Dry Effect of Cementitious Materials on Testing Results of X-Ray CT

Jian De Han; Wei Sun; Gang Hua Pan

doi:10.4028/www.scientific.net/AMR.450-451.187

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 450-451Dry Effect of Cementitious Materials on Testing...

Dry Effect of Cementitious Materials on Testing Results of X-Ray CT

Abstract:

In this study three-dimensional X-ray computed tomography (X-ray CT) is used to investigate the testing results differences of cement paste and mortar before and after drying. It can be found that the mean gray values of paste and mortar before drying are bigger than after drying, and the impact of drying on cement paste is more serious than mortar. In addition, the porosity of non-drying cement paste and mortar is 1.10% and 0.43%, while that of drying cement paste and mortar is 1.55% and 0.70%, respectively. So, the porosity of paste and mortar markedly increases after drying process. The numbers of pores of paste and mortar sharply increase after drying process in particular between 0.01mm3 and 0.1mm3. The impact of drying on smaller pores is more serious than bigger pores.

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Periodical:

Advanced Materials Research (Volumes 450-451)

Pages:

187-192

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.450-451.187

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Online since:

January 2012

Authors:

Jian De Han, Wei Sun, Gang Hua Pan

Keywords:

Cementitious Material, Drying, Gray Values, Porosity, X-Ray CT

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