Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate
Elfwal, M., El-Ashkar, N., Nagy, N., Shalan, A. (2024). Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate. EKB Journal Management System, 15(15), 1-1. doi: 10.1088/1755-1315/1396/1/012002
Mostafa S Elfwal; Nabil H El-Ashkar; Nabil M Nagy; Ali H Shalan. "Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate". EKB Journal Management System, 15, 15, 2024, 1-1. doi: 10.1088/1755-1315/1396/1/012002
Elfwal, M., El-Ashkar, N., Nagy, N., Shalan, A. (2024). 'Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate', EKB Journal Management System, 15(15), pp. 1-1. doi: 10.1088/1755-1315/1396/1/012002
Elfwal, M., El-Ashkar, N., Nagy, N., Shalan, A. Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate. EKB Journal Management System, 2024; 15(15): 1-1. doi: 10.1088/1755-1315/1396/1/012002

Microstructural and mechanical characteristics of alkaliactivated green concrete using slag from electric arc furnaces as precursor and aggregate

The International Conference on Civil and Architecture Engineering
Volume 15, Issue 15, May 2024, Page 1-1  XML PDF (416.87 K)
Document Type: Original Article
DOI: 10.1088/1755-1315/1396/1/012002
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Authors
Mostafa S Elfwal1; Nabil H El-Ashkar1; Nabil M Nagy2; Ali H Shalan3
1Construction and Building Engineering Department, Arab Academy for Science, Technology & Maritime Transport, Egypt.
2Civil Engineering Department, Military Technical College, Egypt.
3Construction and Building Engineering Department, Higher Institute of Engineering and Technology, Egypt.
Abstract
Alkali-activated materials (AAM) have gained popularity in research because of their lower carbon dioxide emissions than Portland cement. Electric arc furnace slag (EAFS) exceeds landfills. Moreover, electric arc furnaces emit less CO2 than oxygen-blast furnaces.This research is the first to suggest that mixing EAFS and metakaolin (MK) as AAM precursors could compensate for the deficiency of SiO2 and Al2O3 in the EAFS and CaO in the MK, which would produce better AAM properties than using either of them singularly. Furthermore, the utilization of EAFS aggregate instead of natural aggregate in alkali-activated concrete (AAC) reduces waste materials, consumes fewer natural resources, and solves the
problem of natural aggregate scarcity. This study's main objectives were to evaluate the effects of varying ratios of EAFS and MK as precursors and EAFS aggregate to natural aggregate ratios on the AAC's fresh and hardened properties. The properties under consideration are workability and cube compressive strength. The outcomes showed that increasing EAFS with decreasing MK content increased AAC workability and cube compressive strength while increasing EAFS aggregate over natural aggregate improved AAC workability and decreased cube compressive strength.
Keywords
Alkali-activated material (AAM); Workability; Compressive strength; Microstructure; Alkali-activated electric arc furnace slag
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