Experimental investigation on the durability of metakaolin-based geopolymer concrete in aggressive environments

نویسندگان

چکیده

The properties and performance of geopolymer concrete have been evaluated in numerous studies recent decades. One the fields study is evaluation durability aggressive environments. In this study, influence four experimental factors, including curing temperature (T), weight ratio sand to metakaolin (S/M), environment type (AE), exposure time (Et) were investigated on mechanical metakaolin-based (MGPC). Moreover, 5% sulfuric acid solution, sodium chloride Persian Gulf seawater used as Response surface methodology (RSM) was implemented statistically design analyze experiments. Mathematical models derived for prediction residual compressive strength (RFc), changes (∆W), (∆Fc) MGPC. analysis variance showed that all factors had a significant effect responses, while only AE-S/M AE-ET an interaction. Design-Expert software (DX7) employed optimization factors. Results revealed use optimum ratios S/M (2.52, 2.07, 1.29) at 46 °C 56 days led RFc values 34.12, 43.60, 44.15 acid, chloride, environments, respectively. These results, which are higher than minimum required concrete, along with ∆Fc ∆W values, confirm acceptable

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ژورنال

عنوان ژورنال: Asian Journal of Civil Engineering

سال: 2023

ISSN: ['2522-011X', '1563-0854']

DOI: https://doi.org/10.1007/s42107-023-00589-2