引气剂对水工混凝土性能影响的试验研究

Experimental Study on Influence of Air Entraining Agent on Hydraulic Concrete Performance

测试了3种引气剂硬化混凝土的含气量、气泡平均半径、气泡间隔系数,探讨了气泡参数对掺引气剂水工混凝土抗压强度、抗冻性能的影响。试验结果表明:气泡平均半径对引气混凝土抗压强度的影响较大,混凝土抗压强度随气泡平均半径的增大而降低;气泡间距系数、气泡平均直径对引气混凝土抗冻性的影响更为显著。

Air content,air void spacing factor and air void average radius in hardened concrete with 3 kinds of air entraining agents are tested and influence of air void parameters on compressive strength and frost resistance of concrete with air entraining agents are studied in this paper. The test results show that air void average radius influences compressive strength of air-entrained concrete greatly and concrete compressive strength is decreased with increase of air void average radius; Air void spacing factors and air void average diameters influence concrete frost resistance more significantly.