Effects of Carbonation on the Microstructure of Cement Materials: Influence of Measuring Methods and of Types of Cement

被引：0
作者：
Son Tung Pham
William Prince
机构：
[1] National Institute of Applied Sciences,Laboratory of Civil Engineering and Mechanical Engineering
来源：
International Journal of Concrete Structures and Materials | 2014年 / 8卷
关键词：
nitrogen adsorption; water adsorption; carbonation; specific surface BET; pore size distribution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The objective of this work was to examine the influence of carbonation on the microstructure of cement materials. Different materials, which were CEM I mortar and paste, CEM II mortar and paste, were carbonated at 20 °C, 65 % relative humidity and 20 % of CO2 concentration. The specific surface area and pore size distribution were determined from two methods: nitrogen adsorption and water adsorption. The results showed that: (1) nitrogen adsorption and water adsorption do not cover the same porous domains and thus, we observed conflicts in the results obtained by these two techniques; (2) the CEM II based materials seemed to be more sensible to a creation of mesoporosity after carbonation than the CEM I based materials. The results of this study also helped to explain why observations in the literature diverge greatly on the influence of carbonation on specific surface area.
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页码：327 / 333
页数：6
相关论文
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