粉煤灰掺量对混凝土碳化过程的影响试验研究

Experimental study on the influence of fly ash content on the carbonation process of concrete

混凝土碳化会影响到混凝土建筑物的耐久性,粉煤灰掺量对混凝土碳化的影响对其合理使用有显著影响。开展了6组18个不同粉煤灰掺量的试件,研究粉煤灰的掺量变化对混凝土碳化程度的影响,结果表明:随着粉煤灰掺量的增大,抗碳化能力变得越弱;在碳化过程中,掺入粉煤灰的混凝土碳化速度随着时间逐渐减小;10%粉煤灰掺量与无粉煤灰掺量的混凝土,它们的碳化程度接近,表明少量掺加粉煤灰对碳化程度影响较小。

Concrete carbonization will affect the durability of concrete buildings,and the influence of fly ash content on concretecarbonization has a significant impact on its rational use.In this paper,6 groups of 18 specimens with different fly ash contentswere carried out to study the influence of fly ash content changes on concrete carbonation degree.During the carbonization process,the carbonation rate of concrete mixed with fly ash decreases with time.The carbonation degree of concrete with 10% fly ash con-tent is close to that of concrete without fly ash content,which indicates that a small amount of fly ash has little influence on the car-bonation degree.