| High Reactive Metakaolin |
| 02-19-2007 07:04:13 |
Member
Posts: 24
Joined: 02-18-2007
|
Hey guys I see that no one here uses Metakaolin in there mixes. I replace 15% of my portland cement with Metakaolin, note I said REPLACE. Metakaolin will add a significant boost to the compressive and flexural strength to your concrete. Concrete that normally has a compression strength of 5000 psi. can be boosted to a compresive strength of over 10,000 psi. Metakaolin will also greatly reduce staining and acid staining from lemon juice, vinigar ect. Note concrete that contains metakaolin will not take an acid stain. You should still however seal your countertops.
|
|
|
| 02-19-2007 08:04:15 |
Member
Posts: 97
Joined: 12-05-2006
|
Where do you buy your metakaolin?
|
|
|
|
| 02-19-2007 11:24:57 |
Member
Posts: 309
Joined: --
|
I use it.
|
|
|
|
| 02-19-2007 13:15:29 |
Member
Posts: 24
Joined: 02-18-2007
|
dcathey you can get Metakaolin from the concretecountertopinstiture.com you have to call them though.
|
|
|
|
| 02-19-2007 13:16:29 |
Member
Posts: 24
Joined: 02-18-2007
|
oops try this. concretecountertopinstitute.com
|
|
|
|
| 02-20-2007 06:01:37 |
Member
Posts: 5
Joined: --
|
You can also get it at www.concretedepot.net
|
|
|
|
| 02-21-2007 11:26:48 |
Member
Posts: 309
Joined: --
|
Geeze 40 lbs. for $60 . You can buy this from W.R. Grace but the smallest unit they sell is a pallet. However, I don't remember the price but it was pretty cheap. A pallet would give you a lifetime supply.
|
|
|
|
| 02-21-2007 21:21:56 |
Member
Posts: 86
Joined: --
|
Its about $16.00 a bag in pallet form and a pallet lasted me about 8 months or so doing avg 75 to 100 sq ft a week of ctops.
I also acid stain my GFRC concrete with no trouble.
With my mix design the finished product is so dense there are no pin holes before or after grinding and if I do get any there are only a hand full meaning no slurry coating ect.
Jim r
ECDS
|
|
|
|
| 04-24-2007 18:56:42 |
Member
Posts: 6
Joined: 04-24-2007
|
I use MetaMax by Englehard. I have used a few different pozzolans, and like the MetaMax the best. Go to
http://www.engelhard.com/wrapper.aspx?xml=engelhard
to get contact info on a distributor near you. I purchase mine from near Dallas. It cost me about $150 each time I buy. Don't fall over when the cost seems high for the weight it goes a long way.
|
|
|
|
| 04-25-2007 09:56:05 |
Member
Posts: 309
Joined: --
|
I believe the concretedepot.com sells it. I replace 10% cement with kaolin. The weight difference is significant.
|
|
|
|
| 04-26-2007 06:43:03 |
Member
Posts: 97
Joined: 12-05-2006
|
what is the name of the Grace product? i am going to call a sales rep and just wanted to be able to shorten the deal.
|
|
|
|
| 04-27-2007 05:37:05 |
Member
Posts: 24
Joined: 02-18-2007
|
Hey guys!! I have found a new place to purchace Metakaolin. Go to directcolors.com. They have it but you have to call them. They sell MetaMax. It will run you about $45.00 per 50 lb. bag. I have found the metamax to be far more superior than Power Poz. Its ground finer. The phone number is on their web site.
|
|
|
|
| 08-29-2007 12:16:55 |
Member
Posts: 11
Joined: 08-27-2007
|
I just got off the phone with the production manager at Directcolors and he informed me that they only sell Metamax to distributers. He was willing to make me a "deal" but his price was not so much of a deal... $110 plus shipping for a 55# bag. I declined.
Anyone else have an idea of where to get Metamax? I would like to compare it to the PowerPozz.
|
|
|
|
| 02-11-2008 16:45:20 |
Member
Posts: 25
Joined: 02-09-2008
|
You can get 40# bags of Metakaolin for $27.95 from Concrete Countertop Supply by the bag. We replace 15% of our cement with it and it works great!
