Final answer:
Grout should not be pumped through galvanized steel pipes due to the potential for chemical reactions that can lead to corrosion and compromise the grout's integrity. PVC, cast iron, and stainless steel are generally acceptable materials for pumping grout.
Step-by-step explanation:
When dealing with the application of grouting in construction, it is important to understand the properties of the materials that come into contact with the grout. Grout is a mixture primarily made of water, cement, and sand, and it is used to fill voids and seal joints, such as those between tiles. Certain types of pipes can react with grout and cause problems.
For instance, galvanized steel can react with the alkaline substances in grout, which can lead to corrosion and weaken the grout's structural integrity. Hence, it is generally advised that grout should not be pumped through galvanized steel pipes. On the other hand, materials like PVC, cast iron, and stainless steel are more resistant to such reactions and are usually safe for transporting grout.
As for the items listed such as water pipes, electrical conduits, and various containers and bottles, these are examples of everyday uses for specific materials like PVC, but they do not directly relate to the guidelines for pumping grout.