POLYMERCEMENT COMPOSITION, METHOD OF FILLING VOIDS BY MEANS OF SAID COMPOSITION (VERSIONS) AND DEVICE FOR METHOD EMBODIMENT Russian patent published in 2002 - IPC

FIELD: production of polymercement composition; geophysical engineering and construction engineering under flooded conditions. SUBSTANCE: polymercement composition includes at least cement and hydrolyzed water-swollen loosely cross-linked polyacrylamide in the amount from 0.01 to 15.0 mas.% of mass of cement and may also contain inert filler, sand for example. Said polyacrylamide may be obtained through radical polymerization of acrylamide or radical copolymerization of acrylamide with divinyl compound or radiation-chemical cross-linking of water-soluble polyacrylamide. Method of filling voids consists in delivery of described composition to voids and its hardening. According to one version, method consists on radiation exposure of filling mixture containing water-soluble polyacrylamide, cement and water in the course of delivery of it to void. Device proposed for said method embodiment includes tube with radioactive source in area where filling mixture flows. Filling mixture system is connected with one end of tube; other end of tube is open escape of filling mixture. Radioactive source is made in form of neutral or γ- radiation oscillator. EFFECT: enhanced efficiency. 13 cl, 1 dwg