CAJ | 학술논문

采用循环伏安法和交流阻抗法系统研究了粉煤灰、矿渣粉和石灰石粉水泥浆体的电学特性，通过等效电路对电学测试结果进行拟合，并将拟合所得浆体电学参数与浆体化学结合水和压汞所测孔结构之间的相关性进行比较。结果表明：浆体的化学结合水与其电阻率具有较好的正相关性，即化学结合水越多，水化程度越大，浆体电阻率越高；粉煤灰和矿渣粉可以提高浆体电阻率，而石灰石粉在5％掺量下对浆体电阻率无影响；随着水化龄期的延长，浆体孔溶液电阻增大，其变化规律与浆体电阻率一致；浆体凝胶电容和凝胶电阻与C -S -H凝胶含量有关，二者有很好的负相关性；随着水化龄期的延长，浆体孔结构曲折程度提高，交流阻抗法所测得常相角指数减小，压汞测得的分形维数增大。
채용순배복안법화교류조항법계통연구료분매회、광사분화석회석분수니장체적전학특성，통과등효전로대전학측시결과진행의합，병장의합소득장체전학삼수여장체화학결합수화압홍소측공결구지간적상관성진행비교。결과표명：장체적화학결합수여기전조솔구유교호적정상관성，즉화학결합수월다，수화정도월대，장체전조솔월고；분매회화광사분가이제고장체전조솔，이석회석분재5％참량하대장체전조솔무영향；수착수화령기적연장，장체공용액전조증대，기변화규률여장체전조솔일치；장체응효전용화응효전조여C -S -H응효함량유관，이자유흔호적부상관성；수착수화령기적연장，장체공결구곡절정도제고，교류조항법소측득상상각지수감소，압홍측득적분형유수증대。
The electrical properties of fly ash ,slag and limestone powder-cement paste were studied by the methods of Cyclic Voltammetry and AC Impedance Spectroscopy .The results of electrical test were fitted by equivalent circuit . The correlations between electrical parameters of paste and unevaporable water content ,pore structure by mercury porosimetry were compared .The results show that there is a positive relation between the unevaporable water content and the electrical resistivity of paste .If the unevaporable water content is higher ,the hydration degree is higher and the electrical resistivity of paste is higher .The electrical resistivity of paste is increased with fly ash and slag ,and it is unaffected with limestone powder of 5% dosage .The resistance Rs of pore solution of paste is increased with the prolongation of hydration ,and the changes of resistance Rs and the electrical resistivity are unanimous .The resistance Rp and electrical capacitance C of gel are related to C -S-H content ,and there is a negative relation between the resistance Rp and electrical capacitance C of gel . The complexity of pore structure of paste is increased with the prolongation of hydration . T he constant phase angle exponent P by AC Impedance Spectroscopy is decreased and the value of fractal dimension by mercury porosimetry is increased .