Magnesium phosphate cement and preparation method thereof

A technology of magnesium phosphate cement and magnesium slag, which is applied in the field of building materials and can solve the problems of complex preparation and strength influence

Inactive Publication Date: 2015-07-08
苏州市德莱尔建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the solution is to coat MgO to control its solidification time. However, firstly, the preparation is more complicated, and secondly, the hydration mechanism of MgO will be affected after coating, and its strength will also be affected. Therefore, This plan is a plan that loses sight of the other, and it is not ideal

Method used

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  • Magnesium phosphate cement and preparation method thereof
  • Magnesium phosphate cement and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A kind of magnesium phosphate cement, comprises each component of following mass percentage:

[0028] (1) Magnesium phosphate cement clinker 65.0%;

[0029] (2) Magnesium slag 10.0%;

[0030] (3) Nano alumina 4.0%;

[0031] (4) Silicon nitride 5.0%;

[0032] (5) Fly ash 10.0%;

[0033] (6) Retarder borax 3.0%;

[0034] (7) Desulfurization gypsum 3.0%.

[0035] According to the preparation method provided by the invention, magnesium phosphate cement is prepared, and the preparation steps are as follows:

[0036] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0037] (2) Pulverization: The magnesium slag is pulverized until the average particle size of the powder is 120um;

[0038] (3) Premixing: Mix the components together and stir evenly;

[0039] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 50um, to obtain magnesium phosphate cement.

Embodiment 2

[0041] A kind of magnesium phosphate cement, comprises each component of following mass percentage:

[0042] (1) Magnesium phosphate cement clinker 80.0%;

[0043] (2) Magnesium slag 5.0%;

[0044] (3) Nano alumina 2.0%;

[0045] (4) Silicon nitride 2.0%;

[0046] (5) Fly ash 5.0%;

[0047] (6) Retarder borax 2.0%;

[0048] (7) Desulfurization gypsum 4%.

[0049] According to the preparation method provided by the invention, magnesium phosphate cement is prepared, and the preparation steps are as follows:

[0050] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0051] (2) Pulverization: The magnesium slag is pulverized until the average particle size of the powder is 120um;

[0052] (3) Premixing: Mix the components together and stir evenly;

[0053] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 50um, to obtain magnesium phosphate cement.

Embodiment 3

[0055] A kind of magnesium phosphate cement, comprises each component of following mass percentage:

[0056] (1) Magnesium phosphate cement clinker 75.0%;

[0057] (2) Magnesium slag 5.0%;

[0058] (3) Nano-alumina 5.0%;

[0059] (4) Silicon nitride 3.0%;

[0060] (5) Fly ash 6.0%;

[0061] (6) Retarder borax 3.0%;

[0062] (7) Desulfurization gypsum 3.0%.

[0063] According to the preparation method provided by the invention, magnesium phosphate cement is prepared, and the preparation steps are as follows:

[0064] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0065] (2) Pulverization: The magnesium slag is pulverized until the average particle size of the powder is 100um;

[0066] (3) Premixing: Mix the components together and stir evenly;

[0067] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 30um, that is, magnesium phosphate cement is obtained.

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Abstract

Disclosed are magnesium phosphate cement and a preparation method thereof, which relate to the field of a building material. The magnesium phosphate cement comprises the following components, by mass: (1) 65.0-80.0% of magnesium phosphate cement clinker, (2) 5.0-10.0% of magnesium slag, (3) 2.0-5.0% nano-alumina, (4) 2.0-5.0% of silicon nitride, (5) 5.0-10.0% of fly ash, (6) 2.0-5.0% of a delayed coagulant, and (7) 2.5-5.0% of gypsum. The preparation method of the magnesium phosphate cement comprises: (1) material preparation, (2) pulverizing, (3) pre-mixing, and (4) powder grinding. The magnesium phosphate cement provided in the invention has an adjustable coagulation speed and a characteristic of relatively high plasticity, and is high in early coagulation strength and long-term strength, so that the defect that the long-term strength of the magnesium phosphate cement is reduced is overcome, and the use prospect of the magnesium phosphate cement can be effectively improved.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a magnesium phosphate cement and a preparation method of the cement. Background technique [0002] Magnesium phosphate cement is a hydraulic cementitious material with rapid setting and rapid hardening, high early strength, and fast setting speed at low temperature. Well, this cement is mainly suitable for highways, airport runways, municipal arterial roads and other fields that need to be repaired quickly. [0003] Rapid hardening is the advantage of magnesium phosphate cement, especially suitable for emergency repair projects, but at the same time, it is precisely because the hydration rate is too fast that not only affects the molding of the material, but also affects the strength. Therefore, the hydration time and strength of magnesium phosphate cement A balance needs to be reached, not only to meet the needs of rapid construction, but also to make the material formable and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B12/02
Inventor 计慷
Owner 苏州市德莱尔建材科技有限公司
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