What I would like people to read in my previous comment is that when you make chemical changes or phase changes you can create more dangerous stuff than if you have an inert solid substance for which you only do a mechanical physical change.
Anyway, there are more important things … I don’t want you to waste too much time on this.
I wish you happy holidays (despite the state of the world). Take care.
Yes, of course I know for cement … but you know : my comment was about gravel (agregates in the picture) and in concrete you have aprox. 10% cement.
(i have also wrote another comment about cement and carbon dioxide elsewhere in this post)
What I would like people to read in my previous comment is that when you make chemical changes or phase changes you can create more dangerous stuff than if you have an inert solid substance for which you only do a mechanical physical change.
Anyway, there are more important things … I don’t want you to waste too much time on this.
I wish you happy holidays (despite the state of the world). Take care.
Concrete literally involves chemical changes. How exactly do you think they get the lime?
Yes, of course I know for cement … but you know : my comment was about gravel (agregates in the picture) and in concrete you have aprox. 10% cement.
(i have also wrote another comment about cement and carbon dioxide elsewhere in this post)