| 摘要 |
<p>This present invention refers to a plasticizing agent for concrete and building mortars. The plasticizing agent comprises thermally modified lignosulfonate and a water-consistent non-ionic high-molecular organo-silicon surface active agent. Thermally modified lignosulfonates are characterised by the absence of reducing saccharides in their composition.The water-consistent non-ionic high-molecular organo-silicon surface active agents are aqueous emulsions of polyalkydsiloxanes with a molecular weight of 1-20 kDa. The composition in question is characterised by its easy preparation and high stability (resistance to desintegration). Other advantages of the plasticizing agent of the present invention are its high plasticizing capacity, low air entraining, high strength characteristics of concrete and building mortars.</p> |
