Pavement brick prepared based on domestic waste incineration fly ash and preparation method thereof

Abstract

The invention relates to the technical field of pavement bricks, in particular to a pavement brick prepared based on domestic waste incineration fly ash and a preparation method thereof. The pavement bricks, measured in parts by mass, include: 540-720 parts of slag and 45 parts of calcium carbide slag 90 parts, 180-450 parts of household waste incineration fly ash and 2600-2750 parts of sand. The pavement brick prepared by the invention not only further reduces the floor space of domestic waste incineration fly ash, calcium carbide slag and slag, but also alleviates the harm to the environment and organisms, and through the rational design of the formula, the interaction between the raw materials Synergistic effect, the prepared pavement brick has good appearance quality and high compressive strength, and at the same time, the present invention does not need sintering, saves energy, has simple method, low cost and good economic benefit, especially in the aspect of heavy metal solidification, in harsh Under the conditions, the leaching concentration of heavy metals still meets the national standard. While preparing pavement bricks with excellent performance, industrial solid waste and hazardous waste are fully utilized to ensure the full utilization of resources.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a pavement brick and a preparation method thereof. The pavement brick has very high strength, can still maintain its mechanical properties under very harsh conditions, and the leaching concentration of heavy metals is still lower than the national standard. Background technique [0002] Bricks are one of the indispensable materials in the construction industry. At present, in my country, the commonly used method of producing bricks is to mix raw coal, coal gangue and other bricks with cement as internal fuels. As the demand for bricks increases, these Excessive exploitation of non-renewable resources has had a great negative impact on the ecological environment. [0003] Domestic waste incineration fly ash is the residue collected in the waste incineration flue gas purification system. The harmless, reduction and resource utilization of domestic waste incineration fly ash, slag ...

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned status quo, if large-area solid waste is piled up and domestic waste incineration fly ash can be utilized as resources at the same time, their disposal problems can be solved to a large extent, but the dissolution of harmful heavy metals such as lead and chromium must be solved at the same time. Provide a practical solution

Images