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Old 10-12-2013, 09:45 PM
 
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We are trying to find the best concrete mix that can be used to fix foundation cracks that happened due to water damage or settlement. I hope there's something that would provide best water resistance.
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Old 10-13-2013, 12:56 PM
 
Location: Dallas/Ft. Worth, TX
2,451 posts, read 7,239,254 times
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Originally Posted by NY to LA View Post
We are trying to find the best concrete mix that can be used to fix foundation cracks that happened due to water damage or settlement. I hope there's something that would provide best water resistance.
The type, position, size, and location of cracks in the slab should be considered when choosing a repair method. For most cracks I would recommend instead of a concrete or mortar mix to use an epoxy injection method and material. Concrete/mortar type patches do not typically provide the strength of an epoxy injection material. Also epoxy injection as indicated by its name is intended to penetrate deeply into the crack to not only seal the crack but also bond the two sides of the crack back together. Here is an American Concrete Institute (ACI) field guide for strucutural crack repairs using epoxy injection TexAgs.com - Home Improvement . There are various manufacturer's of epoxy injection materials from easy to use to more specialized and more work intensive. Simpson Strong-Tie makes a good epoxy injection material and can be seen here on their site CRACK-PAC® Injection Epoxy - Anchor Systems ~ Simpson Strong-Tie . Simpson Strong-Tie is one of, if not the major leader in various construction materials. Their materials are used on everything from homes to commercial structures.

The epoxy injection method is intended to be correct and long term patching method for crack repairs especially in structural applications.
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Old 10-13-2013, 05:42 PM
 
Location: Dallas/Ft. Worth, TX
2,451 posts, read 7,239,254 times
Reputation: 4196
Quote:
Originally Posted by escanlan View Post
The type, position, size, and location of cracks in the slab should be considered when choosing a repair method. For most cracks I would recommend instead of a concrete or mortar mix to use an epoxy injection method and material. Concrete/mortar type patches do not typically provide the strength of an epoxy injection material. Also epoxy injection as indicated by its name is intended to penetrate deeply into the crack to not only seal the crack but also bond the two sides of the crack back together. Here is an American Concrete Institute (ACI) field guide for strucutural crack repairs using epoxy injection http://www.concrete.org/general/RAP-1.pdf . There are various manufacturer's of epoxy injection materials from easy to use to more specialized and more work intensive. Simpson Strong-Tie makes a good epoxy injection material and can be seen here on their site CRACK-PAC® Injection Epoxy - Anchor Systems ~ Simpson Strong-Tie . Simpson Strong-Tie is one of, if not the major leader in various construction materials. Their materials are used on everything from homes to commercial structures.

The epoxy injection method is intended to be correct and long term patching method for crack repairs especially in structural applications.

Ooops! Wrong link on the ACI document. Sorry about that. This is the link to the epoxy injection document from ACI http://www.concrete.org/general/RAP-1.pdf .
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