COMPLEX CONCRETE ADDITIVE Russian patent published in 2004 - IPC

FIELD: manufacture of building materials. SUBSTANCE: invention relates to using complex plasticizing additive for concretes in manufacture of concrete mixes and mortars for manufacturing building structures. Lignosulfonate-based additive is made in the form of granules and contains 5-25% bitumen, 15-35% cellulose fiber (structure-forming agent), and 1-10% water. Additive may advantageously contain 5-15% aluminosilicate and/or 15-25% superplasticizer. EFFECT: enabled in situ introduction of additive into concrete, increased plasticity of concrete during prolonged period of time, and reduced expenses on constituents. 2 cl, 2 tbl