If the temperature of the water used to mix gypsum materials is raised up to body temperature (37.5° C),the setting time decreases.However,if water temperature is raised above 37.5° C,the setting time will increase.

Question

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The setting time of gypsum materials decreases as the temperature increases up to body temperature due to increased reaction rates. However, above 37.5°C, the setting time increases because the reaction can become too rapid, leading to premature setting or even inhibition of the setting process.

If the Temperature of the Water Used to Mix Gypsum