2022 Volume 60 Issue 10 Pages 894-901
The technology of colored concrete having been applied mainly to concrete of general strength thus far, studies on the application of this technology to high-strength concrete with low water-binder ratio are scant. Therefore, focusing on the mortar portion, which determines the surface color of colored concrete, we decided to study the effects of changes in the water-binder ratio of mortar on the compressive strength and color changes of mortar mixed with pigment for coloring. We found that it is possible to produce beautifully colored high-strength mortar with compressive strength of about 140/mm2, and that color fading over time can be suppressed by lowering the water-binder ratio.
