Investigation of PAT for advanced sulphoaluminate MDF cement

Investigation of PAT for advanced sulphoaluminate MDF cement

The method of examining micro-pores in sulphoaluminate MDF cement by means of the Positron Annihilation Technique (PAT) was discussed. The results show that the intensity I^sub 2^ of positrons annihilation with moderate life-span (τ^sub 2^[asymptotically =]330Ps) increases regularly with the additio...

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Veröffentlicht in:Journal of Wuhan University of Technology. Materials science edition 2005-03, Vol.20 (1), p.104-105
Hauptverfasser: Congyun, Huang, Runzhang, Yuan, Shizong, Long
Format: Artikel
Sprache:eng
Schlagworte:
Macro-defect-free cements
Positron annihilation
Positrons
Studies
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Zusammenfassung:The method of examining micro-pores in sulphoaluminate MDF cement by means of the Positron Annihilation Technique (PAT) was discussed. The results show that the intensity I^sub 2^ of positrons annihilation with moderate life-span (τ^sub 2^[asymptotically =]330Ps) increases regularly with the addition of the numbers of micro-pores (less than 250Å). Therefore, the value of I^sub 2^ may be used to opitomize the compactness and integrity of the MDF cement structure. At the same time, the experiment result of PAT was compared with that of Mercury Intrusion Porosimeter (MIP).[PUBLICATION ABSTRACT]
ISSN:1000-2413
1993-0437
DOI:10.1007/BF02870887