A construction method of core-shell structure ceramsite as concrete coarse aggregate

Abstract

The invention discloses a construction method for using core-shell structure ceramsite as concrete coarse aggregate. The method utilizes the characteristics that core-shell structure ceramsite has good spherical shape and is conducive to uniform dispersion and accumulation, and uses core-shell structure ceramsite as concrete coarse aggregate. Aggregate, pre-wet and evenly disperse and accumulate in the mold, and then pour mortar into the mold. During the pouring process, the mortar fills the pores left by the accumulation of core-shell structure ceramsite, and the core-shell structure ceramsite is evenly distributed in the mortar. middle. This construction method is simple and easy to operate, will not damage the structure of the core-shell structure ceramsite during the construction process, and can improve the situation that ceramsite concrete is prone to delamination and segregation during the pouring process.

Description

technical field [0001] The method belongs to the technical field of building construction, and in particular relates to a construction method in which core-shell structure ceramsite is used as concrete coarse aggregate. Background technique [0002] With the implementation of my country's industrial transformation work, the number of closed and relocated enterprises in my country has increased significantly. At the same time, my country's urbanization rate has continued to increase, and the existing land resources in cities are very scarce. Industrial wasteland cannot be directly reused due to serious pollution of heavy metals and organic matter in the soil. CN109513724A discloses a preparation method in which polluted soil is granulated and nucleated, then coated with clean soil or other mineral materials on the surface, and fired at high temperature to form ceramsite. The safe decomposition of organic pollutants is ensured by high-temperature firing of ceramsite, and the h...

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Problems solved by technology

[0003] However, due to the density of the core-shell structure ceramsite prepared by the above method and the traditional coarse aggregate are small, and the shell strength is relatively low, the ceramsite concrete prepared by the traditional concrete production method is prone to occur: the ceramsite is easy to float and break during the mixing process, resulting in The uneven structure and low strength of ceramsite concrete limit the wide application of shell-core structure ceramsite in industrial construction.

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