Effect of Colour Pigment on Selected Properties of Fly Ash Concrete. Part 1: Compressive Strength and Water Absorption

Abstract

Concrete has not only fulfilled the load-bearing function, but also its aesthetic function comes to the fore. It is precisely coloured concrete that performs this function best. The second phenomenon of today is "green concrete". In the paper, the properties of coloured concrete are compared with its "greener" alternative - coloured concrete with fly ash as a binder substitution. Experimental samples were measured for compressive strength and water absorption over a period of 7 days to 2 years. The results showed that the combination of coloured pigment and fly ash has an interesting synergistic effect, as evidenced by a 45MPa compressive strength and a 15% decrease of water absorption.

Evaluating Sustainable Colored Mortars Reinforced with Fly Ash: A Comprehensive Study on Physical and Mechanical Properties under High-Temperature Exposure

“…Recent studies in the literature spotlighting conventional and CC behavior under diverse conditions and with various additives have emerged [25][26][27][28]. These researchers obtained different results under different load effects on samples with other components.…”

“…Similarly, Junak et al [27] explored water absorption and compressive strength changes in CCs incorporating yellow, red, and brown pigments with fly ash, observing altered properties compared to control concrete. This study aims to obtain information about the effects of pigment color on selected properties (total water absorption and compressive strength) of concrete samples.…”