Fundamental Study on Color Tone Control of Mortar Using Coloring Pigments
By H. Jinnai and Y. Koyama
Concrete Journal, Vol.60, No.10, Oct. 2022
- Synopsis
- 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.
- Keywords:
- Colored concrete, Color, Mortar, Pigment, Water-binder ratio, Change over time, L*a*b* color space
