基于Torrent法的混凝土渗透性研究

Study on Permeability of Concrete Based on Torrent Method

利用Torrent法研究了矿物掺合料、强度等级、含水率等因素对混凝土空气渗透系数的影响,并结合混凝土氯离子扩散系数和电通量的试验结果,分析了利用空气渗透系数来表征混凝土渗透性的可行性。试验结果表明,混凝土强度等级越高,密实度越好,空气渗透系数越小;空气渗透系数随混凝土含水率的降低而增大,变化呈现指数递增的关系;空气渗透系数与氯离子扩散系数和电通量有良好的相关性。

The influence of mineral admixture,strength grade,moisture content on concrete air permeability coefficient was studied by Torrent method.Combined with the experimental results of concrete chloride ion diffusion coefficient and electric flux of concrete,the feasibility of using Torrent method coefficient to characterize concrete permeability was analyzed.The results show that the higher the concrete strength grade,the better the compactness,and the air permeability coefficient is smaller.The air permeability coefficient increases with the decrease of water content of concrete,and the change shows a power exponential relationship.The air permeability coefficient has a good correlation with chloride diffusion coefficient and electric flux.