MEASUREMENT OF ADVANCING AND RECEDING CONTACT ANGLES BETWEEN MERCURY AND CEMENT-BASED MATERIALS
The selection of the incorrect value of contact angles is one of the important error sourcesin calculating the pore size in mercury porosimetry studies. However, from literature, it isdifficult to find out an appropriate technique, which can be used to measure both advancingand receding contact angles. In this paper, a new method is proposed to measure theadvancing and receding contact angles between mercury and cement-based materials. Thismethod is demonstrated with a measurement on Portland cement paste with the water-to-cement ratio of 0.3. This method can give very consistent results with the standard deviationlower than 1％. The measured advancing and receding contact angles range from 131.7° to138.6° and from 123.3° to 128.2°, respectively, as curing age increases from 3 days to 28days.
Jian Zhou Guang Ye E.Schlangen K.van Breugel
Microlab,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Delft,the Nethe Microlab,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Delft,the Nethe
国际会议
南京
英文
1399-1403
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）