Furdey P. The substantiation of resource-saving recipes for tamping-backfill slurries based on slag wastes to eliminate the technogenic voids

On the basis of the first established regularities of rheological and structural mechanical processes in dispersed suspensions based on slag wastes it had been solved the urgent scientific and technical problem for the explanation of resource-saving recipes of tamping-backfill mixtures based on blast-furnace slags and ash-slags by damp removal in the thesis. On the basis of experimental researches it had been proved that the slag-clay mixtures by the rheological properties are ductile-plastic suspensions, clay supplement to slag suspension adsorptional binds a water and affects on a kinetics of solidification mixture only. It had been established a power regularity the kinetics of structuring for slag-clay suspensions based on blast-furnace slag with a specific surface area of particles of 4000 cm2/g and 10% additive of bentonite clay. For the first time it had been developed the cement-free and tamping suspensions. It had been experimentally revealed nonlinear dependence of set of plastic strength back-fill mixture based on ash-slag damp removal by the density of 1480 kg/m3 with the addition of clay and cement, which allowed to obtain a mixture of 2 MPa strength of a zero shrinkage. It had been improved methods of design the parameters for slag-clay tamping-backfill mixtures. An experimental-industrial works to eliminate of slope trunk by slag-clay suspensions were done, it was proved an economic efficiency of their use.