通过普通水工混凝土的抗压强度和渗透性试验,对混凝土的相对渗透系数、氯离子扩散系数和气体扩散系数及孔隙率随不同水灰比的变化规律进行了研究。结果表明:普通水工混凝土的抗压强度或水灰比与各种渗透性之间的关系并不是简单的线性关系;这些渗透性之间可以线性关系转换计算,并可用于既有水工混凝土的耐久性评价。
This paper presents the experiment results of compressive strength and permeability of ordinary hydraulic concrete, and studies the variations of relative permeability coefficient, chlorion diffusion coefficient, gas diffusion coefficient and porosity with water-to-cement ratio. Results show that the relationships between all kinds of concrete permeability and compressive strengths or water-to-cement ratios are not simple linear, but linear transformation among all kinds of concrete permeability can be used for assessing durability of the ordinary hydraulic concretes presently studied.