Have you used Concrete Hardeners
Have you used Concrete Hardeners
(OP)
My area of expertise is in bridges and other transportation structures, however I was recently tasked with the detailed design for a potable water pump station. I have never even heard of concrete hardeners before as they are not used in bridge construction as far as I am aware. The architect wants to spec a hardener for the floor slab of our pump station. Just wondering what your guys' experience is with concrete hardeners? Do you regularly use them? Do they really provide a benefit? Any specific products you would recommend?
Thanks
Thanks






RE: Have you used Concrete Hardeners
The applicator has to be skilled; there is a chance of messing up and ending up with a slab that delaminates from improper timing or over-trowelling.
Dik
RE: Have you used Concrete Hardeners
RE: Have you used Concrete Hardeners
RE: Have you used Concrete Hardeners
RE: Have you used Concrete Hardeners
Besides the two types of hardeners dik mentioned (which generally are shake-on types) there is also a more moderate system referred to as a "liquid penetrating hardener" such as this one:
Link to SealHard
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RE: Have you used Concrete Hardeners
You could also consider an epoxy coating on the floor.
RE: Have you used Concrete Hardeners
Jayrod: a properly placed hardened slab is much better than a kazillion MPa conc slab with the added shrinkage, noted by Ron.
Dik
RE: Have you used Concrete Hardeners
Although what you say is quite true. The fact that you had to specifically note properly placed is why I try to avoid it unless absolutely necessary. Especially given the description of intended final use. It seems an overall waste of money and effort.
RE: Have you used Concrete Hardeners
RE: Have you used Concrete Hardeners
Dik