EXPERIMENTAL STUDY AND QUANTITATIVE CHARACTERIZATION OF EFFECTIVE POROSITY IN CEMENT-BASED COMPOSITE MATERIALS

Sun Guowen; Sun Wei; Jiang Jinyang; Wang Caihui

doi:10.13204/j.gyjz201011024

Volume 40 Issue 11

May 2015

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Sun Guowen, Sun Wei, Jiang Jinyang, Wang Caihui. EXPERIMENTAL STUDY AND QUANTITATIVE CHARACTERIZATION OF EFFECTIVE POROSITY IN CEMENT-BASED COMPOSITE MATERIALS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 98-101. doi: 10.13204/j.gyjz201011024

Citation:

Sun Guowen, Sun Wei, Jiang Jinyang, Wang Caihui. EXPERIMENTAL STUDY AND QUANTITATIVE CHARACTERIZATION OF EFFECTIVE POROSITY IN CEMENT-BASED COMPOSITE MATERIALS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 98-101. doi: 10.13204/j.gyjz201011024

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EXPERIMENTAL STUDY AND QUANTITATIVE CHARACTERIZATION OF EFFECTIVE POROSITY IN CEMENT-BASED COMPOSITE MATERIALS

doi: 10.13204/j.gyjz201011024

1.
Jiangsu Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China

Received Date: 2010-07-15
Publish Date: 2010-11-20

Abstract

Abstract

The method of the second intrusion mercury in MIP is used to investigate the pore characteristics of hardened cement paste with water to cement ratio(w /c) 0.23,0.35 and 0.53 respectively,in order to research the quantitative relationship between transport properties and pore characteristics in cement-based composite materials.The results show the second intrusion mercury could well determine the effective pore characteristics,and effective porosity accounts for 25% to 50% of total porosity in cement paste.At the same time,The existence of the first and second peak in the MIP pore size distribution curves is confirmed,such as,the first peak in hardened cement paste with water to cement ratio 0.53 is very distinct,however,with the decrease of water to cement ratio,the first peak gradually disappears.The pore diameter corresponding to the first and second peak is critical pore diameter of capillary pore and gel pore,respectively.The first peak value of hardened cement paste with w /c 0.23,0.35 and 0.53,respectively,is 0.053,0.062 and 0.077 m.
- cement-based composite materials,
- mercury intrusion porosimetry (MIP),
- second intrusion mercury,
- pore characteristics,
- effective porosity

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References(7)

References

刘培生,马晓明.多孔材料检测方法[M].北京:冶金工业出版社,2006.

[2] Guang Ye,Hu J,Breugel K Van,et al.Characterization of theDevelopment of Microstructure and Porosity of Cement-BasedMaterial By Numerical Simulation and ESEM Image Analysis[J].Materials and Structures,2002,35(10):603-613.

[3] Rakesh Kumara,Bhattacharjee B.Assessment of PermeationQuality of Concrete Through Mercury Intrusion Porosimetry[J].Cement and Concrete Research,2004,34(2) 321:328.

[4] Han Young Moon,Hong Sam Kim.Relationship Between AveragePore Diameter and Chloride Diffusivity in Various Concretes[J].Construction and Building Materials,2006,20(9): 725-732.

[5] Sabine Car.Influence of Aggregates on Chloride DiffusionCoefficient Into Mortar[J].Cement and Concrete Research [J].2003,33 (7):1021-1028.

[6] Guang Ye.Percolation of Capillary Pores in Hardening CementPastes[J].Cement and Concrete Research,2005,35 (1):167 －176.

[7] Cook R A,Hover K C.Mercury Porosimetry of Hardened CementPastes[J].Cement and Concrete Research,1999,29 (6):933 －943.

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