Ultrasonic characterization of ceramic fibres at ambient and elevated temperatures
β Scribed by Eric A. Lindgren; M. Rosen; Kamal E. Amin
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 804 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0041-624X
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Experimental data relating to standard rates of loading are studied on concrete control specimens 28 days after casting. Normal concrete with an oven-dry density in the range 2000-2800 kg/m3 is used for the specimens. The rates of compression are about 0.3 N/mm\*/sec, or a strain rate of about 30 x
Raman spectra of Mg(CIO,),-NaNCS-H,O mixtures were analysed as a function of the concentration ratio of the components at ambient and elevated temperatures. The strong perturbation of the thiocyanate spectrum observed in the regions of the v, and v3 vibrations is interpreted in terms of complex form