Why is 砼 considered to be dated? I saw the word 商砼 written all over a large vehicle but Pleco Basic Chinese-English Dictionary defines 砼 as:


  NOUN
  DATED
  concrete 


I'm curious as to why they say 砼 is dated, I couldn't find a lot of other information about this. The character seems very much in use. 

Any ideas?
I do not think it is dated, I have been seeing this characters in company names as well.

The character 砼 is invented as a substitute for word 混凝土，which is often used but complicated to write. 砼 means 人工石，which is what concrete is.

You can look at 百度百科 and other resources to find information on it.