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以粉煤灰代替３０％的水泥，在水胶比为０．３０、０．３３、０．３６及０．３９的情况下，分别试验了用水量及胶凝材料用量变化下混凝土的强度和渗透性。试验结果表明，与不掺粉煤灰的混凝土比较，掺粉煤灰混凝土的渗透性都明显降低，３０天龄期时最大可降低至５０．７％，７０天时可降低至２２．３％；为了获得较低的渗透性而采取较低的水胶比时，不掺粉煤灰的混凝土应用降低用水量的办法有利，掺粉煤灰的混凝土用提高总胶凝材料用量的办法更好
With fly ash instead of 30% cement, the strength of the concrete under varying water usage and the amount of cementitious material was tested at water-to-binder ratios of 0.30, 0.33, 0.36, and 0.39, respectively. Permeability. The test results show that compared with the concrete without fly ash, the permeability of the fly ash-removed concrete is significantly reduced, and it can be reduced to 50.7% at the 30-day age, and can be reduced to 22.3% at the 70-day age. In order to obtain lower permeability and lower water-to-rubber ratio, the method of reducing water consumption is better for concrete without fly ash, and the method for increasing the amount of total cementing material for concrete with fly ash is better.