Affiliation:
1. Chinese Academy of Sciences and Ministry of Water Conservancy
2. Kunming University of Science and Technology
3. Beijing University of Civil Engineering and Architecture
Abstract
The article presents an study on the rheological properties of cement grouts with different water-cement ratios of 0.5,0.55,0.6,0.65,0.7,0.75,0.8,0.9,1.0,1.1,1.25,1.0,2.0,5.0 and10.0.It was to investigate different water-cement ratios of cement grouts effecting its flow pattern properties, and thus determinate the conversion point of them among Newtonian fluid, Bingham fluid and Power-law fluid. It confirmed that,when take into accounts of all negative factors possibly affecting the experiment, including asynchronous loading steps, water temperature, apparatus deflection and so on, W/C(water-cement ratio) = 0.75 is a inflection point,which Power-law fluid converted into Bingham fluid, while at W/C =1.25 the cement grouts suffered a conversion from Newtonian fluid to Bingham fluid. This research results supplied, improved and expanded the knowledge of the flow pattern properties of cement grouts and conversion condition with different water-cement ratios, and so it has important theory meaning and realistic value and may contributes to the engineering practices.
Publisher
Trans Tech Publications, Ltd.
Reference6 articles.
1. Zenit R, Koch D L, Sangani A S. Measurement of the average properties of a suspension of bubbles rising in a vertical channel:J. Fluid Mech, Vol. 31(2001), p.429.
2. Guoji Wang. Grouting theory and practice(China University of Mining and Technology Press, Beijing 2000), in Chinese.
3. Zhe Hao. Grouting theory and application of rock mass(Geological Press, Beijing 2006).
4. Houjin Xiong. Geotechnical engineering chemistry( Science Press, Beijing 2001), in Chinese.
5. Kepeng Hou, Xiao-lei Yang. Slurry rheology and its measure: Test Technology and Testing Machine, Vol. 42(2002), pp.18-20, in Chinese.