METHOD TO PREPARE MONOLITH OF MINERAL SOILS TO IDENTIFY FILTRATION COEFFICIENT Russian patent published in 2012 - IPC E02D1/04 G01N33/24 

FIELD: construction.

SUBSTANCE: method to prepare a monolith of mineral soils to identify a filtration coefficient includes picking of the monolith with a cutting sampling ring with subsequent filling of a filler between the inner wall of the ring and the outer vertical surface of the monolith. Prior to filling of the filler the diameter of the soil monolith is reduced by a value of doubled width of a cylindrical ring slot complying with thickness of a peripheral area of the monolith with soil properties damaged during picking of the monolith, but not less than 3 mm, by cutting of a cylindrical ring slot in the monolith between the inner surface of the ring and the outer vertical surface of the monolith. The filler used is a melted waterproof material with low melting temperature, for instance, mineral wax, besides, when identifying a filtration coefficient of mineral soils on monoliths the filtration area is accepted as complying with the soil monolith diameter D₀ determined on the basis of the relation.

EFFECT: higher accuracy and reliability of filtration ratio identification, provision of accuracy of monolith preparation for filtration tests.

2 cl