A permanently modified phosphogypsum composite thermal insulation formwork and its manufacturing method

Abstract

The invention relates to a permanently modified phosphogypsum composite thermal insulation template and a manufacturing method thereof. The composite thermal insulation formwork is prepared by coating the outside of the extruded board (1) with an interface agent (2), then coating the outside with a modified phosphogypsum slurry (4), and filling the middle of the modified phosphogypsum slurry with a reinforcing material (3). Modified phosphogypsum slurry is made by mixing calcined phosphogypsum powder, cement, fly ash, quicklime, slag micropowder, vitrified microspheres, latex powder, water reducer, retarder, etc. in a certain proportion and then mixed with water. The invention has the advantages of simple preparation process, fast forming, large output, time-saving, labor-saving and labor-saving, and most of the raw materials used are solid waste, which conforms to national policies, is energy-saving and environmentally friendly, and has remarkable economic benefits.

Description

technical field [0001] The invention belongs to the field of building energy saving and structural integration, and specifically relates to a permanently modified phosphogypsum composite thermal insulation template and a manufacturing method thereof. Background technique [0002] Building energy conservation and the utilization of phosphogypsum are both the needs of the country's sustainable development. Building energy saving and structural integration are the development direction of wall materials, and the permanent demolition-free formwork is in line with this development direction. However, the permanent demolition-free formwork that is widely used at present requires a lot of molds, sites, labor, etc. due to the long hydration time of the cement slurry used, which also greatly increases the cost and investment cost. Phosphogypsum, an industrial by-product, can only be stacked because it cannot be well utilized. This not only takes up a lot of land, but also pollutes g...

AI Technical Summary

Problems solved by technology

However, the permanent demolition-free formwork that is widely used at present requires a lot of molds, sites, labor, etc. due to the long hydration time of the cement slurry used, which also greatly increases the cost and investment cost.

Phosphogypsum, an industrial by-product, can only be stacked because it cannot be well utilized. This not only takes up a lot of land, but also pollutes groundwater due to the erosion of rainwater during the stacking process. There is no grass around the stacking site, which seriously affects the ecological environment.

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