crack injection: 100% solid epoxy Vs 2-part epoxy

agguFebruary 12, 2008

Whats the difference between 100% solid epoxy and 2-part epoxy? I need to inject couple of cracks in our basement and two companies i contacted for this work use these 2 different materials for injection. Was wondering which one is better? What are pros and cons of each?

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bus_driver

One part is the epoxy resin. The other part is the hardener/catalyst. This is true for both systems. To reduce cost, fillers are often used in the epoxy. Steel dust is popular and is used in JB Weld. 100% would have no fillers. The proper filler in the proper amounts does not degrade strength very much. Wrong filler or too much is big problem.

    Bookmark   February 13, 2008 at 11:30AM
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mikie_gw

Every epoxy I've used is two part but once mixed is a single mixture.

Really good stuff is 50/50 mix epoxy.. Cheap comparitively is polyester epoxy with a very small amount of hardener in the mix, about 10/1 ratio.

What kind of material has this crack you are you filling ?

    Bookmark   February 13, 2008 at 11:39AM
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bus_driver

"Polyester epoxy" does not exist. It is one or the other. Epoxy is the more expensive and has bonding strength of about 5 times that of polyester. Regular Bondo is polyester.

    Bookmark   February 13, 2008 at 5:01PM
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