Investigation of PAT for advanced sulphoaluminate MDF cement

Huang Congyun; Yuan Runzhang; Long Shizong

doi:10.1007/BF02870887

Journal of Wuhan University of Technology Materials Science Edition ›› 2005, Vol. 20 ›› Issue (1) : 104 -105. DOI: 10.1007/BF02870887

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Investigation of PAT for advanced sulphoaluminate MDF cement

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Abstract

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 I₂ of positrons annihilation with moderate life-span (τ₂≈330Ps) increases regularly with the addition of the numbers of micro-pores (less than 250Å). Therefore, the value of I₂ 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).

Keywords

sulphoaluminate MDF cement / PAT / MIP / polyvinyl alcohol

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Huang Congyun, Yuan Runzhang, Long Shizong. Investigation of PAT for advanced sulphoaluminate MDF cement. Journal of Wuhan University of Technology Materials Science Edition, 2005, 20(1): 104-105 DOI:10.1007/BF02870887

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References

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