Deformations of gypsofied soils in the bases of building and structures in erevan

Abstract

1. The gypsum salinized soils (belozem) of Erevan cannot be used as the bases of buildings and structures without taking special measures. The most effective of these measures is the complete elimination of constant seepage of water through such soils by constructing around the perimeter of each building a closed watertight wall extending to the solid impervious bedrocks on top of which is placed an impervious covering over the entire area of the building at the level of the lower surface of the foundations. 2. Consolidation and damping of belozem do not eliminate its seepage leaching and do not prevent loss of strength. Owing to the considerable inhomogeneity of belozem with respect to water permeability preconstruction consolidation of these soils by flooding also cannot provide uniform and sufficiently complete removal of water-soluble gypsum from its composition, and consequently cannot prevent further slump-type settlements upon flooding by waters during operation of the buildings and structures. 3. The requirements and recommendations on elimination of sources of flooding of the base soils of buildings and structures during their operation are ineffective owing to the presence of a multitude of difficultly controllable sources of flooding both in the building itself and beyond its limits.