The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
The results show that the degreeof hydration of fly ash-cement paste is higher and the porosity is lower than pure Portland cement paste in late ages.
结果表明，与纯硅酸盐水泥相比，粉煤灰水泥水化后期的水化程度较高，浆体总孔隙率较低。
3
Based on the core and logging data, this paper analyses and evaluates density of seams, opening degree, porosity, permeability and seam spacing in the Tazhong area.