The model of a factor that fly ash effects on carbonation resistance was found, effect of fly ash on the air infiltration coefficient is analyzed.

建立了单一粉煤灰影响因子模型，分析了粉煤灰掺量对混凝土空气渗透系数的影响。

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Compared with the traditional air purification filter core, the utility model has the advantages of appropriate wind-resistance coefficient, stable efficiency, light weight, low cost, and so on.

与传统的空气净化滤芯相比，本实用新型提供的滤芯具有合适的风阻系数及稳定的效能且质量小、成本低等优点。

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