Preparation method of high-activity red mud-based concrete admixture
A technology of concrete and admixture, applied in the direction of cement production, etc., to achieve the effect of simple production process, obvious plasticizing effect, and increasing compactness
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[0021] Example 1: Using red mud as the main raw material, supplemented with calcium carbide slag and desulfurized gypsum industrial waste residue, the high-activity red mud-based concrete admixture obtained by thermally activating the mixture through the combustion heat energy of the unburned coal gangue itself; In the process of making concrete materials, PO52.5, or PO42.5, or PC32.5 Portland cement is replaced by the red mud composite material prepared by the invention according to the weight ratio of 20%.
[0022] The raw material composition and mass percentage of the method are as follows: 40-60% of red mud; 25-45% of unburned coal gangue; 10% of carbide slag; 5% of desulfurized gypsum;
[0023] The preparation method includes: drying, weighing ingredients, grinding and mixing process, calcination process and application process, and the specific process is as follows:
[0024] (1) Drying, weighing, batching and grinding mixing process: dry the above raw materials and wei...
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