Abed, Z., Ahmed, H., Khalil, W. (2023). Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method. Alustath, 41(5), 724-733. doi: 10.30684/etj.2023.138600.1411
Ziyad M. Abed; Hisham K. Ahmed; Wasan I. Khalil. "Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method". Alustath, 41, 5, 2023, 724-733. doi: 10.30684/etj.2023.138600.1411
Abed, Z., Ahmed, H., Khalil, W. (2023). 'Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method', Alustath, 41(5), pp. 724-733. doi: 10.30684/etj.2023.138600.1411
Abed, Z., Ahmed, H., Khalil, W. Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method. Alustath, 2023; 41(5): 724-733. doi: 10.30684/etj.2023.138600.1411

Optimization of Silica Fume and Slag in Roller Compacted Concrete by Taguchi Method

Engineering and Technology Journal
Article 11, Volume 41, Issue 5, May 2023, Pages 724-733    PDF (716.05 K)
Document Type: Research Paper
DOI: 10.30684/etj.2023.138600.1411
Authors
Ziyad M. Abed* 1; Hisham K. Ahmed2; Wasan I. Khalil1
1Civil Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
2Building and construction Department, Al-Esraa University college, Baghdad, Iraq
Abstract
Roller Compacted Concrete Pavement (RCCP) is one type of concrete poured and compacted with the same machines utilized to construct heavy-duty pavements, log sorting, and parking. In this work, a combination of three factors was optimized to produce a sustainable RCCP. These factors were densified silica fume, ground granulated blast-furnace Slag, and mixing water contents. By weight, sulfate-resistant Portland cement was substituted with cementitious materials  such as silica fume and slag in the amounts of (5, 7.5, and 10%) and (25, 27.5, and 30%), respectively. In addition, various percentages (5, 6, and 7%) of water content were utilized. Using the Taguchi approach, the impact of these factors was investigated based on the results of compressive strength and bulk density. The cubic specimens of compressive strength and bulk density, with 100 mm length, were tested at 7, 14, and 28 days. According to the results, the optimum percentages of silica fume, slag, and water contents were (5, 27.5, and 6%), respectively. Comparing the optimal mixture to the reference, the compressive strength enhancement was about 13.9%. According to Taguchi's study, water content has a most significant influence on the characteristics of RCCP than silica fume content. The slag content has the least impact on RCCP.

Highlights
  • Utilizing mineral admixtures wastes (silica fume and slag) improves the functionality of RCC.
  • Water content is the most influencing factor on the properties of RCCP compared with silica fume content.
  • the compressive strength enhancement was about 13.9%.
Keywords
Silica Fume; Slag; Cementitious material; Taguchi approach; compressive strength; Bulk density; Roller compacted concrete
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