A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modified magnesium phosphate cement mortar and preparation method thereof
The invention discloses a modified magnesium phosphate cement mortar, which is composed of the following components: magnesium oxide, potassium dihydrogen phosphate, a composite retarder, sand, silica fume and water, wherein the molar ratio of magnesium oxide to potassium dihydrogen phosphate in the modified magnesium phosphate cement mortar is 4: 1-6: 1, and the addition amount of the composite retarder is 3-10% of the total mass of magnesium oxide and potassium dihydrogen phosphate; the mass ratio of the silica fume to the total mass of the magnesium oxide, the potassium dihydrogen phosphate and the silica fume is 5%-20%, the mass ratio of the sand to the total mass of the magnesium oxide, the phosphate and the silica fume is 1: 1, the magnesium oxide, the potassium dihydrogen phosphate, the composite retarder and the silica fume jointly form a gelling component, and the mass ratio of the water to the gelling component is 0.2-0.25. The modified magnesium phosphate cement mortar disclosed by the invention is relatively good in flowability, has the effect of delaying the setting time of the magnesium phosphate cement mortar, and solves the problems of low long-term strength growth rate and poor water resistance of the magnesium phosphate cement mortar. The invention also discloses a preparation method of the modified magnesium phosphate cement mortar.
本发明公开了一种改性磷酸镁水泥砂浆，由以下成分组成：氧化镁、磷酸二氢钾、复合缓凝剂、砂子、硅灰以及水，改性磷酸镁水泥砂浆中氧化镁与磷酸二氢钾的摩尔比值为4:1‑6:1，复合缓凝剂的加入量为氧化镁和磷酸二氢钾总共质量的3％‑10％，硅灰与氧化镁、磷酸二氢钾和硅灰总质量的质量比值为5％‑20％，砂子与氧化镁、磷酸盐和硅灰总共质量的质量比值为1:1，氧化镁、磷酸二氢钾、复合缓凝剂、硅灰共同组成胶凝组分，水和胶凝组分的质量比为0.2‑0.25。本发明的一种改性磷酸镁水泥砂浆，其流动性较好，具有延缓磷酸镁水泥砂浆凝结时间的效果和改善其后期强度增长率低以及耐水性差的问题。本发明还公开了一种改性磷酸镁水泥砂浆的制备方法。
Modified magnesium phosphate cement mortar and preparation method thereof
The invention discloses a modified magnesium phosphate cement mortar, which is composed of the following components: magnesium oxide, potassium dihydrogen phosphate, a composite retarder, sand, silica fume and water, wherein the molar ratio of magnesium oxide to potassium dihydrogen phosphate in the modified magnesium phosphate cement mortar is 4: 1-6: 1, and the addition amount of the composite retarder is 3-10% of the total mass of magnesium oxide and potassium dihydrogen phosphate; the mass ratio of the silica fume to the total mass of the magnesium oxide, the potassium dihydrogen phosphate and the silica fume is 5%-20%, the mass ratio of the sand to the total mass of the magnesium oxide, the phosphate and the silica fume is 1: 1, the magnesium oxide, the potassium dihydrogen phosphate, the composite retarder and the silica fume jointly form a gelling component, and the mass ratio of the water to the gelling component is 0.2-0.25. The modified magnesium phosphate cement mortar disclosed by the invention is relatively good in flowability, has the effect of delaying the setting time of the magnesium phosphate cement mortar, and solves the problems of low long-term strength growth rate and poor water resistance of the magnesium phosphate cement mortar. The invention also discloses a preparation method of the modified magnesium phosphate cement mortar.
本发明公开了一种改性磷酸镁水泥砂浆，由以下成分组成：氧化镁、磷酸二氢钾、复合缓凝剂、砂子、硅灰以及水，改性磷酸镁水泥砂浆中氧化镁与磷酸二氢钾的摩尔比值为4:1‑6:1，复合缓凝剂的加入量为氧化镁和磷酸二氢钾总共质量的3％‑10％，硅灰与氧化镁、磷酸二氢钾和硅灰总质量的质量比值为5％‑20％，砂子与氧化镁、磷酸盐和硅灰总共质量的质量比值为1:1，氧化镁、磷酸二氢钾、复合缓凝剂、硅灰共同组成胶凝组分，水和胶凝组分的质量比为0.2‑0.25。本发明的一种改性磷酸镁水泥砂浆，其流动性较好，具有延缓磷酸镁水泥砂浆凝结时间的效果和改善其后期强度增长率低以及耐水性差的问题。本发明还公开了一种改性磷酸镁水泥砂浆的制备方法。
Modified magnesium phosphate cement mortar and preparation method thereof
一种改性磷酸镁水泥砂浆及其制备方法
YE YANXIA (author) / XIE FULIN (author) / FU CUIHONG (author) / MA SIMIN (author) / JING CONG (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
High-performance potassium magnesium phosphate cement mortar and preparation method thereof
| European Patent Office | 2015
Magnesium phosphate cement based rapid repair mortar and preparation method thereof
| European Patent Office | 2016
Preparation method of modified magnesium phosphate cement
| European Patent Office | 2023
Hydroxyl carboxylate modified magnesium phosphate cement and preparation method thereof
| European Patent Office | 2023