摘要
通过化学成分、X射线衍射、红外光谱、力学性能以及结合水测定等方法研究了粉煤灰蒸压制品的性能,分析了粉煤灰红外光谱在1 100 cm-1附近强吸收区的Si—O伸缩振动频率与粉煤灰的蒸压活性及其强度间的关系。研究结果表明,不同粉煤灰该频率存在差异,且与蒸压条件下粉煤灰的蒸压活性存在明显对应关系,即粉煤灰红外光谱中该Si—O伸缩振动频率越低,其蒸压活性越强,制品的强度越高。
The reactivity of autoclaved materials is estimated conventionally by their chemical composition. In this paper, after determining the chemical composition of various types of fly ash, a series of new tests which included X-ray Diffraction （XRD）, infrared spectral analysis （IR） and bound water testing, were applied to investigate the performance of autoclaved fly ash samples. The relationship between the infrared spectral analysis of Si-O wavenumber （about 1 100 cm^-1） of difficult fly ash and their autoclaved chemical reactivity and their compressive strength of its autoclaved samples was analyzed. The result shows that fly ash with a lower wavenumber has stronger autoclaved chemical reactivity and higher compressive strength for its autoclaved samples.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第7期35-39,共5页
Journal of Wuhan University of Technology
基金
湖北省自然科学基金(2007ABA330)
湖北省教育厅重点项目(D200712005)
关键词
粉煤灰
蒸压活性
红外光谱
Si-O伸缩振动
fly ash
autoclaved reactivity
infrared spectra
Si-O stretching vibration
