The results of mortar test show that the retention rates of compressive strength of the cement mortar at 28 d increase to above 80.1% from 60.1% for the commonly used type Hongxing-I high alkali accelerator.

• 且水泥砂浆的28d强度保留率显著提高，由现用的高碱速凝剂红星I型的60.；1%25提高至80