1.Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete
在混凝土中用作矿物混合物的粉煤灰、原始或煅烧的天然火山灰技术规范
2.Classification and Froth Flotation of Fly Ash for Producing High-quality Pozzolan
采用分级和泡沫浮选从飞灰中生产高质量白榴火山灰