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A kind of construction waste ash and preparation method thereof

A technology of construction waste and garbage ash, which is applied in the field of construction materials, can solve the problems of construction waste not being reused, urban public hazards, etc., and achieve the effects of promoting the development of circular economy, reducing pollution, and saving primary resources

Active Publication Date: 2016-08-24
江苏地盟绿色能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, since most of the construction waste has not been reused, it has become a major public hazard in the city

Method used

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  • A kind of construction waste ash and preparation method thereof
  • A kind of construction waste ash and preparation method thereof
  • A kind of construction waste ash and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 93kg of raw construction waste bricks, 7kg of gypsum, and 20mg of externally mixed activator according to the weight ratio. First crush 93kg of construction waste bricks and 7kg of gypsum with a crusher to particles with an average particle size of ≦30mm, dry them until the moisture content is less than 2%, grind them with a double-roller machine for 50 minutes, add a chemical activator, and continue grinding for 25 minutes Later to specific surface area ≥ 500m 2 / ㎏, ready-made product.

Embodiment 2

[0029] Weigh 88kg of raw construction waste concrete blocks, 12kg of gypsum, and 50mg of externally mixed activator according to the weight ratio. First crush 88kg of construction waste concrete blocks and 12kg of gypsum with a crusher to particles with an average particle size ≤ 30mm, dry until the moisture content is less than 2%, and then grind the powder with a double-roller machine for 45 minutes, then add a chemical stimulant, and continue powdering. Grind for 25 minutes until the specific surface area is ≥ 500 m 2 / ㎏, ready-made product.

[0030] The products made by the above two embodiments are better than the technical parameters of grade I fly ash in GB / T1596-2005 "Fly Ash Used in Cement and Concrete" through testing performance and technical requirements: specific surface area ≥ 465m 2 / ㎏, water content 0.1%, loss on ignition 3.7%, sulfur trioxide 2.98%, free calcium oxide 0.03%, stability 1.0㎜, activity 72%.

[0031] The specific detection results of the two exa...

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Abstract

The invention relates to construction waste dust and a preparation method thereof, and belongs to the technical field of construction materials. The construction waste dust is prepared from the following raw materials together with a chemical excitant in percentage by mass: 80-95% of construction wastes and 7-20% of gypsum, wherein the use amount of the chemical excitant accounts for 0.01-0.06% of the total amount of the construction wastes and gypsum; the construction wastes are construction waste bricks or concrete blocks of which metal and other impurities are removed. The inspection on the construction waste dust produced from the raw materials by using the preparation method shows that various technical indexes of the construction waste dust meet and even exceed the stand of the GB / T1596-2005 Fly Ash Used for Cement and Concrete, and the property of the construction waste dust is superior to that of fly ash. The construction waste dust can replace fly ash and is widely applicable to concrete and cement products. As a great amount of industrial wastes are recycled as regeneration resources, and original resources can be saved and replaced, the construction waste dust is beneficial to promoting circulation economic development, reducing pollution and protecting the ecological environment. The environment is not further polluted in the production process.

Description

technical field [0001] The invention relates to construction waste ash and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] With the acceleration of urban construction, a large amount of construction waste is produced. Construction waste mainly refers to waste bricks, concrete plates, cement blocks, waste slag, mortar and other wastes generated during the construction and demolition of various buildings and structures. The traditional treatment methods for these construction wastes are to transport them to the outskirts for accumulation, fill the ditches, or select concrete slabs and process them into recycled aggregates, but a large amount of waste cannot be reused. At present, since most of the construction waste has not been reused, it has become a major public hazard in the city. Contents of the invention [0003] In view of the above problems, the present invention provides a construction waste ash a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B18/16
CPCY02W30/91
Inventor 王品伦梁影
Owner 江苏地盟绿色能源科技有限公司