Wall body of steel frame filled with phosphogypsum-concrete composite wall and preparation method

Abstract

The invention discloses a wall body of a steel frame filled with a ardealite-concrete composite wall and a preparation method, and belongs to the technical field of comprehensive utilization of ardealite. The wall body comprises a steel frame and an ardealite-concrete combined wall, the ardealite-concrete combined wall is arranged in the steel frame, a deformation joint is reserved between the ardealite-concrete combined wall and the steel frame, a flexible plate is arranged in the deformation joint, a plurality of clamping pieces are arranged at the positions, corresponding to the ardealite-concrete composite wall, of the steel frame, and the ardealite-concrete composite wall comprises a concrete frame and an ardealite-based composite cementing material filled in the concrete frame. The wall body can be manufactured only through general assembly on site, and the wall body manufacturing efficiency is high; the steel frame and the ardealite-concrete composite wall are combined into a whole, so that the lateral stiffness of the wall body is greatly improved; and the use amount of semi-hydrated ardealite can be greatly reduced, and the energy consumption of ardealite dehydration is remarkably reduced.

Description

technical field [0001] The invention relates to a steel frame-filled phosphogypsum-concrete composite wall and a preparation method thereof, belonging to the technical field of comprehensive utilization of phosphogypsum. Background technique [0002] Phosphogypsum is an industrial by-product produced during the wet process of phosphoric acid production. Usually, about 5.0 tons of phosphogypsum are produced for every ton of phosphoric acid produced. The main chemical composition of phosphogypsum is calcium sulfate dihydrate (CaSO4·2H2O), and its content is as high as 90%. , It also contains a small amount of unreacted apatite, sulfuric acid, unwashed phosphoric acid, fluoride and other harmful substances. The data shows that the annual output of phosphogypsum in my country is basically maintained at 75 million tons to 78 million tons. In recent years, the utilization rate of phosphogypsum has shown an overall upward trend, from 36.4% in 2016 to 40% in 2019, but its utilizatio...

AI Technical Summary

Problems solved by technology

[0005] First, after the concrete frame is docked with the prefabricated concrete ground beam, it is necessary to fill in the groove with cast-in-place concrete. The concrete sets for a long time, which greatly reduces the efficiency of on-site construction;

[0006] Second, the bottom of the concrete frame is connected to the prefabricated concrete ground beam through frame column steel bars, longitudinal tie bars, cast-in-place self-compacting concrete, and the lateral stiffness of the wall panels is poor;

[0007] Third, the raw material of phosphogypsum-based composite gelling filler is mainly dehydrated phosphogypsum. Due to the high energy consumption of phosphogypsum dehydration at high temperature, the production cost of wallboard will be significantly increased.

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