FIELD: construction engineering; production of dry building mixes for protection of structures against aggressive external factors.
SUBSTANCE: proposed method includes grinding of expanded-clay lightweight concrete whose service life has expired or off-grade expanded-clay lightweight concrete together with natural witherite in presence of plasticizing additive. Proposed method excludes sulfate and biological corrosion and makes it possible to use expanded-clay lightweight concrete whose service life has expired or off-grade expanded-clay lightweight concrete.
EFFECT: enhanced waterproofness of structures at high humidity; utilization of technogenic waste.
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