基于正交试验的透水混凝土强度和透水性影响研究

Research on the Influence of Permeable Concrete Strength and Permeability Based on Orthogonal Experiment

为探究透水混凝土强度和透水性能受掺合料及砂率的影响规律,文章采用正交试验方法,研究了不同硅灰、矿粉、粉煤灰掺量和砂率对透水混凝土强度和透水系数的影响。结果显示,透水系数随砂率的增加而逐渐降低,随硅灰、矿粉和粉煤灰掺量的增大呈先上升后下降的变化规律;28 d抗压强度随粉煤灰掺量和砂率的增大呈先上升后下降的变化特征,随硅灰、矿粉掺量的增大而提高。

In order to explore the influence of admixture and sand ratio on the strength and permeability of permeable concrete,the orthogonal experiment method is used to study the influence of different amount of silica fume,mineral powder,fly ash content and sand ratio on the strength and permeability coefficient of permeable concrete.The results show that the permeability coefficient gradually decreases with the increase of sand ratio,and increases first and then decreases with the increase of silica fume,mineral powder and fly ash content.The 28 d compressive strength increases first and then decreases with the increase of fly ash content and sand ratio,and increases with the increase of silica fume and mineral powder content.