Rapid evaluation method for volume density of light plastering gypsum

By constructing a quantitative relationship model between wet density and dry density, the bulk density of lightweight plaster can be quickly calculated, solving the problems of long cycle and poor timeliness of traditional testing methods. This enables real-time quality monitoring and production optimization, improving production efficiency and accuracy.

CN120908033APending Publication Date: 2025-11-07MEICHAO GROUP
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Patent Information

Application Number
CN202511176686.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-21
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Traditional methods for testing the bulk density of lightweight plaster are time-consuming and lack timeliness, failing to provide timely feedback on quality indicators during the production process, resulting in low production efficiency.

Method used

By constructing a quantitative relationship model between wet density and dry density, the water consumption for gypsum hydration is determined by experimental measurement or theoretical calculation. Combined with the standard consistency water addition and wet density, the bulk density is quickly calculated, enabling real-time monitoring and control of instantaneous parameters.

Benefits of technology

It enables rapid evaluation of the bulk density of lightweight plaster, with test results close to actual values ​​and an error of less than 3%. It can provide timely feedback on quality indicators during the production process, thereby improving production efficiency and control precision.

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Abstract

The invention relates to the field of material testing, in particular to a rapid evaluation method for the volume density of light plastering gypsum. According to the method, the time-consuming bottleneck of traditional testing is broken through by constructing the quantitative relation model of the wet density and the dry density. The method comprises the following core steps: (1) determining the hydration water consumption of a gypsum system: determining the water consumption (b%) required by complete hydration of gypsum through an actual measurement method or a theoretical calculation method; (2) obtaining real-time parameters: measuring the standard consistency water addition amount (w%) and the wet density (rho wet) of the freshly mixed slurry; and (3) quickly calculating the dry density: calculating the volume density (dry volume weight) through an exclusive formula based on the hydration water amount, the water adding amount and the wet density. According to the method, the volume density can be calculated based on the instant measurable parameters (such as the wet density and the water adding amount), instant evaluation of the volume density in the production process can be achieved so as to facilitate timely regulation and control, the defects that a traditional testing method is long in period and poor in timeliness are overcome, and the method is high in accuracy.
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