中文摘要：

内养护技术可以显著改善混凝土的性能。试验利用超吸水聚合物对混凝土进行内养护，研究了混凝土的抗冻性能。试验结果表明，不论是单掺超吸水聚合物还是超吸水聚合物与粉煤灰复掺，均可改善混凝土的抗冻性，250次冻融循环后混凝土抗压强度较空白混凝土少损失4％～8％。

英文摘要：

Internal curing is especially beneficial to improve concrete performance. Internal curing of concrete is carried out by using the super absorbent polymer, and the frost resistance of concrete is studied. The results indicate that whether the super absorbent polymer （SAP） or double mixed with SAP and fly ash, can improve the frost resistance of concrete and its strength loss after 250 freezethaw cycles is 4%-8% lower than the blank sample.