利用高钙粉煤灰中f -CaO的潜在膨胀能 ,制备节能利废型混凝土膨胀剂。高钙粉煤灰与S -激发剂复合制成混凝土膨胀剂后 ,可直接配制膨胀混凝土。与市售的UEA膨胀剂相比 ,配制性能相当的膨胀混凝土时 ,掺该膨胀剂的混凝土成本显著低于掺UEA者。 Using the potential expansion energy of f-CaO in high-calcium fly ash, an energy-saving and waste-type concrete expander was prepared. High calcium fly ash and S - activator compound made of concrete expansion agent, can be directly prepared expansive concrete. Compared with the commercially available UEA expansive agent, the cost of the concrete admixed with the expansive agent was significantly lower than that of the UEA admixed with the expansive concrete with comparable performance.