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| 摘要: |
| 用作混凝土掺合料的粉煤灰的性能指标可用电化学方法进行研究，交流阻抗谱参数电荷传递电阻Rct和高频电容CHF，可分别反映粉煤灰的火山灰活性和需水量比的特征，实验结果表明：Rct与28d抗压强度值具有很好的线性相关性；CHF与粉煤灰的需水量比之间可啮合成1条四次多项式曲线。 |
| 关键词: 粉煤灰 火山灰活性 需水量比 交流阻抗谱 |
| DOI： |
| 分类号:TU528 |
| 基金项目:上海市粉煤灰综合利用科研开发基金资助项目，上海市重点学科建设资助项目 |
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| Electrochemical Study of Pozzolanic Activity and Water Requirement Ratio of Fly Ash |
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HE Hong zhu SHI Mei lun CHEN Zhi yuan
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| Abstract: |
| Quality of fly ash used as admixture of concrete can be evaluated by electrochemical technique. The charge transfer resistance R ct and the HF capacitance C HF represent the characteristic of pozzolanic activity and water requirement ratio of fly ash. Testing result shows that there is linear correlation between the charge transfer resistance R ct and the compressive strength for 28 days, while the HF capacitance C HF and water requirement ratio of fly ash have the relation that can be represented by fourth power polynomial. |
| Key words: fly ash,pozzolanic activity,water requirement ratio,AC impedance spectroscopy, |
