论文部分内容阅读
水泥基材料中的可溶性组分可在去离子水的作用下发生溶解,使得材料细观结构等发生改变,进而影响其耐久性。通过室内试验,研究不同矿渣掺量的水泥基材料在去离子水作用下接触性溶蚀特征。通过拟合,得出各周期内电导率值及最大值,并预测不同时刻各类试件侵蚀溶液的矿化度;再通过建立电导率和Ca~(2+)浓度关系,预测未来周期内Ca~(2+)浓度溶出量。结合电导率、侵蚀液的矿化度及Ca~(2+)浓度变化的数学方程,揭示了在水固比较低条件下,矿渣含量越高的水泥基试件,其抗表面接触性溶蚀越强的规律。
Soluble components in cement-based materials can dissolve under the action of deionized water, which can change the mesostructure of materials and affect their durability. Through laboratory tests, the contact corrosion characteristics of cement-based materials with different slag content in deionized water were studied. Through the fitting, the conductivity value and the maximum value in each cycle can be obtained, and the salinity of the erosion solution at different time can be predicted. By establishing the relationship between the conductivity and Ca 2+ concentration, Ca ~ (2+) concentration of the dissolution. Combined with the conductivity, the salinity of the eroded solution and the mathematical equation of Ca2 + concentration, the cement-based test piece with higher slag content is revealed under the condition of low water-solid ratio, the anti-surface contact corrosion Strong law.