FIELD: building materials.
SUBSTANCE: invention relates to preparing a binding agent. Proposed raw mixture comprises the following components, wt.-%: alunite, 25.0-35.0; pumice, 10.0-20.0; blast furnace slag, 25.0-40.0; alumina, 10.0-20.0, and lime, 5.0-10.0. Invention provides enhancing strength of a binding agent prepared from the proposed raw mixture.
EFFECT: improved and valuable property of binding agent.
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