Dark Gray Iron Oxide - 3 inch x 3 inch sample tile colored with Davis Colors Dark Gray Iron Oxide concrete pigment

Dark Gray Iron Oxide sample tile with smooth finish on the front and broomed finish on the back

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Minwax Wood Finish Water-Based True Black Solid Interior Stain (1-Quart) in the Interior Stains department at

Gradient growth tubes. The black layer on the bottom is the FeS

Colored Mortar

MSI Canyon Creek Ledger Panel 6 in. x 24 in. Natural Quartzite Wall Tile (4 sq. ft. / Case) LPNLQCANCRE624C - The Home Depot

Non-destructive screening methodology based on handheld XRF for the classification of concrete: cement type-driven separation

Baja Red - 3 inch x 3 inch sample tile colored with Davis Colors Baja Red concrete pigment - Davis Colors

Petrographically quantifying the damage to field and lab-cast mortars subject to freeze-thaw cycles and deicer application, Journal of Infrastructure Preservation and Resilience

Colored Concrete Problems