Quick question which is what is water Putty and Portland cement used for and back...way back in the day what was it used for?
The British give this name to modern day cement. Ordinary Portland cement,sulphate resistant cement, white cement and Grey cement and so on. Most have chemical name but Portland is a patent name.
Water putty is a putty that will harden even if it is underwater. You would usually use it repairs under water. Pools, pipes, ETC Portland cement is used to make concrete. Concrete usually has the cement and some type of hard particles ( sand, small rocks, or both)