Go to www.concretecountertopsupply.com to find ordering info...or call them at 847-648-3474
|
|
|
|
| 02-20-2008 08:45:41 |
Member
Posts: 25
Joined: 02-20-2008
|
QUOTE imagine, 2007-04-27 05:37:05 Hey guys!! I have found a new place to purchace Metakaolin. Go to directcolors.com. They have it but you have to call them. They sell MetaMax. It will run you about $45.00 per 50 lb. bag. I have found the metamax to be far more superior than Power Poz. Its ground finer. The phone number is on their web site.
How do you measure the performance of Metakaolin powders? We currently use PowerPozz and are looking to switch to Vitro Minerals when we find a way to monitor the differences.
Thanks!
|
|
|
|
| 02-21-2008 04:50:43 |
Member
Posts: 8
Joined: 12-24-2007
|
Stupid question here, but could one use non-shrink grout instead of the p-poz or metakaolin? What are the pro's and/or con's of using a mix with a high percentage of non-shrink grout included in the mix?
|
|
|
|
| 02-21-2008 11:50:47 |
Member
Posts: 97
Joined: 12-05-2006
|
I maybe mistaken...cannot be for sure about the grout but pozzolons offer better particle packing ability as they are smaller particles and when they combine with cement sand agg etc you get tighter mix from better gradation.
|
|
|
|
| 03-06-2008 12:24:31 |
Member
Posts: 25
Joined: 02-20-2008
|
Is Metakaolin compatible with all types of cement?
I am having issues with severely elongated curing times using gray type II-V and 15% metakaolin and 8% pigment loading.
Using an overnight curing cycle which is normally 1400psi is giving me a tray full of brownies the next day.
Any suggestions? I have used metakaolin successfully with white type I for awhile, but for a better color enhancement, I'm experimenting with gray cement and banging my head against the wall....
|
|
|
|
| 03-06-2008 12:25:11 |
Member
Posts: 25
Joined: 02-20-2008
|
Is Metakaolin compatible with all types of cement?
I am having issues with severely elongated curing times using gray type II-V and 15% metakaolin and 8% pigment loading.
Using an overnight curing cycle which is normally 1400psi is giving me a tray full of brownies the next day.
Any suggestions? I have used metakaolin successfully with white type I for awhile, but for a better color enhancement, I'm experimenting with gray cement and banging my head against the wall....
|
|
|
|
| 03-11-2008 09:08:37 |
Member
Posts: 25
Joined: 02-20-2008
|
Issue resolved.
|
|
|
|
| 03-26-2008 10:49:48 |
Member
Posts: 10
Joined: 02-20-2008
|
Hi aaron, Just curious. I am casting concree tiles and using 10%metalaolin and no more than 5% pigment and am also experiencing elongated curing times. You say "issue resolved". What did you do?
Libby
|
|
|
|
| 03-27-2008 09:31:14 |
Member
Posts: 25
Joined: 02-20-2008
|
I was experimenting with SCC, and my Superplastisizer levels slowly crept up through expirmentation, and before I knew it, it was way out of whack.
That was an exhausting mistake... Absolutely nothing to do with the Metakaolin.
|
|
|
|
| 03-27-2008 09:32:02 |
Member
Posts: 25
Joined: 02-20-2008
|
I was experimenting with SCC, and my Superplastisizer levels slowly crept up through expirmentation, and before I knew it, it was way out of whack.
That was an exhausting mistake... Absolutely nothing to do with the Metakaolin.
|
|
|
|
| 03-27-2008 19:01:08 |
Member
Posts: 10
Joined: 02-20-2008
|
Interesting. I'll have to be more careful. I've certainly upped my dose of SuperP since I've started using the metakaolin. I cast concrete mosaics, essentially a mortar mix, and I was quite happy with a .32 water/cement ratio. The shapes I cast are small and geometric and I need flow to place the concrete. I am basically slip casting concrete. But the metakaolin gummed it up a bit so I've been adding more SP. I obviously have room to play with my water content. Guess I have a little more adjusting to do.
thanks for cluing me in,
Libby
|
|
|
|
| 04-02-2008 15:41:50 |
Member
Posts: 25
Joined: 02-20-2008
|
Slip casting sounds interesting! Any pictures?
|
|
|
|
| 04-03-2008 10:14:18 |
Member
Posts: 10
Joined: 02-20-2008
|
Hi Aaron,
Go to Polished Concrete forum page 3 and look for "finishing concrete mosaics". I have 1 picture there. That's 28 pieces in 6 sq. inches. tedious as hell. I'm starting to scale up my designs so I can finish them in the shop but there's still something wonderful about a monolithic polish so I may still try to get down on my hands and knees...
Libby
|
|
|
|
