Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for improving early strength of magnesium oxysulfate cement
The invention discloses a method for improving the early strength of magnesium oxysulfate cement, and belongs to the technical field of building materials. The components comprise, by mass, 100 parts of light calcined magnesia powder, 0-48 parts of magnesium sulfate heptahydrate, 1-2 parts of a citric acid additive, 0-48 parts of phosphogypsum, and 43-50 parts of water, the magnesium sulfate heptahydrate crystal is a colorless transparent crystal, the light calcined magnesia powder is a light yellow powder with an activity of 55-65 fired at 850 DEG C, and the phosphogypsum is an industrial by-product gypsum with a pH value maintained at about 7.4 after simple treatment. The magnesium oxysulfate cement with high early strength and excellent comprehensive performance can be obtained by regulating and controlling the mass part ratio of the magnesium sulfate heptahydrate to the phosphogypsum according to engineering requirements, mixing and stirring the materials for 4-6 minutes on the basis of ensuring that the sum of the mass parts of the magnesium sulfate heptahydrate and the phosphogypsum is 48, filling into a mold, maintaining for 24 hours, and demolding on the basis of ensuring that the sum of the mass parts of the magnesium sulfate heptahydrate and the phosphogypsum is 48. The method has the advantages of environmental protection, stable performance, cost reduction and the like, and can be used for industrial production.
本发明介绍了一种提高硫氧镁水泥早期强度的方法，属于建筑材料技术领域。按质量份数计算，其组分如下：轻烧氧化镁粉100份，七水硫酸镁0～48份，柠檬酸外加剂1～2份，磷石膏0～48份，水43～50份，其中七水硫酸镁晶体为无色透明晶体，轻烧氧化镁粉为850℃下烧制的活性为55～65的淡黄色粉末，磷石膏为经过简单处理pH值保持在7.4左右的工业副产石膏。本发明可以根据工程需求调控七水硫酸镁和磷石膏的质量份数比例，在保证七水硫酸镁和磷石膏质量份数之和为48份的基础上，将上述材料混合搅拌4～6分钟，装模养护24小时后脱模，即可得到早期强度高，综合性能佳的硫氧镁水泥。本发明具有绿色环保，性能稳定，降低成本等优点，可用于工业化生产。
Method for improving early strength of magnesium oxysulfate cement
The invention discloses a method for improving the early strength of magnesium oxysulfate cement, and belongs to the technical field of building materials. The components comprise, by mass, 100 parts of light calcined magnesia powder, 0-48 parts of magnesium sulfate heptahydrate, 1-2 parts of a citric acid additive, 0-48 parts of phosphogypsum, and 43-50 parts of water, the magnesium sulfate heptahydrate crystal is a colorless transparent crystal, the light calcined magnesia powder is a light yellow powder with an activity of 55-65 fired at 850 DEG C, and the phosphogypsum is an industrial by-product gypsum with a pH value maintained at about 7.4 after simple treatment. The magnesium oxysulfate cement with high early strength and excellent comprehensive performance can be obtained by regulating and controlling the mass part ratio of the magnesium sulfate heptahydrate to the phosphogypsum according to engineering requirements, mixing and stirring the materials for 4-6 minutes on the basis of ensuring that the sum of the mass parts of the magnesium sulfate heptahydrate and the phosphogypsum is 48, filling into a mold, maintaining for 24 hours, and demolding on the basis of ensuring that the sum of the mass parts of the magnesium sulfate heptahydrate and the phosphogypsum is 48. The method has the advantages of environmental protection, stable performance, cost reduction and the like, and can be used for industrial production.
本发明介绍了一种提高硫氧镁水泥早期强度的方法，属于建筑材料技术领域。按质量份数计算，其组分如下：轻烧氧化镁粉100份，七水硫酸镁0～48份，柠檬酸外加剂1～2份，磷石膏0～48份，水43～50份，其中七水硫酸镁晶体为无色透明晶体，轻烧氧化镁粉为850℃下烧制的活性为55～65的淡黄色粉末，磷石膏为经过简单处理pH值保持在7.4左右的工业副产石膏。本发明可以根据工程需求调控七水硫酸镁和磷石膏的质量份数比例，在保证七水硫酸镁和磷石膏质量份数之和为48份的基础上，将上述材料混合搅拌4～6分钟，装模养护24小时后脱模，即可得到早期强度高，综合性能佳的硫氧镁水泥。本发明具有绿色环保，性能稳定，降低成本等优点，可用于工业化生产。
Method for improving early strength of magnesium oxysulfate cement
一种提高硫氧镁水泥早期强度的方法
04.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Strength development in magnesium oxysulfate cement
| Elsevier | 1977
Preparation method of high-strength magnesium oxysulfate cement
| Europäisches Patentamt | 2023