Reply to the discussion by S. Diamond of the paper “Effect of drying on cement-based materials pore structure as identified by mercury intrusion porosimetry: a comparative study between oven-, vacuum- and freeze-drying”

2003 ◽  
Vol 33 (1) ◽  
pp. 171-172 ◽  
Author(s):  
C Gallé
Keyword(s):  
Comparative Study ◽  
Pore Structure ◽  
Freeze Drying ◽  
Mercury Intrusion Porosimetry ◽  
Mercury Intrusion ◽  
Cement Based Materials

Study on the Influence of Air-Entraining Agent on the Impermeability of Cement-Based Composites Based on its Pore Structure by Fractal Theory

2010 ◽  
Vol 168-170 ◽  
pp. 615-618
Author(s):  
Zhi Qin Du ◽  
Wei Sun
Keyword(s):  
Fractal Dimension ◽  
Pore Structure ◽  
Mercury Intrusion Porosimetry ◽  
Fractal Theory ◽  
Mercury Intrusion ◽  
Pore Structures ◽  
Cement Based Materials

The effect of different quantity of air-entraining agent on the impermeability of cement-based materials are studied in this paper. Impermeability test and mercury intrusion porosimetry (MIP) method were used to characterize the impermeability and pore structures. The fractal dimension is used to describe the characteristic of pore structure and calculated by the data of MIP experiment. The result shows that owing to the improvement of pore structure, the impermeability performance of the cement-based composites is noticeably enhanced when air-entraining agent is added with appropriate quantity.

Influences of Ground Limestone Fineness on the Properties of Cement-Based Materials

2012 ◽  
Vol 517 ◽  
pp. 403-410
Author(s):  
Jia Xiao ◽  
Bao Guo Ma ◽  
Rong Zhen Dong ◽  
Cai Yun Xu
Keyword(s):  
Pore Structure ◽  
Mercury Intrusion Porosimetry ◽  
Cement Mortar ◽  
Hardened Cement ◽  
Cement Pastes ◽  
Mercury Intrusion ◽  
Setting Times ◽  
Cement Based Materials ◽  
Hardened Cement Pastes ◽  
Ground Limestone

The effect of ground limestone fineness on the properties and mechanism of cement-based composite materials was investigated. The setting times, fluidity and strength of cement mortar were measured. In order to identify the mechanism effect of ground limestone fineness on the microstructure of the hardened cement pastes, microstructure analyses such as calorimetry analysis and Mercury Intrusion Porosimetry (MIP) were also performed. Experimental results indicated that the setting times are shortened, and the fluidity and strength of cement mortar are improved with the ground limestone fineness increases. The increase of the ground limestone fineness can effectively inhibit the pore structure of hardened paste, which due to mortar and paste samples incorporating replacement levels of ground limestone, and improve the pore structure of hardened paste.

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