硅酸盐通报2024，Vol.43Issue(1)：35-43,9.
基于电化学阻抗谱的石灰石粉硬化水泥浆体孔结构演化研究
Pore Structure Evolution of Limestone Powder Hardened Cement Slurry Based on Electrochemical Impedance Spectroscopy
摘要
Abstract
In order to study the pore structure evolution behavior of the hardened cement slurry with high-dosage(mass fraction above 20％)limestone powder,based on electrochemical impedance spectroscopy(EIS)and mercury porosimetry(MIP)test analysis,the influence of high-dosage limestone powder on the EIS topological structure and pore structure parameters of the hardened cement slurry were explored.The microstructural equivalent circuit of hardened cement slurry with high-dosage limestone powder was established,and the relationship between components in the equivalent circuit and pore structure parameters was studied.The results show that the effect of limestone powder content on the EIS topological parameters of Bode angle and θmax is significant with the increase of hydration age,and the pore size distribution of the hardened cement slurry with high-dosage limestone powder content is roughly evolved from large pores and capillary pores to transition pores and gel pores.In addition,the resistance of EIS equivalent circuit decreases with the increase of capillary pore content in hardened cement slurry,and the capacitance decreases with the increase of gel pore content in hardened cement slurry.关键词
石灰石粉/硬化水泥浆体/孔结构/电化学阻抗谱/等效电路Key words
limestone powder/hardened cement slurry/pore structure/electrochemical impedance spectroscopy/equivalent circuit分类
化学化工引用本文复制引用
朱鹏飞,徐宁,余熠,石研然,杨恒,何旸,徐菲,蒋林华,储洪强,徐天磊..基于电化学阻抗谱的石灰石粉硬化水泥浆体孔结构演化研究[J].硅酸盐通报,2024,43(1):35-43,9.基金项目
中央级公益性科研院所基本科研业务费专项资金(Y422007,Y420017,Y422001) （Y422007,Y420017,Y422001）
