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.
结果表明：掺入粉煤灰对混凝土的孔隙率及强度均有较大影响。
Results: indicate that addition of fly ash has great influence to concrete porosity and strength.
碳化减少碳化区和未碳化区孔径和孔隙率的同时也影响混凝土质量、强度和碱度等其它性能。
Carbonation reduces the pore size distribution and porosity of carbonated and non-carbonated part, and affects the concrete weight, strength, alkalinity et al.
结果表明，石灰-粉煤灰混凝土抗碳化性能较差的主要原因是其水化生成物碱度较低、水泥石孔隙率较高。
It is shown by the results that the main reason for the lower carbonation resistance of LFA concrete is caused by a combination of lower basicity and higher porosity.
本文采用该方法研究了水灰比、粉煤灰、硅灰等对混凝土孔隙率的影响。
Based on this, the influence of water to cement ratio, fly ash and silica fume on porosity of concrete are studied.
对于由轻量化骨料或者高孔隙率骨料(见as 1012.4.3标准)配制而成的混凝土，则不建议采用。
It is not recommended for use with concretes made with lightweight aggregates, or aggregates of high porosity (see AS 1012.4.3).
经无损检测和钻孔取芯检测，碾压沥青混凝土心墙的容重、孔隙率和渗透系数均满足设计要求。
Nondestructive detection and core sample detection show that the unit weight, porosity and permeability of the core are in accord with the design requirement.
根据透水混凝土的结构特征，对其配制参数和配合比计算方法进行了研究，提出了以总孔隙率为第一设计参数，抗压强度为第二参数的配合比设计方法。
A mix proportion design method of pervious concrete is provided, of which total void ratio is the first design parameter and compressive strength is the second one.
混凝土孔隙率可通过饱水混凝土试件在特定条件下的失水率(可蒸发水含量)间接测定。
Porosity of concrete can be obtained indirectly by testing the loss percentage of water content of evaporative water of saturated specimen on the certain condition.
首先，根据混凝土的试验结果给出了水泥石有效孔隙率与总孔隙率关系的经验公式。
First, an empirical relationship formula between the effective porosity and total porosity of cement paste is given based on the experimental results of concrete.
首先，根据混凝土的试验结果给出了水泥石有效孔隙率与总孔隙率关系的经验公式。
First, an empirical relationship formula between the effective porosity and total porosity of cement paste is given based on the experimental results of concrete.
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