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Light dolomite magnesium cement block, baking and steaming-free brick and manufacture method thereof

A manufacturing method and technology of dolomite, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of poor sound insulation, large capacity and high cost

Active Publication Date: 2011-05-18
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fly ash or slag blocks have low strength and poor water resistance; silicates have large capacity and poor sound insulation effect; clay blocks have great damage to the ecological environment and are prohibited from use
Magnesite blocks and unfired steamed bricks are widely used in the field of building materials due to their good properties such as fire prevention, light weight and high strength, heat preservation, sound insulation, and easy construction. At present, the main raw materials for the production of magnesite blocks and unfired steamed bricks are light The production areas of burning powder (magnesite) are mainly concentrated in Liaoning, my country. Due to the geographical constraints of resources, the cost of raw materials for producing magnesite blocks and non-burning steamed bricks is relatively high, and it is not easy to promote

Method used

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  • Light dolomite magnesium cement block, baking and steaming-free brick and manufacture method thereof
  • Light dolomite magnesium cement block, baking and steaming-free brick and manufacture method thereof

Examples

Experimental program
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Embodiment 1

[0005] Embodiment 1: A kind of lightweight dolomite magnesium cement block and its manufacture method, get caustic dolomite powder 5.0kg, sawdust 3.0kg, fly ash 0.5kg, expanded perlite 1kg, with 5.73kg water 1.77kg magnesium chloride is prepared To form a solution, the solution and the above materials are stirred evenly in the mixer, and after the slurry is made, pour it into the block machine and press it into a mold at ambient temperature. The block mold specification (light aggregate small hollow block mold) is 390× 190×190mm, after demoulding, it will be a finished product after curing for 28 days under the condition of ambient temperature and air relative humidity less than 80%.

[0006] The main technical indicators of the finished product are as follows:

[0007] Density grade: 576kg / m 3

[0008] Compressive strength (MU2.5) average: 2.8MPa minimum single block: 2.6MPa

[0009] Drying shrinkage: 0.028% Water absorption: 16% Carbonization coefficient: 0.90 Softening c...

Embodiment 2

[0011] Embodiment 2: A kind of manufacturing method of light-weight dolomite magnesium cement burn-free steaming brick, take caustic dolomite powder 5.0kg, straw powder 1.5kg, slag 1.5kg, expanded vermiculite 2kg and blowing agent 0.1kg, use 5.35kg water Prepare 1.65kg of magnesium chloride into a solution. The foaming agent is made into foam by a foaming machine and added. The solution and the above-mentioned materials are stirred evenly in the mixer, and after the slurry is made, it is injected into the brick-making machine at ambient temperature, pressed and formed, and bricks are made. The specification (solid brick) is 240×115×53mm. After demoulding, put it in a steam pressurized cabinet at 105°C for 0.5h. After coming out of the cabinet, it will be cured at ambient temperature and the relative air humidity is less than 80%. After 28 days, it will be a finished product.

[0012] The main technical indicators of the finished product are as follows:

[0013] Density level: ...

Embodiment 3

[0017] Embodiment 3: a kind of lightweight dolomite magnesium cement block and its manufacture method, get caustic dolomite powder 10kg, sawdust 5kg, fly ash 3kg, polystyrene 5kg, with 6kg water 2.5kg magnesium chloride is mixed with solution, solution Stir evenly with the above materials in the mixer, inject the slurry into the block machine and press it into a mold at ambient temperature. The block mold specification (light aggregate small hollow block mold) is 390×190×190mm. After the mold is cured at ambient temperature and air relative humidity less than 80%, it will be a finished product after 28 days.

[0018] The main technical indicators of the finished product are as follows:

[0019] Density grade: 525kg / m 3

[0020] Compressive strength (MU2.5) average: 2.7MPa minimum single block: 2.6MPa

[0021] Drying shrinkage: 0.021% Water absorption: 15% Carbonization coefficient: 0.89 Softening coefficient: 0.85

[0022] Freeze resistance (after 25 freeze-thaw cycles) Ma...

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Abstract

The invention discloses a light dolomite magnesium cement block, a baking and steaming-free brick and a manufacture method thereof, belonging to the field of chemical engineering buildings. The light dolomite magnesium cement block and the baking and the steaming-free brick are composed of the following components of caustic dolomite powder, magnesium chloride, a light filler, an inert filler, water and a heat insulating material with the mass ratio of 1.00: (0.25-0.40): (0.50-1.0): (0.05-0.30): (0.60-1.20): (0.10-0.50). The manufacture method comprises the following steps of stirring slurry, shaping and curing. The caustic dolomite powder with good activity is adopted to manufacture the block and the baking and steaming-free brick, which can expand the application range of the magnesium cement materials and has an important meaning for developing economy for each region and saving a great quantity of woods for our country. The light block and the baking and steaming-free brick produced with the manufacture method of the invention have the characteristics of fire prevention, heat insulation, high strength, sound insulation, corrosion prevention, shock prevention, environmental protection, energy conservation and the like, are easy for construction, are the new products for replacing the blocks and the bricks made of various traditional materials, belong to environment-friendly building materials and can be widely applied in the construction industry.

Description

1. Technical field [0001] The invention relates to a lightweight dolomite magnesium cement block, an unfired steamed brick and a manufacturing method thereof, belonging to the field of chemical construction 2. Background technology [0002] Blocks or bricks currently used in China are made of fly ash, slag, clay, silicate and other materials. Fly ash or slag blocks have low strength and poor water resistance; silicates have large capacity and poor sound insulation effect; clay blocks have great damage to the ecological environment and are prohibited from use. Magnesite blocks and unfired steamed bricks are widely used in the field of building materials due to their good properties such as fire prevention, light weight and high strength, heat preservation, sound insulation, and easy construction. At present, the main raw materials for the production of magnesite blocks and unfired steamed bricks are light The production areas of burning powder (magnesite) are mainly concentra...

Claims

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Application Information

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IPC IPC(8): C04B28/32
CPCC04B28/32Y02W30/91C04B14/042C04B14/185C04B14/204C04B18/08C04B18/141C04B18/24C04B18/26C04B24/24C04B40/024
Inventor 肖学英常成功张全有王永晏王继东孙庆国韩继龙王明英
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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