Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Characterization of Portland cement concrete microstructure using the scanning acoustic microscope
The scanning acoustic microscope has been applied to investigate several aspects of Portland cement concrete microstructure. This method uses ultrasound to image the local impedance at each point of a material. The impedance image highlights microstructural features that are difficult to observe with other imaging techniques. The topics investigated so far include the influence of aggregate composition on the development of the cement paste-aggregate interface, the nature of interfacial transition zone, and ettringite formation. Several types of gels have been observed, and these can be classified by their characteristic impedance values. Future work includes quantification of impedance values by first arrival times and the identification of Portland cement concrete phases by ultrasonic impedance spectroscopy.
Characterization of Portland cement concrete microstructure using the scanning acoustic microscope
The scanning acoustic microscope has been applied to investigate several aspects of Portland cement concrete microstructure. This method uses ultrasound to image the local impedance at each point of a material. The impedance image highlights microstructural features that are difficult to observe with other imaging techniques. The topics investigated so far include the influence of aggregate composition on the development of the cement paste-aggregate interface, the nature of interfacial transition zone, and ettringite formation. Several types of gels have been observed, and these can be classified by their characteristic impedance values. Future work includes quantification of impedance values by first arrival times and the identification of Portland cement concrete phases by ultrasonic impedance spectroscopy.
Characterization of Portland cement concrete microstructure using the scanning acoustic microscope
Livingston, R.A. (Autor:in) / Manghnani, M. (Autor:in) / Prasad, M. (Autor:in)
1999
5 Seiten, 7 Quellen
Aufsatz (Konferenz)
Englisch
Characterization of Portland cement concrete microstructure using the scanning acoustic microscope
| British Library Conference Proceedings | 1999
Characterization of Portland cement concrete microstructure using the scanning acoustic microscope
| British Library Online Contents | 1999
| British Library Online Contents | 1994