Concrete containing regenerated micro powder and preparation method thereof

A technology of recycled micropowder and concrete, which is applied in the field of concrete, can solve problems such as air pollution and human health effects, and achieve the effects of prolonging service life, enhancing anti-ultraviolet performance, and improving compactness

Inactive Publication Date: 2019-11-22
广州铁诚工程质量检测有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the utilization rate of resources, construction waste is usually crushed for the production and processing of recycled aggregates. However, in the process of crushing and screening of recycled aggregates, it is inevitable to generate about Micropowder with a diameter of less than 0.16mm, the particle size of the micropowder particles is small, and floating in the atmosphere is likely to cause serious air pollution and affect human health. Therefore, there is still room for improvement

Method used

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  • Concrete containing regenerated micro powder and preparation method thereof
  • Concrete containing regenerated micro powder and preparation method thereof
  • Concrete containing regenerated micro powder and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0069] A concrete containing recycled micropowder, comprising the following components:

[0070] Portland cement 17.5kg; water 6.5kg; sand 32.5kg; stone 42.5kg; recycled micropowder 1kg.

[0071] The preparation method of concrete containing recycled micropowder is as follows:

[0072] S1. Preparation of regenerated micropowder: put construction waste into the crusher and crush it into regenerated micropowder with a particle size of 0.1-0.15 mm, and then use a screen to screen out the particles with too large particle size and put them back into the crusher for recrushing until All particles that are crushed pass through the sieve.

[0073] S2. Concrete preparation: Add 17.5kg of Portland cement into a 150L stirring tank, stir at a speed of 250r / min at room temperature, add 6.5kg of water while stirring, and then add sand while stirring 32.5kg, 42.5kg of stone and 1kg of the regenerated micropowder prepared by S1, after stirring evenly, the concrete containing the regenerate...

Embodiment 2

[0075] A concrete containing recycled micropowder, comprising the following components:

[0076] Portland cement 15kg; water 8kg; sand 35kg; stone 40kg; recycled micropowder 1.2kg.

[0077] The preparation method of concrete containing recycled micropowder is as follows:

[0078] S1. Preparation of regenerated micropowder: put construction waste into the crusher and crush it into regenerated micropowder with a particle size of 0.1-0.15 mm, and then use a screen to screen out the particles with too large particle size and put them back into the crusher for recrushing until All particles that are crushed pass through the sieve.

[0079] S2. Concrete preparation: Add 15kg of Portland cement into a 150L stirring tank, and stir at a speed of 250r / min under normal temperature conditions, add 8kg of water while stirring, and after stirring evenly, add 35kg of sand while stirring, 40kg of stone and 1.2kg of regenerated micropowder prepared by S1, after stirring evenly, the concrete ...

Embodiment 3

[0081] A concrete containing recycled micropowder, comprising the following components:

[0082] Portland cement 20kg; water 5kg; sand 30kg; stone 45kg; recycled micropowder 0.7kg.

[0083] The preparation method of concrete containing recycled micropowder is as follows:

[0084] S1. Preparation of regenerated micropowder: put construction waste into the crusher and crush it into regenerated micropowder with a particle size of 0.1-0.15 mm, and then use a screen to screen out the particles with too large particle size and put them back into the crusher for recrushing until All particles that are crushed pass through the sieve.

[0085] S2. Concrete preparation: Add 20kg of Portland cement into a 150L mixing tank, stir at a speed of 250r / min at room temperature, add 5kg of water while stirring, and then add 30kg of sand while stirring, 45kg of stone and 0.7kg of regenerated micropowder prepared by S1, after stirring evenly, the concrete containing regenerated micropowder can b...

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Abstract

The invention discloses concrete containing regenerated micro-powder and a preparation method of the concrete. The concrete containing the regenerated micro powder comprises the following components in parts by mass: 15-20 parts of Portland cement; 5-8 parts of water; 30 to 35 parts of sand; 40 to 45 parts of stone; 0.7 to 1.2 parts of regenerated micro powder; wherein the regenerated micro powderis formed by directly crushing construction waste, the particle size of the regenerated micro powder is 0.1-0.15 mm, and the particle size of the stone is 5-25 mm. The preparation method comprises the following steps: S1, preparing the regenerated micro powder; S2, pretreating the regenerated micro powder; S3, preparing the concrete. The compressive strength and the ultraviolet resistance of theconcrete containing the regenerated micro powder are improved by fully utilizing the regenerated micro powder.

Description

technical field [0001] The invention relates to the concrete field, more specifically, it relates to a concrete containing regenerated micropowder and a preparation method thereof. Background technique [0002] Relevant data show that the consumption of the construction industry accounts for about 25%-40% of the world's energy consumption, and the output of construction waste accounts for 30%-40% of the total amount of urban waste in my country, with an annual output of nearly 700 million tons. [0003] In order to improve the utilization rate of resources, construction waste is usually crushed for the production and processing of recycled aggregates. However, in the process of crushing and screening of recycled aggregates, it is inevitable to generate about Micropowder with a diameter of less than 0.16 mm has a small particle size, and floating in the atmosphere is likely to cause serious air pollution and affect human health. Therefore, there is still room for improvement....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/00017C04B2111/27C04B2201/50C04B14/06C04B14/02C04B18/167C04B24/14C04B24/40C04B24/129
Inventor 韦胜春
Owner 广州铁诚工程质量检测有限公司
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