Do geopolymers have the same issues with cold joints

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pigbuttons
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Posts: 156

Do geopolymers have the same issues with cold joints Feb 18, 2018 7:18:04 GMT -8

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Post by pigbuttons on Feb 18, 2018 7:18:04 GMT -8

When working with portland cement base concrete "cold joints" where two pours of concrete meet is a weak point in adhesion and for best strength a bonding agent must be applied prior to the second pour. I've seen youtube videos where geopolymers are used as an adhesive so I'm thinking that there shouldn't be a problem, but under the temps of a rocket stove is there a probable issue? My j-tube design will be much easier to cast in several steps rather than as a monolith so I'm curious if there is any major drawback to multiple phases. The interfaces will be two inches wide, 8 inches long, and at right angles like at the bend in an "L", the bottom poured first, then the wall.

branja
New Member

Posts: 25

Do geopolymers have the same issues with cold joints Feb 22, 2018 4:37:02 GMT -8

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Post by branja on Feb 22, 2018 4:37:02 GMT -8

Im interested in this one. "Gluing pieces together" shud make building a stove easy as "lego". I think it wud be like a "adhesive" not like a "weld" since a true GP would not dissolve in acid or a base.
GP mortar?

Last Edit: Feb 22, 2018 5:04:10 GMT -8 by branja

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