FIELD: construction.
SUBSTANCE: unit of a ground dam coupling with a concrete structure includes a coupling abutment. The surface of the abutment coupling with the water-retention part of the ground dam is coated with a bentonite mat, comprising layers of woven and non-woven geotextile, between which granules of sodium bentonite are arranged. The bentonite mat with a layer of woven geotextile adjoins a coupling abutment, and with the layer of a non-woven geotextile it faces the side of the ground dam.
EFFECT: increased filtration strength of the ground dam coupling unit with the concrete structure due to reduced chances for cracking in the area of the concrete abutment coupling with the ground dam, prevention of the soil material washing with water that moves directly along the coupling contact, and provision of this water amount monitoring.
7 cl, 4 dwg
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