摘   要：对比了不同气压下混凝土引气剂的引气性能，研究了掺加不同减水组分、引气组分、生物胶和缓凝组分的混凝土在低压和常压下的可泵性。结果表明，高海拔下，大气压降低，混凝土引气效果变差，含气量降低，可泵性劣化。适当的引气剂引气可以改善混凝土的可泵性，但要考虑引气剂在低气压下的作用效果。结合共玉高速高海拔情况开发的高原型泵送剂，可泵性良好，力学性能优良，保证了高海拔下泵送混凝土的施工质量。

Abstract: Compared with the entraining performance of air entraining agent at low pressure, the pumpability of concrete adding superplasticizer, air-entraining agent, retarding composition and biological glue at normal atmospheric pressure and low pressure were studied. The results showed that with high altitude, atmospheric pressure decreasing, the air entraining agent effect deteriorated, concrete air content decreased, and the pumpability deteriorated. Appropriate air bubbles are the significant measure to improve the concrete pumpability, but the effect of air-entraining agent at low pressure should be taken into. Combined the high altitude conditions of GoonYu highway, the plateau type pumping agent with excellent pumpbility and mechanical properties is developed, which can ensure the construction quality of concrete pumping at high altitude.