Precautions for storage of polycarboxylate superplasticizer

Polycarboxylate water reducer is a widely used dispersant in cement concrete, which has not only been widely used in residential construction, but also played an important role in large-scale projects such as highways and bridges. Due to its unique advantages, consumers have high evaluations of it. Although the advantages of polycarboxylate water reducers are very obvious, the following precautions should be taken during use: firstly, avoid long-term contact with iron materials, as polycarboxylate water reducers have acidity. If in long-term contact with iron materials, slow reactions may occur, leading to changes in the performance of water reducing agents. In addition, if stored in a metal container, it should not exceed six months.

Secondly, when using, the amount of water reducing agent and mixed water should be strictly calculated, and the water consumption determined by the laboratory should be followed. Do not arbitrarily increase or decrease the water consumption to avoid adverse phenomena that may affect the normal construction and pouring quality of concrete. Finally, although water reducing agents have little effect on the shrinkage performance of concrete during use, it does not mean that concrete mixed with water reducing agents does not require curing. Early maintenance should be strengthened to prevent the occurrence of cracks. The above are the precautions and instructions that need to be paid attention to during the use of polycarboxylate superplasticizer. It is necessary to pay attention to the above content during construction to ensure the quality and effectiveness of concrete construction.