Lime Notes:
If you're buying lime, you need to educate yourself regarding the different types of lime, and which is most appropriate for your application.
Ag Lime is basically crushed limestone, used to increase the pH of acidic soil, provide a source of calcium for plants, and improve the water penetration in acidic soils. The lime you buy in horse supply stores is generally designed as a pasture soil amendment or a horse stall bedding underlayment. Ag lime can be used to reduce algae growth in ponds, and as it is generally very fine, some people also add to crushed stone for roadwork and foundation work, or use it as a substitute for portland cement when putting in fence posts (it gets hard, but can pass water, and can also be easily broken up).
Hydrated Lime, on the other hand, is essentially crushed limestone that has been heated to 900-1200 degrees Centigrade and higher to drive off the H20. Read about the "Lime Cycle" and a more detailed explanation of the different types of lime here:
http://www.wealddown.co.uk/Magazine/Spring%202000/magazine%20march%2000%20dry%20hydrate.htm
Hydrated lime is primarily used by brick masons, usually type S Hydrated Lime when making masonry mortar. For one, it increases the workability and plasticity of the mix.
Most papercreters, I believe, are using hydrated lime as an additive, probably for a variety of reasons that include workability and mold inhibition, or for more final finish applications. If you're using lime in your papercrete mix, what are your reasons??
The key point here is to to first understand why you're buying lime, and then make sure you buy the kind of lime that will meet your needs.
best,
Eric Randall
Fairfield, Iowa
At 02:42 PM 6/24/2008, you wrote:
It would be available wherever one would buy horse supplies. Tractor Supply, etc. We use it in the stalls and it's inexpensive. It's usually available as powder or in a pearlized form.__._,_.___
Clarissa
Greg House <ghunicycle@yahoo.com> wrote:
- I don't know about your area, but the big box stores here in Kansas don't appear to stock lime, only premixed things. You can get portland, concrete mix, or bagged mortar mix (which contains some lime), but I have yet to see a bag of pure lime. I haven't looked extensively, but so far I haven't found it at any at the regular hardware type places I go.
- Greg
- ----- Original Message ----
- From: JUDITH WILLIAMS <williams_judith@hotmail.com>
- To: papercreters@yahoogroups.com
- Sent: Monday, June 23, 2008 10:22:25 PM
- Subject: RE: [papercreters] Lime
- You can get it at any big box store or home center in the masonary department, near the cement.
- Sincerely, Judith
- Visit my papercrete website at www.judith-l- williams. com.
- "Never be afraid to try something new. Remember, amateurs built the Ark. Professionals, on the other hand, built the Titanic." Author unknown.
- To: papercreters@ yahoogroups. com
- From: hnegaard@qwest. net
- Date: Tue, 24 Jun 2008 00:19:27 +0000
- Subject: [papercreters] Lime
- Hi all,
- I am looking to purchase lime for papercrete. Does anybody have a
- vendor that they would recommend?
- Or is this something I can get at a agricultural store?
- Thanks!
- Heather
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