Results show that, as the chemical gypsum was used as retarder, the cement properties can meet the requirements of the national standard.
研究结果表明：用化工石膏作缓凝剂，水泥性能符合国家标准规定。
The influence of activator on strength and free linear dilatability and sulfate resistance of chemical waste gypsum - fly ash new road building material as well as action of water reducer are studied.
研究了激发剂对化工废石膏—粉煤灰新型道路建筑材料的强度和自由线膨胀率等性能的影响，以及减水剂的作用和新型道路建筑材料的抗硫酸盐侵蚀性能等。
Laboratory research work was introduced for the development of new cement by the use of industrial waste such as chemical waste gypsum, etc.
介绍了利用化工废石膏等工业废渣研制新型复合胶凝材料的实验室研究工作。
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