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三轴柔壁常水头渗透仪常用来测定渗透系数为0.001~10 cm/s的透水性波特兰水泥混凝土(PCC)的渗透性。室内试样选用3种不同级配的压碎石灰石和2种不同级配的砾石,采用相应的透水性PCC设计,在6种不同的压实效果下得到。现场试样可以通过在工地上进行钻芯取样得到,通过对现场和室内透水性PCC试样的有效空隙率和常水头渗透性进行测定比较,得出了一些有意义的结论。
Three-axis soft-wall constant head permeameters are commonly used to determine the permeability of water-permeable Portland cement concrete (PCC) with a permeability coefficient of 0.001 to 10 cm / s. Three different grades of Crushed Limestone and two Grades of different grading were used in the indoor samples, which were obtained with the corresponding water-permeable PCC design under 6 different compaction effects. Field samples can be obtained by drilling core samples on the site. Some meaningful conclusions are drawn by comparing the effective void fraction and the constant head permeability of PCC samples both on site and in the laboratory.