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Dyeing concrete as black as possible - EightFingers - 11-27-2016

I want to dye some concrete black to match the lava as close as possible. I prefer a dye you mix in the concrete as it is being mixed. I looked into the Behr surface products, but I'm going to have to buy three different products. This will be for a pretty small batch of less than 300 pounds.



RE: Dyeing concrete as black as possible - blackhat - 11-27-2016

Stucco or grout dye.


RE: Dyeing concrete as black as possible - EightFingers - 11-28-2016

Hmmmm, hadn't thought about stucco...


RE: Dyeing concrete as black as possible - crokett™ - 11-28-2016

There are powdered colorants that you mix into wet concrete. I know I've seen black. Haven't used it but I've seen it.


RE: Dyeing concrete as black as possible - Stwood_ - 12-02-2016

Block and brick suppliers usually sell the concrete powdered colorant.
Basic colors of black, red, orange, gray, etc.


RE: Dyeing concrete as black as possible - chips ahoy - 12-03-2016

2beast would probably know.

Mel


RE: Dyeing concrete as black as possible - daddo - 12-05-2016

Buy an old clunker truck- in a few years, it will leak enough oil to coat it black.


I would think a thin stain/dye that would soak in well would work. I'd surely do a sacrificial spot or piece of concrete first.


RE: Dyeing concrete as black as possible - Mr_Mike - 12-05-2016

I have used the black concrete dye (I think it was quikrete bracnd) with good success on a concrete countter top. It only colors the cement, not the aggregate. So, if you grind it, the aggregate pops out visually. In your case, you might blend your own concrete using portland cement and lava rock as the aggregate.