Nizevičienė, D.; Kybartienė, N.; Jusas, V. Analysis of Compressive Strength of Anhydrite Binder Using Full Factorial Design. Materials2023, 16, 6265.
Nizevičienė, D.; Kybartienė, N.; Jusas, V. Analysis of Compressive Strength of Anhydrite Binder Using Full Factorial Design. Materials 2023, 16, 6265.
Nizevičienė, D.; Kybartienė, N.; Jusas, V. Analysis of Compressive Strength of Anhydrite Binder Using Full Factorial Design. Materials2023, 16, 6265.
Nizevičienė, D.; Kybartienė, N.; Jusas, V. Analysis of Compressive Strength of Anhydrite Binder Using Full Factorial Design. Materials 2023, 16, 6265.
Abstract
Flue gas desulfurization gypsum (FGD gypsum) is obtained from the desulphurization of combustion gases in fossil fuel power plants. FGD gypsum can be used to produce anhydrite binder. The effect of three independent variables such as the calcination temperature of FGD gypsum (500-800 oC), the hydration time (3-28 days) and the amount of activator (0-2 %) on the compressive strength of anhydrite binder were studied. K2SO4 and Na2SO4 were used as activators. The compressive strength of anhydrite binder was evaluated using a full factorial design. The multiple linear regression models were developed to correlate the significant variables to the compressive strength of anhydrite binder. The experimental results and statistical analysis showed that the hydration time had the biggest impact on the compressive strength of anhydrite binder using K2SO4 and Na2SO4. K2SO4 made a greater influence on the compressive strength than Na2SO4. The results of modeling indicated that the individual variables had a larger effect on the compressive strength of anhydrite binder than their interaction. The mean absolute percentage error between experimental and calculated values of compressive strength was less than 10 %.
Chemistry and Materials Science, Materials Science and Technology
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