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High-performance potassium magnesium phosphate cement mortar and preparation method thereof
The invention discloses a preparation method of high-performance potassium magnesium phosphate cement mortar. The preparation method comprises the following steps: 1, taking dead burned magnesium oxide powder as an alkaline component and potassium dihydrogen phosphate as an acidic component, and doping a compound retarder to prepare potassium magnesium phosphate cement; 2, preparing a gelling component of the potassium magnesium phosphate cement mortar from the potassium magnesium phosphate cement, silica fume and ferrous sulfate; 3, mixing common river sand with limestone sand to prepare a fine aggregate of the potassium magnesium phosphate cement mortar; and 4, mixing the gelling component prepared in the step 2 and the fine aggregate prepared in the step 3 with water to prepare the potassium magnesium phosphate cement mortar. For the potassium magnesium phosphate cement mortar prepared by the method disclosed by the invention, the coagulation time is controllable, the hydration heat is released stage by stage, the high early strength and later strength are increased continuously, the water stability is high, the volume shrinkage is small, the aggregate cement ratio is high, the aggregate resource is rich, the price is low, and the bonding strength with an ordinary silicate concrete component is high. The high-performance potassium magnesium phosphate cement mortar disclosed by the invention is simple in preparation process, convenient to use, energy-saving, environment-friendly and relatively low in cost.
High-performance potassium magnesium phosphate cement mortar and preparation method thereof
The invention discloses a preparation method of high-performance potassium magnesium phosphate cement mortar. The preparation method comprises the following steps: 1, taking dead burned magnesium oxide powder as an alkaline component and potassium dihydrogen phosphate as an acidic component, and doping a compound retarder to prepare potassium magnesium phosphate cement; 2, preparing a gelling component of the potassium magnesium phosphate cement mortar from the potassium magnesium phosphate cement, silica fume and ferrous sulfate; 3, mixing common river sand with limestone sand to prepare a fine aggregate of the potassium magnesium phosphate cement mortar; and 4, mixing the gelling component prepared in the step 2 and the fine aggregate prepared in the step 3 with water to prepare the potassium magnesium phosphate cement mortar. For the potassium magnesium phosphate cement mortar prepared by the method disclosed by the invention, the coagulation time is controllable, the hydration heat is released stage by stage, the high early strength and later strength are increased continuously, the water stability is high, the volume shrinkage is small, the aggregate cement ratio is high, the aggregate resource is rich, the price is low, and the bonding strength with an ordinary silicate concrete component is high. The high-performance potassium magnesium phosphate cement mortar disclosed by the invention is simple in preparation process, convenient to use, energy-saving, environment-friendly and relatively low in cost.
High-performance potassium magnesium phosphate cement mortar and preparation method thereof
YANG JIANMING (author) / XU XUANCHEN (author) / DU YUBING (author) / XU BING (author)
2015-12-23
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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