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Results of the rheology tests performed on geopolymer pastes. (a) Flow curves of samples containing different amounts of Spirulina platensis; (b) flow curves of samples containing different amounts of Tetraselmis suecica; (c) comparison between flow curves of samples with different biomasses (Spirulina, Tetraselmis and lignin) at 5 php addition; (d) values of yield stress obtained by fitting the flow curves with Hershel–Bulkley’s model.
