| Author |
Message |
Chris Grimm, CSI, CCS, SCIP, LEED AP BD+C, MAI
Senior Member
Username: chris_grimm_ccs_scip
Post Number: 284
Registered: 02-2014
| | Posted on Sunday, November 02, 2014 - 01:28 am: |    |
Has anyone used consolidation treatment on a project to strengthen weathered masonry or stone? I understand they can vary in effectiveness and in how much it alters the appearance of the stone or masonry. Can it help correct deficiencies to structural integrity or is it time to start over with new matching stone or masonry when structure is involved? |
Mark Gilligan SE,
Senior Member
Username: mark_gilligan
Post Number: 695
Registered: 10-2007
| | Posted on Sunday, November 02, 2014 - 07:38 pm: | |
Please explain what you mean by consolidation treatment of masonry or stone? |
Jeffrey Wilson CSI CCS SCIP
Senior Member
Username: wilsonconsulting
Post Number: 155
Registered: 03-2006
| | Posted on Sunday, November 02, 2014 - 09:17 pm: | |
Chris, have you looked at MasterSpec's Evaluations on the topic (Section 040345 "Historic Stone Consolidation Treatment")? They suggest considering chemical consolidation or impregnation treatments only if stone deterioration is so extensive that replacement is impractical or if saving the original stone is desired. They also state that consolidation treatments to restore stone strength have had limited success -- mostly by trial-and-error.
Jeff Wilson
Wilson Consulting Inc
Narberth PA |
Mark Gilligan SE,
Senior Member
Username: mark_gilligan
Post Number: 696
Registered: 10-2007
| | Posted on Monday, November 03, 2014 - 05:46 am: | |
Structural building code provisions regarding masonry and stone do not address the use of products that coat or impregnate stone or masonry. I would limit the use of such products to addressing non-structural concerns. |
Brett Scarfino (Unregistered Guest)
Unregistered guest
| | Posted on Monday, November 03, 2014 - 09:36 am: | |
Chris:
We considered consolidation one time for a very unique stone. It was not perused beyond the initial product research. Search The Getty Conservation Institute - Epoxy Resins in stone conservation (link below).
http://www.getty.edu/conservation/publications_resources/pdf_publications/epoxy_resins_in_stone.html |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 840
Registered: 12-2006
| | Posted on Monday, November 03, 2014 - 11:43 am: | |
Chris, I've successfully used a product called HLQ 125 by Sinak on a number of projects. It's a hydrolyzed lithium quartz in solution. Be careful to test it on several areas not too visible as the manufacturer states that it can cause some visible change. Never happened on any of my projects but I take warnings like that seriously. Let me know if you need the DC rep's contact info.
The nicest thing about it is that it does not, to my knowledge, affect vapor permeability of the stone. Here's a link - http://www.sinakcorp.com/products/masonry-concrete.asp |
Chris Grimm, CSI, CCS, SCIP, LEED AP BD+C, MAI
Senior Member
Username: chris_grimm_ccs_scip
Post Number: 286
Registered: 02-2014
| | Posted on Thursday, November 06, 2014 - 01:17 pm: | |
Jeffrey, yes the Supporting Documents in MasterSpec was the first place I went, and quite a bit of online research. I will pass this information along to the Owner to consider reviewing with the structural engineers they are interviewing. It sounds like they would need to consider it a non-structural part of the solution to help avoid further weathering of additional stone beyond that which will have to undoubtedly be replaced with matching stone as a structural part of the repairs.
Thanks all for the great input. Ken the project is in Indiana, and actually some news for my friends here, I have relocated back to my hometown. It's great to have some more time with family now. This is not the limestone capital of the world part of Indiana with Bedford/Oolitic limestone, but rather the stone native to the Whitewater Valley Gorge that is probably a bit softer, shell type of limestone. |
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