Application of fluidized bed gangue slag of fluidized-bed furnace in-situ pouring concrete and concrete precast-concrete

Abstract

An application of the gangue slage from fluidized-bed furnace in in-situ pouring concrete or in precast-concrete members without traditional fine aggregate (natural sand and artificial sand) features that said slage, cement, lime and coarse aggregate are proportionally mixed.

Description

Technical field: [0001] The invention relates to building materials, in particular to the application of fluidized bed coal gangue boiling slag (ash) to replace traditional engineering fine aggregates, including natural sand and artificial sand, in cast-in-situ concrete and concrete prefabricated components. Background technique: [0002] Slag is the combustion product of industrial boilers (such as coal power industry), and fluidized slag is the combustion product of fluidized fluidized furnace. Fluidized bed furnace, also known as bubbling bed, belongs to the first generation of fluidized bed combustion furnace. Boiling combustion is a combustion technology between firebed combustion of solid combustion and pulverized coal combustion. The air flow "fluidizes" and rolls up and down in a certain height space above the grate, which is similar to liquid boiling. The fuel graded particles are completely burned in such a violent and disorderly "boiling" state. Therefore, the f...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a technology that uses fluidized bed coal gangue boiling slag (ash) to replace traditional engineering fine aggregates, including natural sand and artificial sand, and is applied in cast-in-situ concrete and concrete prefabricated parts. This technology solves the problem of For a long time, the environmental pollution caused by fluidized bed coal gangue boiling slag (ash) is stable, the cost is low, and it can be widely used in prefabricated concrete such as prefabricated hollow floor slabs, flower panels, heat insulation panels, floor tiles, sleepers, etc. Components and cast-in-place concrete, under the condition of meeting the requirements of engineering specifications, broke the forbidden area of ​​people's traditional concept and opened up a new way for the comprehensive utilization of industrial waste