Method for preparing high-strength fabricated artificial stone from construction waste
A construction waste, prefabricated technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems such as the inability of high-value utilization of recycled micropowder and the difficulty of separating brick and concrete.
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[0026] The present invention will be described in further detail below in conjunction with specific examples.
[0027] A method for preparing high-strength assembled artificial stone from construction waste, which is characterized in that it comprises the following steps: separating brick and concrete construction waste through gravity separation, grinding the concrete in a hot air self-mill to obtain recycled aggregate and fine powder; After adding calcium raw material, use steam kinetic energy grinding, and then rapid thermal activation in countercurrent heater to obtain active micropowder; add activator, reinforcing agent, surfactant, water repellent, water to active micropowder, stir evenly, and shape , Obtain high-strength fabricated artificial stone after curing.
[0028] See Table 1 for the formulation of calcium raw materials added to the micropowder, the rapid thermal activation temperature and time in the countercurrent heater, and the activity of the active micropow...
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