A geopolymer solidified waste incineration bottom ash base material
A technology of waste incineration and geopolymer, applied in solid waste management, sustainable waste treatment, cement production, etc., can solve problems such as land occupation and secondary pollution, reduce land occupation, reduce waste disposal costs, and reduce building materials effect of dosage
Active Publication Date: 2019-10-29
ZHEJIANG UNIV OF TECH
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Problems solved by technology
Because the bottom ash has less toxic and harmful substances, it is often landfilled, which not only occupies the land but also easily produces "secondary pollution"
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[0026] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.
[0027] A geopolymer solidified waste incineration bottom ash base material, which is composed of geopolymer, waste incineration bottom ash, construction waste reclaimed materials and waste tire rubber powder according to a certain mixing ratio. It is proposed to combine laboratory tests and theoretical analysis. , from the physical properties of materials and the design of material mix ratio;
[0028] (1) Incineration Bottom Ash Treatment
[0029] In order to avoid dust pollution and cost consumption caused by long-distance transportation, the bottom ash of waste incineration follows the principle of on-site (nearest) recycling. After pretreatment, the bottom ash with better structural durability and stability is obtained, and the metal-free incineration bottom ash is obtained through magnetic separatio...
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Abstract
The invention provides a geopolymer-solidified waste incineration bottom ash base material, which is made of the following components by weight percentage: 7%-9% of geopolymer, 10%-14% of waste tire rubber powder, and 1%-4% of water %, the rest is recycled aggregate, which is composed of coarse aggregate construction waste regenerated material with a particle size of 4.75 mm to 13.2 mm and fine aggregate waste incineration bottom ash with a particle size range of 0.1 mm to 4.75 mm; the coarse aggregate The regenerated materials of construction waste include waste bricks, waste rubble and waste ceramics; the fine aggregate is waste incineration bottom ash; based on the total mass of recycled aggregate construction waste regenerated materials and waste incineration bottom ash, the The mass fraction of the coarse aggregate of the regenerated construction waste material is 40%-60%, and the mass fraction of the fine aggregate waste incineration bottom ash is 60%-40%. The geopolymer solidified waste incineration bottom ash base material can be used as a solidified base in road laying. The invention forms a high-strength, stable and durable solidified base layer, fully utilizes waste, and is beneficial to environmental protection.
Description
technical field [0001] The invention belongs to the technical field of pavement base material in road engineering, and in particular relates to a new type of base material with geopolymer as solidification material, incineration bottom ash as main raw material, and regenerated construction waste material and waste tire rubber particles as gradation supplementary raw materials Material. Background technique [0002] With the continuous acceleration of the urbanization process, domestic waste is also increasing rapidly. Waste incineration is considered to be the best way to deal with domestic waste at present, because incineration can reduce the volume of waste by more than 80%, and the remaining 20% is the incineration product (including bottom ash and fly ash, wherein bottom ash accounts for more than 80%). Because the bottom ash has less toxic and harmful substances, it is often landfilled, which not only occupies the land but also easily produces "secondary pollution". ...
Claims
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IPC IPC(8): C04B28/00C04B12/00C04B18/22C04B18/10
CPCC04B12/005C04B28/006C04B2111/0075C04B2111/00732C04B18/22C04B18/16C04B18/165C04B18/10Y02P40/10Y02W30/91C04B12/04C04B14/106C04B18/20C04B22/062
Inventor 刘萌成陶君军
Owner ZHEJIANG UNIV OF TECH