Effect of D-Sodium Erythorbate on Properties of Magnesium Oxysulfate Cement
The effect of D-sodium erythorbate on the setting time,conductivity,compressive strength,and water resistance of magnesium oxysulfate cement was investigated.The phase composition and microstructure of hydration products of magnesium oxysulfate cement were analyzed using X-ray diffraction,synchronous thermal analysis,and scanning electron microscopy.The results show that the addition of chemical additive D-sodium erythorbate significantly prolongs the setting time of magnesium oxy sulfate cement.Additionally,the formation of a substantial amount of 5Mg(OH)2·MgSO4·7H2O(5·1·7)crystalline phase greatly improves the compressive strength and water resistance of magnesium oxysulfate cement.
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