Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2001.03a
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- Pages.445-452
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- 2001
A Study on the Variation of Physical Properties by the Water to Cement Ratio and the Mixing Speed for Grout Materials
그라우트재의 물시멘트비 및 혼합속도에 의한 물성변화에 관한 연구
Abstract
Generally, OPC(ordinary portland cement) is used for grouting in Korea, and bentonite has usually been added to prevent the deposition of cement particles. The dispersion of CB(cement bentonite) grout is influenced by variable factors i.e. water to cement ratio, particle size of cement, kind of bentonite, adding volume, methods of adding, viscosity of CB grout materials and curdling time. Among variable factors, the viscosity of CB grout materials is influenced by the dispersion, and dispersion is improved as increasing the mixing speed. In this paper, described a suitable mixing speed of the High Speed Mixer in field, engineering characteristics of CB grout materials vary with the water to cement ratio and the mixing speed as well as confirming the state of dispersion.
Keywords
- Bentonite;
- Cement bentonite grout materials;
- Ratio of water to cement;
- mixing Speed;
- High speed mixer;
- Viscosity;
- Dispersion