Cob:lime misinformation> was wattle wall

[GlobalCirclenet]

Another good link in explaining is below-

http://www.restorationtrades.com/articles/art30.shtml

HYDRATED LIME, QUICKLIME, LIME PUTTY
Do you know the difference? Are you sure it really matters?

By Mike Edison of Edison Coatings. Member of the Restoration Trades
Exchange.
Republished from the Autumn issue of Edison Coatings Update.
excerpt-follow link for full article (short)
"To gain a clearer understanding of the differences between hydrated lime
and lime putty, we started by looking into the manufacturing processes by
which they are made. Both begin as limestone, which is composed primarily
of calcium carbonate and contains varying proportions of magnesium
carbonate with minor amounts of other minerals. The rock is calcined at
temperatures near 10000C (18000F), which drives off chemically combined
carbon dioxide."


barb - on the continental divide
http://globalcircle.net



*********** REPLY SEPARATOR  ***********

On 10/12/2002 at 10:45 AM Charmaine R Taylor wrote:

>Myrna said: Hydrated lime is not used for organic gardening and is on 
>the no-no list because of its chemically derived state.
>
>+++++++++++This is simply not true...lime is inert, and it is only
>crushed, heated and slaked, there is no "chemical" processing other than
>the exothermic reaction when heat is given off during slaking, and that is
>at the factory.   The NO NO part may simply be the fact that is it
>production process and and requires fuel to heat it...not for any other
>reason.
>
>Lime IS very drying to the skin and can burn sensitive people, always wear
>protection.
>
>Actually in the 1920s hydrated lime was used for gardening, is neutralizes
>acidic soil, as  simple crushed lime is  not going to react with the soil
>AT ALL.
>
>Dolomitic lime is just one type of lime based on it's origin, the US has
>lots of dolomitic lime , and  high calcium lime is found in the US and
>Europe. The Dolomite Mt. ranges are dolomitic lime.
>
>Hydrated lime combines with the soil to stabilize, neutralize   and "
>sweeten" it, making it better for growing.   Crushed lime, Ag lime-- is
>just a ground filler, not going to do anything by separate particles,
>which is a small assistance to the gardener.
>
>There is a lot of misinformation on products out there, and lime is the
>biggest one.  It doesn't hurt to use just Ag lime, but it doesn't do much
>either, and it is cheap.  You can get crushed gypsum wall board from
>deinstallers and add that to a garden and it does the same thing..as a
>filler to break up clay.
>
> My comments come from extensive research in the history of lime use in
>the US, plus documentation by the National Lime Assn. 
>
>Powdered hydrated lime spread on the garden and raked in will do much more
>than Ag lime, but ALL people should  wear gloves and goggles due to the
>drying nature. LIme is not toxic or harmful, bust harsh to skin.
>
>Actually people EAT lime all the time..look on a package of TUMS and see
>the ingredient..calcium carbonate..lime..food grade, to neutralize
>acids..just like it does for the soil.
>
>I recommend people read the free info on the web on lime to learn more.
>
>National Lime Association at http://www.lime.org
>
>
>Lime Online italy at http://www.limeonline.it
>Has many good articles in English
>
>Consortium of producers-
>http://www.e-limecementgypsum.com/
>
>J & J Sharpe are Lime specialist suppliers and contractors. 
>http://www.jjsharpe.co.uk/
>
>Limewash
>http://www.buildingconservation.com/articles/awash/awash.html
>
>Battersby Ornamental Lime Plasters-restoration:
>http://www.battersbyornamental.com/
>
>AU- Lime over SB renders Article:
>-http://barney.webace.com.au/~agstraw/lime.html
>
>Natural Cement , at http://www.naturalcement.com, is all about a
>unique European imestone with amazing properties of fast hardening.
>
>Articles on Pozzolans (clay binders for lime) The best site is
>theNational Parks Service online at http://www2.cr.nps.gov/tps, an
>excellent list of preservation and restoration articles, many are good for
>natural
>building. Also see this article at 
>http://www.qcl.com.au/pozz/tech/poz_tncn.htm
>
>
>Ms. Charmaine  Taylor/ Taylor Publishing
>http://www.dirtcheapbuilder.com
>http://www.papercrete.com
>PO Box 375, Eureka  CA 95534
>books at dirtcheapbuilder.com
>707-441-1632