How to clean cement mortar

1, a variety of weak acid cleaning can be removed, such as oxalic acid, acetic acid, etc.

2, special cleaning agent cleaning, but the cost is higher.

3, temporary cement mortar pollution, timely cleaning with a slightly wet rag can be.

4, if the use of acid and alkali prone to safety accidents. And it will corrode its own objects, it is best to wait until it hardens, and then directly scrape it off.