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Lithium slag recycled concrete, preparation method thereof and building component

A technology of recycled concrete and building components, which is applied in the field of building materials, can solve environmental pollution and other problems, and achieve the effects of mitigating pollution, reducing pollution, and superior technical and economic indicators

Inactive Publication Date: 2020-08-25
EAST CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this kind of slag is not utilized, it will cause serious pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a kind of lithium slag recycled concrete, and its preparation method comprises the following steps:

[0022] S1. Weigh 800g of recycled coarse aggregate, 300g of fine aggregate, 500g of cement, 35g of lithium slag, 15g of air-entraining agent, 2g of foaming agent, 3g of water reducing agent, and 200g of water, and set aside. Among them, the recycled coarse aggregate is made from discarded high-strength concrete after crushing, and its average particle size is 5mm; the fine aggregate is commercially available fine sand, and its fineness modulus is 2.5; the cement is commercially available in strength grade It is grade 52.5 cement; lithium slag is a by-product produced in the process of producing lithium sulfate by sulfuric acid method after calcining spodumene, and contains more amorphous silica and aluminum oxide; lithium slag is used in It can be pounded in advance so that its density is 2.3g / m 3 , the specific surface area is 1150m 2 / kg; th...

Embodiment 2

[0026] This embodiment provides a kind of lithium slag recycled concrete, and its preparation method comprises the following steps:

[0027] S1. Weigh 1200g of recycled coarse aggregate, 700g of fine aggregate, 200g of cement, 100g of lithium slag, 35g of air-entraining agent, 12g of foaming agent, 8g of water reducing agent, and 500g of water, and set aside. Among them, the recycled coarse aggregate is made from discarded high-strength concrete after crushing, and its average particle size is 10mm; the fine aggregate is commercially available fine sand, and its fineness modulus is 2.8; the cement is commercially available in strength grade It is grade 62.5 cement; lithium slag is a by-product produced in the process of producing lithium sulfate by sulfuric acid method after calcining spodumene, and contains more amorphous silica and aluminum oxide; lithium slag is used in It can be pounded in advance so that its density is 2.4g / m 3 , the specific surface area is 1200m 2 / kg...

Embodiment 3

[0031] This embodiment provides a kind of lithium slag recycled concrete, and its preparation method comprises the following steps:

[0032] S1. Weigh 900g of recycled coarse aggregate, 600g of fine aggregate, 300g of cement, 40g of lithium slag, 18g of air-entraining agent, 4g of foaming agent, 4g of water reducing agent, and 300g of water, and set aside. Among them, the recycled coarse aggregate is made by crushing discarded high-strength concrete, and its average particle size is 6mm; the fine aggregate is commercially available fine sand, and its fineness modulus is 2.6; the cement is commercially available in strength grade It is grade 52.5 cement; lithium slag is a by-product produced in the process of producing lithium sulfate by sulfuric acid method after calcining spodumene, and contains more amorphous silica and aluminum oxide; lithium slag is used in It can be pounded in advance so that its density is 2.35g / m 3 , the specific surface area is 1160m 2 / kg; the air-e...

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Abstract

The invention is applicable to the technical field of building materials, and provides lithium slag recycled concrete, a preparation method thereof and a building component, and the lithium slag recycled concrete comprises the following components: recycled coarse aggregate, fine aggregate, cement, lithium slag, an air entraining agent, a foaming agent, a water reducing agent and water. Accordingto the lithium slag recycled concrete provided by the invention, lithium slag and recycled coarse aggregate resources are utilized on site, the preparation method is simple, the pollution to the environment can be reduced, and the lithium slag contains more compounds such as amorphous silicon dioxide and aluminum oxide, has higher volcanic ash activity, and has very excellent technical and economic indexes; besides, the recycled coarse aggregate utilizes waste concrete, has the advantages of using local materials, turning waste into useful and the like, and reasonably utilizes resources and effectively protects the environment under the condition that material components meet the requirements.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a lithium slag recycled concrete, a preparation method thereof and building components. Background technique [0002] With the vigorous development of industry, a large amount of industrial waste residue and industrial tailings have been produced. At present, the larger lithium salt plants discharge no less than 5 tons of lithium slag every year. So far, at least more than one million tons of lithium slag have been piled up, covering a large area. If this kind of slag is not utilized, it will cause serious pollution to the environment. [0003] In addition, with the vigorous development of the construction industry, more and more construction waste has been piled up, and landfills are generally used for disposal. If the construction waste is used in the industry, it will protect the environment and become a sustainable economic development. An important p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/10C04B111/40
CPCC04B28/02C04B2201/50C04B2111/40C04B2111/00017C04B18/16C04B14/06C04B18/0427C04B24/32C04B24/16C04B2103/302C04B38/10C04B2103/0068
Inventor 梁炯丰李晓宝王俭宝杨文瑞梁永朵肖烨程丽红顾连胜
Owner EAST CHINA UNIV OF TECH
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