Pore Structure Analysis on Hardened Paste of CaO-Al2O3-P2O5 Cement

Xiao Dong Wang; Zhu Ding; Bi Qin Dong; Ming Zhang

doi:10.4028/www.scientific.net/KEM.591.44

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 591Pore Structure Analysis on Hardened Paste of...

Pore Structure Analysis on Hardened Paste of CaO-Al₂O₃-P₂O₅ Cement

Abstract:

CaO-Al₂O₃-P₂O₅cementitious material (PAC) is a type of new developed hydraulic cement, which has excellent cementitious performance and mechanical property. In cement based materials, the pore structure of hardened cement paste has a significant effect on their performance, such like strength, permeability and durability. In the current paper, pore structure parameters of hardened PAC paste samples in five different curing stages were measured respectively by MIP (Mercury Intrusion Porosimetry). The pore fractal features (pore volume, pore area, porosity) were investigated with fractal theory. Results showed that the porosity of hardened PAC paste does not exactly decline with elongation of curing age and increase of compression strength. The PAC pastes pore structures have typical fractal nature which changes with curing age and pore diameter distribution. The fractal feather of hardened PAC paste can be effectively understood by using porosity fractal dimension.

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Periodical:

Key Engineering Materials (Volume 591)

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44-49

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.591.44

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Online since:

November 2013

Authors:

Xiao Dong Wang, Zhu Ding, Bi Qin Dong, Ming Zhang

Keywords:

Fractal Dimension, Mercury Intrusion Porosimetry, Pore Structure, Porosity Fractal Dimension, Volume Fractal Dimension

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