So, this looks very similar to stone consolidants, except that
they are not carried in a solvent (methanol). Would the colliodal silica type of
concrete densifier be okay for stone? I assume for siliceous stones? What
happens adding silica to calcite stones. I have done this (consolidants on
limestones) and had a good result, really did seem to harden ultra soft stones.
From: Fred Hueston
[mailto:fhueston@gmail.com]
Sent: Friday, July 09, 2010 9:32 AM
To: Restoration and Maintenance; nulifesc@bigpond.com
Subject: Re: [sccpartners] Densifiers
Here is an excellent article on densifers....Please be aware
that there are different types of densifers.Some work on calcium based stones
while others work on silicious materials like granite.
http://www.lythic.net/documents/ConstructionSpecificer0309_MakingSenseofDensifiers.pdf
On Thu, Jul 8, 2010 at 6:52 PM, Mike Marsoun <nulifesc@bigpond.com> wrote:
Would love to hear the results on limestone, and if lithium
or potassium silicate work better on stone than sodium silicate. Lithium silicate
does not have to dwell. What also would be good is a discussion on the
difference between consolidants (collidial silica) and densifiers.
Sent via BlackBerry® from Telstra
-----Original Message-----
From: "John Freitag" <jfreitag@thestoneandtileschool.com>
Date: Thu, 8 Jul 2010 15:15:15
To: Restoration and Maintenance<sccpartners@stoneandtilepros.com>
Reply-To: "Restoration and Maintenance" <sccpartners@stoneandtilepros.com>
Subject: RE: [sccpartners] Densifiers
Adam,
Dr. Fred can probably give you a more scientific expatiation but here what I
know. Concrete Densifers work with the free lime in the concrete and during
the dwell time the densifier actually hardens the concrete. The best results
I have is putting the densiflier down on the concrete or on cement based
terrazzo and allow the produxt to dwell for at least 45 to 50 minutes, all
the time making sure the surface stay wet. You can add some water if
necessary to maintain a wet surface. After the dwell time use a wet vac pick
up any product on the surface. Then take a finish mop and lightly mop on a
very thin coat of the densiflier and allow to dwell over night at least 60
to 8 hours. Then complete you honing. If you are using this the best time to
add it to the surface is after your 220 grind.
I have used this on a honed finish Durango stone and it work well. The
finish Durango stone has cement fills therefore the densiflier is working on
those areas. I have not tried it on natural stone but will this next week
Look for Dr. Fred chemical reaction comments, I'm sure he can give more
detail than I can
John E. Freitag
President/Director
The Stone and Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
www.thestoneandtileschool.com
-----Original Message-----
From: info@restoreyourtiles.com
[mailto:info@restoreyourtiles.com]
Sent: Thursday, July 08, 2010 2:18 PM
To: Restoration and Maintenance
Subject: [sccpartners] Densifiers
Can someone explain to me how densifiers work? What is the benefit of using
them?
Can they be applied not only to cement based products but to different
materials like limestone or travertine?
What is the difference between sealer and densifier?
Adam Bartos
BiO Tile and Grout Restoration
773-575-5515 (c)
Sent via BlackBerry from T-Mobile
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Frederick M. Hueston PhD
www.stoneforensics.com
www.stoneandtilepros.com
Recommended stone care products http://www.stonecarecentral.com/?Click=2149
Many of my informational articles can be found at www.thestonedude.blogspot.com
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