| 摘要 |
<p>There is disclosed a water-soluble, substantiallyhomogeneous, powder-like solid composition as an additive to concrete compositions containing expanded particles of polystyrene for maintaining the aqueous slurry in a homogeneous condition until it can cure to a solid, for entraining air in the binder phase, for inhibiting "flash setting" for maintaining for a period of time a "wet edge", and for improving the finish surface. The additive comprises a blend of anionic and nonionic surface active additives, liquid thermoplastic resin, poly (ethylene oxide) resin, lignosulfonate, and diatomaceous earth.</p> |
