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Recycled concrete mine filling material prepared from corncobs and preparation method of recycled concrete mine filling material

A technology for recycled concrete and mine filling, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as shrinkage and shrinkage of filling materials, achieve high moisture content, reduce land occupation, and good water absorption sexual effect

Pending Publication Date: 2022-05-27
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of high cost, easy shrinkage of filling material and shrinkage of filling body when using cement for mine filling, the present invention provides a corncob-made recycled concrete mine filling material and its preparation method, which can reduce the cost of mine filling , while solving the problem of retraction and shrinkage of filling materials

Method used

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  • Recycled concrete mine filling material prepared from corncobs and preparation method of recycled concrete mine filling material
  • Recycled concrete mine filling material prepared from corncobs and preparation method of recycled concrete mine filling material
  • Recycled concrete mine filling material prepared from corncobs and preparation method of recycled concrete mine filling material

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preparation example Construction

[0046] A preparation method of corncob-made recycled concrete mine filling material, characterized in that, comprising:

[0047] (1) Mix the cement and the reclaimed sand evenly;

[0048] (2) adding water again and stirring to form mortar;

[0049] (3) Finally, pour in the corncob particles while compacting and stirring. After the corncob is completely wrapped by the mortar, the mixture that is segregated and precipitated at the bottom is turned over with the corncob particles, and stirred again for 1-2 minutes to obtain a recycled concrete mine. Filling material; wherein, the recycled concrete mine filling material is composed of the following raw materials by weight: 25 parts of cement, 30-50 parts of water, 55-85 parts of recycled sand, and 5.5-8 parts of corncob particles; The volume ratio of concrete mine filling materials is 44.4%-54.6%.

[0050] In some embodiments, the stirring in step (1)-step (3) is to use a horizontal mixer to stir, and when a horizontal mixer is ...

Embodiment 1

[0059] The recycled concrete mine filling material of the present embodiment is composed of the following raw materials by weight: 25 parts of cement, 30 parts of water, 55 parts of recycled sand, and 5.5 parts of corncob particles.

Embodiment 2

[0061] The recycled concrete mine filling material of the present embodiment is composed of the following raw materials by weight: 25 parts of cement, 50 parts of water, 85 parts of recycled sand, and 8 parts of corncob particles.

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Abstract

The invention belongs to the technical field of mine backfilling, discloses a recycled concrete mine filling material prepared from corncobs and a preparation method of the recycled concrete mine filling material, and aims to solve the problems that the cost is high, the filling material is easy to shrink and a filling body shrinks when cement is adopted for mine filling. The recycled concrete mine filling material is prepared from the following raw materials in parts by weight: 25 parts of cement, 30-50 parts of water, 55-85 parts of recycled sand and 5.5-8 parts of corncob particles. According to the invention, a large amount of solid wastes (corncob and reclaimed sand) existing in China are fully utilized and reasonably proportioned, so that the filling material specially used for mine filling can be conveniently and quickly manufactured, and the problems of settlement, collapse and the like caused by shrinkage and shrinkage after solidification of the existing mine filling material can be solved; and meanwhile, the cost of the mine filling material is reduced.

Description

technical field [0001] The invention belongs to the technical field of mine backfilling, and in particular relates to a corncob-made recycled concrete mine filling material and a preparation method thereof, which are used for backfilling a mine to prevent the mine from collapsing after mining. Background technique [0002] my country's mines are rich in resources. With the excavation of mines, in order to reduce mine collapse, mine backfilling is an essential measure. Backfill mining is the most popular mining method at present, which can effectively alleviate the problems of surface collapse and solid waste discharge caused by mining, and effectively improve the recovery rate of deeply buried ore bodies and ore pillars. According to statistics, in the underground mines currently mined by the cemented filling method, the filling cost accounts for about 55% of the total mining cost, while the cement cost accounts for more than 70%. Moreover, cement is used as a cementing mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/00724C04B2201/50C04B2201/20C04B2111/00017C04B14/06C04B18/16C04B18/248Y02W30/91
Inventor 赵瑜张坤王超林毕靖沈明轩韦韬李秋义李炀刘腾龙吴胜锋樊其昌彭美雪李玉婷刘兵
Owner GUIZHOU UNIV
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