High-Temperature, Bond, and Environmental Impact Assessment of Alkali-Activated Concrete (AAC)
نویسندگان
چکیده
Alkali-activated binders (AABs) offer the opportunity to upcycle a variety of residues into products that can have added value. Although AABs are reported superior high-temperature performance, their thermal behavior is heavily governed by microstructure. The present study, therefore, evaluates effect varying fly ash:slag ratios, activator modulus (Ms), and high temperatures on microstructure AAB using X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy coupled with energy-dispersive spectroscopy. Furthermore, mechanical properties alkali-activated concrete (AAC) investigated through compressive, bond, flexural, split tensile strengths. A life cycle assessment AAC performed ReCiPe 2016 methodology. results from microstructural experiments show formation new crystalline phases decomposition reaction temperature exposure, they correlate well observed performance. 28-days compressive strength slag content enhanced 151.8–339.7%. ratio 70:30 Ms 1.4 proposed as optimal obtained results. reveal biggest impact climate change comes transport (45.5–48.2%) sodium silicate (26.7–35.6%).
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ژورنال
عنوان ژورنال: Infrastructures
سال: 2022
ISSN: ['2412-3811']
DOI: https://doi.org/10.3390/infrastructures7090119