The effect of coarse aggregate gradation on the pore features and mechanical property of porous ecological concrete is t......

　　In order to nondestructive test the permeability coefficient of hot mix asphalt(HMA) pavements fast, A methodology f......

在基坑深井井点降水工程中，经常利用经验值确定渗透系数，设计降水工程方案，但往往与实际情况不符，可在施工现场利用降水井做抽水试验，重......