Typically, cement has to be additionally added to secure strength when the concrete recovery water is added to manufacture concrete. However, according to the present invention, the concrete may secure strength without additionally adding the cement to reduce production cost.