本文根据我国混凝土膨胀剂使用中存在的问题,提出如何正确使用膨胀剂的意见。作者根据《混凝土外加剂应用技术规范》GB50119-2003有关条文,提出必须从膨胀剂质量的选择,确立以限制膨胀率为目标的补偿收缩混凝土配合比设计方法,改善结构设计中的合理配筋和加强施工管理等方面措施,才能使混凝土膨胀剂应用能较好地解决建筑结构的裂渗控制问题。 Based on the existing problems in the use of concrete expanders in our country, this paper puts forward some suggestions on how to use expansive agents correctly. According to the relevant provisions of GB50119-2003, the author puts forward that we must establish the design method of shrinkage-compensated concrete mix ratio with the aim of limiting the expansion rate from the choice of expansive agent quality and improve the reasonable reinforcement in structural design Strengthen construction management and other measures, can the application of concrete expansive agent can better solve the cracking control of building structure.