METHOD OF PREPARING MODIFIED STEEL-FIBRO-CONCRETE BLEND AND MODIFIED STEEL- FIBRO-CONCRETE BLEND Russian patent published in 2003 - IPC

FIELD: manufacture of building materials. SUBSTANCE: in a method of preparing modified steel-fibro-concrete blend for road and airdrome building, manufacturing and repairing bridge construction units involving stirring of cement, filler, steel fiber, additive, and tempering water, activation of tempering water with multifunctional additive and a part of cement is preliminarily performed in rotor-pulsation apparatus and thus produced mix is then agitated with dry mix obtained by consecutively introducing, into mixer, filler, the rest of cement, and steel fiber, said fiber being sand or sand and crushed stone and said steel fiber being obtained by milling slabs. EFFECT: prolonged service time and reduced production expenses due to enhanced compaction and stretching strength, frost resistance, and waterproofness, and also improved deformation behavior due to increased adhesion of steel fiber to concrete matrix. 8 cl, 1 tbl, 2 ex