Water dissolve 1

[ekincia]

I am not sure if I am writing on correct section. Does any one know at what pre sure air dissolves in water. As far as I know it's around 200 kpa is that correct

 

[Unotec]

Air dissolves in water at ambient pressure alright, that's how fish breathe. Doesn't it?

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying ” Damn that was fun!” - Unknown>>

 

[dgillette]

Is this for back-pressuring triaxial tests? If so, to reliably get rid of practically all the bubbles (like 98 percent saturation), it will probably take a lot more than 200 kPa. See if you can get ahold of Corps of Engineers manual EM-1110-2-1906 "Laboratory Soils Testing." In the 1970 edition that I have, Figure 15 of Appendix X shows how the required pressure varies with initial degree of saturation.

http://140.194.76.129/publications/eng-manuals/em1110-2-1906/toc.htm

Regardless, as Unotec says, SOME air will dissolve in water at almost any pressure, but the amount varies tremendously with temperature and pressure.