Novel rapid repair cement based on magnesium oxysulfate cementing material and preparation method thereof

A magnesium oxysulfide glue, fast technology, applied in cement mixing equipment, clay preparation equipment, chemical instruments and methods, etc., to achieve good fluidity, simple operation, and reduce the effect of sintering process

Inactive Publication Date: 2020-10-27
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Preparation of rapid repair cement with magnesium oxysulfate gelling material has not been reported yet

Method used

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  • Novel rapid repair cement based on magnesium oxysulfate cementing material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A kind of raw material ratio of the novel rapid repair cement based on magnesium oxysulfate cementitious material of the present invention is: light-burned magnesium oxide powder 150g, label is the aluminate cement clinker 15g of CA-50, magnesium sulfate heptahydrate 55g, water 65g, citric acid 0.8g.

[0028] The preparation method of the present invention specifically comprises the following steps:

[0029] (1) Put all the light-burned magnesia powder and the aluminate cement clinker labeled CA-50 in a mixer and stir for 2-3 minutes, stir and mix evenly to prepare a mixture;

[0030] (2) Put all the magnesium sulfate heptahydrate and water in a blender and stir for 3~4min, stir and mix evenly, so that the solute is fully dissolved to obtain a magnesium sulfate solution; put all the citric acid and magnesium sulfate solution in a blender and stir for 3~4min, After the citric acid is completely dissolved, set aside;

[0031] (3) Put the mixed material in step 1) and th...

Embodiment 2

[0035] A kind of raw material ratio of the novel rapid repair cement based on magnesium oxysulfide cementitious material of the present invention is: 150g of light-burned magnesia powder, 8g of aluminate cement clinker that label is CA-50, 55g of magnesium sulfate heptahydrate, water 65g, citric acid 0.8g.

[0036] The preparation method is the same as in Example 1.

Embodiment 3

[0038] A kind of raw material ratio of the novel rapid repair cement based on magnesium oxysulfide cementitious material of the present invention is: 150g of light-burned magnesia powder, 8g of aluminate cement clinker that label is CA-70, 55g of magnesium sulfate heptahydrate, water 65g, citric acid 0.8g.

[0039] The preparation method is the same as in Example 1.

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Abstract

The invention provides novel rapid repair cement based on a magnesium oxysulfate cementing material and a preparation method thereof. The material is characterized by being prepared from the followingraw materials in parts by weight: 45 to 55 parts of light calcined magnesia powder, 30 to 40 parts of magnesium sulfate solution, 2 to 7 parts of aluminate cement clinker with the mark number of CA-50 or CA-70, and 0.2 to 0.7 part of citric acid. According to the novel rapid repair cement based on the magnesium oxysulfate cementing material, the cement has the advantages of simple preparation process, short setting time, high early strength, good stability, cost reduction and environmental protection on the premise of ensuring the use strength, impermeability, stability and other properties of the cement so the early-strength quick-repair cement has positive meanings for the development of magnesian resources and the preparation of quick-repair cement in the future.

Description

technical field [0001] The invention belongs to the technical field of cement production, and in particular relates to a novel rapid repair cement based on magnesium oxysulfide cementitious material and a preparation method thereof. Background technique [0002] Cement quick repair materials are composed of hydraulic cementitious materials, mineral admixtures, fine aggregate additives, etc. When used, they need to be stirred evenly with a certain amount of water or other liquids, and there is no need for complicated construction machinery and technical requirements during construction. Closed traffic for a long time, suitable for highway engineering cement concrete repair materials that are open to traffic within 8 hours. Cement pavement repair materials are specially designed for timely repair of pitting, hollowing, peeling, sanding, shelling, cracks, exposed tendons, peeling, exposed stones and other diseases of cement concrete pavement. 24 hours after construction, the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30B28B1/08B28B11/24B28B13/06B28C5/00C04B111/27C04B111/72
CPCC04B28/30B28C5/00B28B1/08B28B11/24B28B13/06C04B2201/50C04B2111/27C04B2111/0075C04B2111/72C04B9/00C04B7/32C04B24/06
Inventor 毕万利房卉王梓涵常钧关岩孙美硕
Owner UNIV OF SCI & TECH LIAONING
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