Cementitious open time Test

[Julian 'Farmer' Bonsall]

If you want another giggle

Sorry Plan Tec I had completely missed this post of yours - personally I think his tamping stick is patentable and needs branding. The chap with the 'adhesive hands' is a brave one

 

[Old Mod]

From the manual.
Concrete shall not come in contact with any
aluminum during conveying and placing
operations.


Aluminum Frames in Masonry Walls - http://www.cement.org/learn/materials-applications/masonry/masonry-construction/aluminum-frames-in-masonry-walls

View attachment 98073

Apologies Julian,
Couldn’t find your response, lost track of the thread.
What I’d like to know is about the relationship between Portland cement (used in adhesive) and aluminium when they come in to direct contact with each other.
I know that when grouting heavy machinery legs into a concrete base, Aluminium powder is added to the grout to encourage the grout to expand and lock the machinery in place. However, I also know that as a byproduct, Hydrogen gas is created.
This and it’s possible effects on tile adhesive are the subjects I’m interested in.
Oh, one more thing, is it possible to prime against a reaction taking place?

Thank you for the link, I only hope I find time to read it, I was kinda hoping I could cheat and get the short version from you as you’ve worked in this area.
My turn to pick your brains, a little reciprocation if you will.