Manufacturing method of green, environment-friendly and multifunctional concrete building blocks

A concrete block, green and environmentally friendly technology, applied in the field of resource recycling and building materials, can solve the problems of high energy consumption, failure to prevent radiation and clean air, and failure to achieve multi-functional products

Inactive Publication Date: 2018-05-29
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods fail to integrate the functions of radiation protection and air purification into one product, that is, the multifunctionality of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A manufacturing method of green and environment-friendly multifunctional concrete block, specifically including the following steps: firstly, cement, fly ash, recycled fine aggregate, Nano-TiO 2 And the acid-washed lead-containing waste cathode ray tube cone glass aggregates were dry mixed in a stirring pot for 3 minutes, then slowly added water and stirred for 3 minutes, after stirring, the mixture was put into a 70×70×70mm steel mold for two times It is formed by mechanical pressing, and finally placed in a standard curing room for 24 hours and then demolded.

[0017] The above materials: Cement: Fly ash: Recycled fine aggregate: TFG: Water: Nano-TiO 2 The weight ratio is 0.83:6.66:7.90:1:0.17.

[0018] The concrete block produced by this embodiment meets the requirements of basic mechanical strength, and the water absorption and drying shrinkage rate decrease with the incorporation of TFG. The expansion rate caused by the alkali-aggregate reaction is below 0.1%, which mee...

Embodiment 2

[0020] A manufacturing method of green and environment-friendly multifunctional concrete block, which specifically includes the following steps: firstly, cement, fly ash, recycled coarse aggregate, Nano-TiO 2 And the acid-washed lead-containing waste cathode ray tube cone glass aggregates were dry mixed in a stirring pot for 3 minutes, then slowly added water and stirred for 3 minutes, after stirring, the mixture was put into a 70×70×70mm steel mold. Use 25N / mm once 2 The pressure of the test piece is compacted, and then the surface of the test piece is smoothed with a scraper, and then 30N / mm 2 The test piece is pressed into a shape under the pressure of 5%; finally it is put into a standard curing room for 24 hours and then demolded.

[0021] The above materials cement: fly ash: recycled coarse aggregate: TFG: water: Nano-TiO 2 The weight ratio is 2.50:0.83:3.30:11.80:1:0.17.

[0022] The concrete block produced by this embodiment meets the requirements of basic mechanical strengt...

Embodiment 3

[0024] A manufacturing method of green environmental protection multifunctional concrete block, specifically including the following steps: firstly, cement, fly ash, recycled coarse aggregate, recycled fine aggregate, Nano-TiO 2 And the acid-washed lead-containing waste cathode ray tube cone glass aggregates were dry mixed in a stirring pot for 3 minutes, then slowly added water and stirred for 3 minutes, after stirring, the mixture was put into a 100×100×10mm steel mold and divided into two Sub-mechanical compression molding; finally placed in a standard curing room for 24 hours, then demolded.

[0025] The above materials cement: fly ash: recycled coarse aggregate: recycled fine aggregate: TFG: water: Nano-TiO 2 The weight ratio is 2.50:0.83:13.30:13.30:15.80:1:0.17.

[0026] The concrete block produced by this embodiment meets the requirements of basic mechanical strength, and the water absorption and drying shrinkage rate decrease with the incorporation of TFG. The expansion ra...

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PUM

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Abstract

The invention aims to provide a manufacturing method of multifunctional concrete building blocks through effectively pressing building wastes, recycled lead-containing waste cathode ray tube cone glass (TFG) and Nano-TiO2 through a pressing machine. The method comprises the following steps: uniformly dry-stirring cement, fly ash, recycled fine aggregates, recycled coarse aggregates, the Nano-TiO2and lead-containing waste glass aggregates subjected to acid washing to obtain a mixture; then adding water into the mixture; finally putting the obtained mixture into a steel mould; firstly performing pressing and compaction at a first time by using the pressing machine; leveling the mixture on the surface of a test piece and then performing pressing and molding by using the pressing machine to obtain the green, environment-friendly and multifunctional concrete building blocks. According to the concrete building blocks manufactured by using the method disclosed by the invention, the requirements on mechanical performance and durability performance can be met; moreover, the concrete building blocks also have a plurality of practical functions, such as sealing and safekeeping of lead oxide,radiation prevention and air purification, and can be applied to places, such as roads, hospitals, factories and nuclear industry, which require air purification or X-ray protection.

Description

Technical field [0001] The invention relates to the field of resource recycling and building materials, in particular to a method for making green environmental protection multifunctional concrete blocks by using lead-containing waste cathode ray tube cone glass, recycled aggregates and nano-titanium dioxide. Background technique [0002] On the one hand, with the rapid development of my country's flat panel display industry, a large number of traditional cathode ray tube electronic display products are scrapped. More than 25 million cathode ray tube TV products are scrapped every year. Cathode ray tube glass mainly includes screen glass and cone glass. The content of cone glass is 1 / 3, and the lead content is 20% to 25%, which is a toxic substance. Long-term exposure to the cone glass of waste cathode ray tubes containing lead oxide can easily cause lead ions to dissolve into water or soil, pollute water resources and soil, and endanger human health. On the other hand, a large ...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/02C04B18/08C04B18/16C04B14/305C04B14/22
Inventor 林忠财潘智生刘颐
Owner HUNAN UNIV
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