Effect of Limestone Powder and Fly Ash on Magnesium Sulfate Resistance of Mortar
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2010年第4期
论文作者：刘数华
文章页码：700 - 703
摘 要：The effect of limestone powder and fly ash on magnesium sulfate resistance of mortar was studied by testing on the strength, expansion and hydration products of the specimens stored in MgSO4 solution at certain periods. The experimental results show that the strength of mortar stored in MgSO4 solution increases a little before 28 d, but decreases fast subsequently. The more the contents of limestone powder and fly ash, the less the strength losses. Mortar swells in the MgSO4 solution with the soaking time. And the more the contents of limestone powder and fly ash, the less the expansion rate is. The expansion or strength loss of mortars results from the expansion of gypsum, as well as the loss of Ca(OH)2 and other hydration products of cement. The magnesium sulfate resistance of the mortars containing limestone powder and fly ash is high.
刘数华
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University
摘 要：The effect of limestone powder and fly ash on magnesium sulfate resistance of mortar was studied by testing on the strength, expansion and hydration products of the specimens stored in MgSO4 solution at certain periods. The experimental results show that the strength of mortar stored in MgSO4 solution increases a little before 28 d, but decreases fast subsequently. The more the contents of limestone powder and fly ash, the less the strength losses. Mortar swells in the MgSO4 solution with the soaking time. And the more the contents of limestone powder and fly ash, the less the expansion rate is. The expansion or strength loss of mortars results from the expansion of gypsum, as well as the loss of Ca(OH)2 and other hydration products of cement. The magnesium sulfate resistance of the mortars containing limestone powder and fly ash is high.
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