METHOD FOR COMPACTION OF SOILS AND OTHER POWDERY MATERIALS BY ROLLING (VERSIONS) Russian patent published in 2009 - IPC E01C19/26 

FIELD: construction, road engineering.

SUBSTANCE: invention is related to methods for compaction of soils and other powdery materials by rolling with compactor rolls. Invention is based on objective to compact powdery material with density that corresponds to ultimate strength by compactor rolls. For this purpose in method of powdery material layer compaction by rolling, which consists in rolling of previously poured loose layer of powdery material by compactor rolls, loose layer of powdery material is filled between lateral sides of rigid enclosure, height of which is equal to thickness of compacted layer, and compactor rolls are rolled on rigid enclosure that limits compacted zone, at the same time compacted powdery material is continuously filled in zone in front of rolls along with their travel in layer that is higher than thickness of compacted layer by 1/20-1/50 of roll diametre until powdery material starts to be pressed back in wave in front of rolls, afterwards material filling in front of rolls is stopped, and continuing to move rolls along enclosure, created wave is caught up with at the end of enclosure, afterwards rolls moving is stopped. In suggested method always, without any control, strength of powdery material under compactor rolls will correspond to specific pressure of roll at powdery material, but may not exceed ultimate strength. Achievement of ultimate strength is characterised by extrusion of powdery material from under roll.

EFFECT: compaction of powdery material until ultimate strength.

21 cl, 13 dwg