[Terrapreta] Puzzle

[folke Günther]

2008/6/16 Greg and April <gregandapril at earthlink.net>:

>  Not necessarily.
>
> A part of it may be that it's not so much hydrophobic, as the pores may be
> sealed, preventing water entry.
>
> In the paperwork sent to me by Dr. Michael Antal, he and several others
> has studied how temperature affects the pore size, ( and if I understand it
> correctly, many pores may even be sealed, by the effects of high temperature
> 'glazing' ).
>
>
> If this is true, then char may not be truly hydrophobic.
>
As I said.
Greg H.

>
>
> ----- Original Message -----
> *From:* folke Günther <folkeg at gmail.com>
> *To:* Greg and April <gregandapril at earthlink.net>
> *Sent:* Monday, June 16, 2008 11:05
> *Subject:* Re: [Terrapreta] Puzzle
>
> *Since char is a hydrophobic substance (at least, it is not hydrophilic),
> you can not expect water to get into the fine pores. If you wait for some
> time (years), the lump may have broken up and taken up water, but to my
> experience, it is not necessary to wait.
> FG
> *
> 2008/6/16 Greg and April <gregandapril at earthlink.net>:
>
>>  If density is a measure of volume vs. mass, but all the pores are open
>> to water infill, would not the true density be closer to that of water, if
>> they were indeed filled with water?
>>
>> Greg H.
>>
>>
>


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