Method of fast and equably mixing concrete with added magnesium oxide

A magnesium oxide and concrete technology, applied in chemical instruments and methods, clay preparation devices, cement mixing devices, etc., can solve the problems of reduced production efficiency of mixers, increased construction costs, and difficulty in uniform distribution, so as to shorten construction time and improve production Efficiency and the effect of reducing construction costs

Inactive Publication Date: 2007-02-28
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since the amount of magnesia mixed in each concrete mix is ​​very small and difficult to distribute evenly, it is necessary to prolong the mixing time to achieve the

Method used

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  • Method of fast and equably mixing concrete with added magnesium oxide
  • Method of fast and equably mixing concrete with added magnesium oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 1. Quickly and evenly mix the external magnesium oxide concrete process (refer to Figure 2).

[0014] 2. Add the magnesium oxide that needs to be added to each concrete mix into the water and admixture required for each concrete mix and stir quickly and evenly to make a mixed solution of magnesia, water and admixture.

[0015] 3. Add the evenly stirred mixture of magnesia, water and admixture to the concrete mixture in the mixer, and mix it evenly to produce concrete mixed with magnesia within the conventional concrete mixing time.

[0016] 4. Magnesium oxide powder is easy to be stirred evenly in water, but the stability time is short after the stirring is stopped, and precipitation is easy to occur. The stirring method adopts mechanical stirring or pneumatic stirring, and keeps the normal open state.

[0017] Implementation Notes

[0018] Weighing water, admixture, and magnesium oxide are completed by the electronic scale of the mixing material system, and the weigh...

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PUM

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Abstract

The invention discloses a rapid-even stirring magnesium oxide concrete external doping method, which comprises the following steps: putting water, dried material of magnesium oxide and additive in the water-weighing hopper, stirring mechanically or pneumatically to prepare composite liquid of magnesium oxide, adding in the stirrer to mix with concrete and sand, stone and cement, stirring to obtain the external doped magnesium oxide concrete.

Description

Technical field [0001] The invention relates to concrete construction of hydraulic dams, in particular to a method for rapidly and uniformly mixing externally mixed magnesium oxide concrete. Background technique [0002] The dam-building technology of externally-mixed magnesium oxide concrete has begun to be popularized and applied, and the key to the quality of its dam construction lies in the uniformity of externally-mixed magnesium oxide in the concrete. At present, in the construction process of mixing concrete with external magnesia, most of the external magnesia is directly put into the mixer as dry magnesia. Since the amount of magnesia added to each concrete mix is ​​very small and difficult to distribute evenly, it is necessary to prolong the mixing time to achieve the uniformity of the magnesia concrete mixed with it, resulting in a significant reduction in the production efficiency of the mixer and an increase in construction costs. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B28C5/38C04B28/30
Inventor 胡朝新王志刚丁仕辉裴泽华
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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