聚丙烯酰胺对钢渣混凝土性能的影响

Effect of polyacrylamide on properties of steel slag concrete

研究了聚丙烯酰胺(PAM)掺量对钢渣混凝土工作性、力学性能和抗碳化性能的影响,并进行了XRD分析。结果表明:掺入适量钢渣微粉会使混凝土的流动度下降,凝结时间延长,28 d的抗压、抗折强度下降,抗碳化性能提高;随着PAM掺量的增加,钢渣混凝土的流动度先增大后减小,凝结时间延长,28 d抗折强度先增大后减小,28 d抗压强度减小,碳化深度先减小后增大。

The effects of the content of polyacrylamide(PAM)on the workability,mechanical properties,and carbonation resistance of steel slag concrete were studied,and the XRD analysis was conducted.The results show that adding an appropriate content of steel slag powder can reduce the fluidity of concrete,prolong the setting time,decrease the 28 d compressive and flexural strength,and improve the carbonization resistance.With the increase of PAM content,the fluidity of steel slag concrete first increases and then decreases,the setting time prolongs,the 28 d flexural strength first increases and then decreases,the 28 d compressive strength decreases,and the carbonization depth first decreases and then increases.