EFFECT OF ADDING RED AND YELLOW PIGMENTS TO GEOPOLYMER CONCRETE

Authors

  • Rusul Abdul Rahim Ghadban Material Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Author https://orcid.org/0009-0003-9867-6913
  • Mohammed Ali Abdulrehman 2Materials Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq Author https://orcid.org/0000-0001-8567-5880

DOI:

https://doi.org/10.31272/jeasd.28.2.6

Keywords:

Alkaline, colored concrete, compressive strength, slag

Abstract

This study examined the feasibility of producing colored geopolymer concrete using slag as the binder and investigated the effects of pigment on various properties of geopolymer concrete. The geopolymer concrete was supplemented with two varieties of pigment, namely iron oxide hydroxide in the shades of "red" and "yellow", then the following tests of compressive strength, rebound number, density, and ultrasonic pulse velocity were carried out on it. The highest compressive strength value was achieved when adding 1% of pigments, which increased the red and yellow values from the reference value by 2.7 percent and 1.8 percent, respectively. The best rebound number values can be obtained by adding 1% yellow and 3% red, which increased the red and yellow values from the reference value by 8% and 15%, respectively. The density increases as the proportion of the additional pigment rises. The maximum density values were achieved by incorporating 1% of red and yellow pigment, with a respective increase of 1% and 3% for red and yellow. The highest values of ultrasonic pulse velocity when adding 1% of yellow and red color pigments increased by 1.7% for yellow and 2% for red. The optimal addition is 1.2% as it enhances properties and reduces expenses when utilizing smaller pigments.

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Published

2024-03-01

How to Cite

EFFECT OF ADDING RED AND YELLOW PIGMENTS TO GEOPOLYMER CONCRETE. (2024). Journal of Engineering and Sustainable Development, 28(02), 222-232. https://doi.org/10.31272/jeasd.28.2.6