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Concrete expansion agent prepared from magnesium slag and preparation method of concrete expansion agent

A technology of concrete and expansion agent, which is applied in the field of building materials, can solve the problems of occupying land resources, endangering human health and crop growth, and achieve the effects of reducing pollution, saving land, and reducing production costs

Inactive Publication Date: 2016-11-23
天津市金亿日盛建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

With the large amount of discharge and accumulation of magnesium slag, it not only takes up a lot of land resources, but also the magnesium slag flows into rivers and lakes with the rainwater, which has a great impact on crops and the surrounding environment, seriously endangering human health and well-being. crop growth

Method used

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Embodiment Construction

[0009] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the protection scope of the present invention.

[0010] The invention provides a concrete expansion agent prepared by using magnesium slag, which comprises magnesium slag with a component content of 70-95% by weight, and the magnesium slag includes: 40-50% of calcium oxide, 20-30% of silicon dioxide, Aluminum oxide 2-5%, magnesium oxide 6-10%, ferric oxide 9%.

[0011] In a preferred embodiment, it also includes: 5-15% of gypsum, 0-20% of fly ash, and 0-5% of additives.

[0012] In a preferred embodiment, the gypsum is selected from anhydrite, dihydrate gypsum or industrial gypsum.

[0013] The invention also provides a...

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PUM

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Abstract

The invention discloses a concrete expansion agent prepared from magnesium slag. The concrete expansion agent contains, by weight, 70-95% of magnesium slag. The magnesium slag contains 40-50% of calcium oxide, 20-30% of silicon dioxide, 2-5% of aluminum oxide, 6-10% of magnesium oxide and 9% of ferric oxide. Correspondingly, the invention further provides a preparation method for preparing the concrete expansion agent from magnesium slag. The preparation method includes the steps that magnesium slag is ground, and then the ground magnesium slag and other mixtures are stirred evenly. The concrete expansion agent and the preparation method have the advantages that waste slag generated in industrial magnesium making serves as the main raw material of the concrete expansion agent, so that energy is saved, production cost is lowered, industrial waste slag is utilized and turned into wealth, a lot of land occupied by magnesium slag stacking is saved, and pollution caused by magnesium slag to the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete expansion agent prepared from magnesium slag and a preparation method thereof. Background technique [0002] With the sharp increase in the consumption of metal materials, the resources of the earth's surface shell are becoming increasingly depleted, and many traditional metal minerals are tending to be exhausted. Accelerating the development of magnesium metal materials is one of the important measures for the sustainable development of society. Due to the low density of metal magnesium, it can form high-strength alloys with metals such as aluminum, copper, and zinc; magnesium alloys have light density, good thermal conductivity, good damping and shock absorption, and electromagnetic shielding functions, and are easy to process and shape and waste recycling. Magnesium and magnesium alloys are becoming the preferred materials for modern automobil...

Claims

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Application Information

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IPC IPC(8): C04B22/06
Inventor 丁波
Owner 天津市金亿日盛建筑材料有限公司
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