A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a modified phosphogypsum and a preparation method thereof. The preparation method comprises the following steps: in inert gas atmosphere, phosphogypsum is calcined for 1-5 hours at flue gas temperature being 900-1100 DEG C to obtain the product. The quality of the modified phosphogypsum prepared by the preparation method exceeds a national standard GB9776-88 superior product standard, strength of the modified phosphogypsum can reach the strength of a 32.5# cement, the setting and hardening speed of the phosphogypsum is fast, application is wide, the phosphogypsum is especially and widely used for wall materials sprayed and filled with a dry-mixed mortar and a steel structure-combined 3D printing PC construction material, and has wide market prospect.
The invention provides a modified phosphogypsum and a preparation method thereof. The preparation method comprises the following steps: in inert gas atmosphere, phosphogypsum is calcined for 1-5 hours at flue gas temperature being 900-1100 DEG C to obtain the product. The quality of the modified phosphogypsum prepared by the preparation method exceeds a national standard GB9776-88 superior product standard, strength of the modified phosphogypsum can reach the strength of a 32.5# cement, the setting and hardening speed of the phosphogypsum is fast, application is wide, the phosphogypsum is especially and widely used for wall materials sprayed and filled with a dry-mixed mortar and a steel structure-combined 3D printing PC construction material, and has wide market prospect.
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