结果表明：RPC具有非常低的孔隙率，其气体渗透系数比传统混凝土的低1 ~ 2个数量级。
Results indicate that RPC possesses very low porosity and its air permeability is lower by 1-2 magnitudes than that of conventional concrete.
认识到溶解度的气体是更大的，在液体状态，比在固体状态下，受焊缝孔隙率是相关的熔合区的讨论。
Recognizing that the solubility of gas is greater in the liquid state than in the solid state, the subject of weld porosity is relevant to fusion zone discussion.
采用自制装置分别测定了孔径分布、平均孔径、孔隙率和气体通量。
The pore size distribution, the average pore size, the porosity and the gas flux were determined.
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