I am building a wall with the Benders Megawall system. Their cornerstones don't have tabs that interlock with each other, so Benders recommends gluing them together.

Corners of a wall are particularly exposed, so you want them to be secure.

The last corner I set up was anchored with reinforcement bars and concrete. Perhaps a bit excessive, so I'm wondering: How strong is concrete adhesive really? Is this how masons do it?

I have bought a bottle of Illsbruck PU700 which is intended for the purpose, but will it hold even in five years? 10? 20?
 
  • Building a retaining wall with Benders Megawall system, corner stones without interlocking lugs, surrounded by gravel and construction materials.
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