Comparative Comparison of Compressive Strength and Slump of Colored Concrete with Chemical, Mineral, and Composite Pigments to Improve Visual Quality in Urban Landscape Design

Document Type : Original Article

Authors

1 Department of Urban Planning and Design, Faculty of Art and Architecture, Shiraz University, P.O. Code: 7188637911, Shiraz, Iran

2 Department of Architecture and Urban Planning, Faculty of Civil Engineering and Architecture, Technical and Vocational University (TVU), P.O. Code: 1435761137, Tehran, Iran

3 Department of Civil Engineering, Faculty of Civil Engineering and Architecture, Technical and Vocational University (TVU), P.O. Code: 1435761137, Tehran, Iran

10.30509/jcst.2025.167588.1263

Abstract

Colored concrete can be an effective tool for improving visual readability in urban design projects. The present study aims to conduct a comparative study of the effect of chemical, mineral, and composite pigments on the mechanical properties of concrete, including compressive strength and slump, to utilize colored concrete in urban design and landscape. In this regard, experiments were conducted on concrete samples with chemical pigments (in red, yellow, green, and blue), composite pigments (turquoise), and mineral pigments (limonite). The results of the experiments show that adding pigments significantly affects the flowability (slump) and compressive strength of concrete. In particular, the use of chemical pigments reduces the flowability and compressive strength of concrete, with the reduction more evident at higher pigment percentages. The yellow pigment had the least negative effect on flowability and compressive strength among the colors. In contrast, limonite mineral pigment increased the compressive strength of concrete, especially at 5 and 10 % percentages.

Keywords

Main Subjects

References

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Journal of Color Science and Technology
Volume 19, Issue 3 - Serial Number 73
December 2025
Pages 249-270

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