Abstract
Abstract The possibility of fixing sandy soils with a cement-sand mortar based on finely ground slag and an expanding sulfoferrite additive is considered. Cement compositions for the preparation of cement-sand solutions were prepared by joint and separate grinding in a ball mill. Studies of the physical and mechanical, deformation and structural characteristics of cement-sand mortar in carbonate and carbonate-sulfate media have been carried out. It has been established that under the influence of carbonate and sulfate ions a protective layer of calcium ferrite trihydrosulfide is formed, which prevents the pervasion of aggressive solutions into the cement stone, thereby providing compaction, hardening and expansion of the hardening system.
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