Just got this batch of cool photos (click pics for larger view) of the newly constructed Tse’bii’nidzisgai Elementary School in Monument Valley, Utah. I wanted to put the correct pronunciation of that exotic name in parenthesis following it — but try as I might to dig it up on the web, no phonetic transcription was forthcoming.
I think it’s Navajo. If you can pronounce it, leave a comment on the blog, or e-mail me at firstname.lastname@example.org. I would love to know.
Inside, the school’s floors are polished concrete, hardened, densified, colored and protected with Consolideck products.
Hogan & Associates Construction, Centerville, Utah, built the school. They also created the polished floors and colorful courtyard, rather than subbing out the work. Border Construction Specialties provided the Consolideck products out of their Flagstaff branch.
I’m working on getting more details and photos for a full story, but wanted to share these great pics. I got them from Bruce Ferrell, who is part of our Concrete Products Group. He got them from Hogan & Associates Project Engineer Jared Buckley.
Bruce showed up at the jobsite in response to a trouble call. The ColorHard on the outside courtyard (top photo) was drying out before it had a chance to penetrate the concrete. The concrete was so dry that it instantly sucked down the water-component of the ColorHard solution, leaving the color and hardener/densifier to dry on the surface.
This was in July, when daytime temps get around 100 degrees F, and sun-heated concrete gets as hot as 140 degrees, Bruce said. Even though the crews were applying the ColorHard between 5 and 6 am, before the heated winds kicked up, they still had trouble with warmth and excessive dryness.
Bruce showed them how to compensate for the extreme conditions. The first fix was to replace the LS (lithium-silicate) hardener/densifier used to mix with the ColorHard dye with LS/CS, which is a thinner, though still effective hardener/densifier.
He also recommended boosting the water content of the mix.
When doing that, though, always use filtered or distilled water, Bruce says. Tap water may contain chemicals and minerals that can affect the densifier. Construction-site water is often really bad, he said, since at the early stages they usually tap into fire-hydrant water, which is full of rust, minerals, sediment, and other potential contaminants.
With those adjustments made, the ColorHard went down fine, Bruce said.
Indoors, he said, away from the weather, everything went smoothly.
On another subject — Happy Veteran’s Day, everyone, and thank you to all who have served!
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