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| Cement Mortar Liquidity Testing Method by Rheological Properties |
| ZHENG Shao-peng1,2, TIAN Bo1, WANG Da-peng1, HOU Zi-yi2 |
1. Research Institute of Highway, Ministry of Transport, Beijing 100088, China;
2. School of Civil Engineering, Hebei University of Technology, Tianjin 300401, China |
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Abstract A cement mortar mixer that can test torque is designed to realize online observation of working performance of the cement mortar and to predict cement mortar slump. The influence of different rotating speeds and mixing timeson cement mortar quality is analyzed using factors of slump and torque. The best stirring speed is determined to be 180 r/min and the best mixing time 60-180 s. The relation between cement mortar slump and torque at different shear rates is studied, and different power functionsfor different shear rates are found. At a given shear rate, i.e., a rotation speed of 180 r/min, the relation between slump and torque is set up, which could provide a test method and theoretical basis for cement mortar online quality control and slump forecast.
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Received: 19 March 2013
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| Fund:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.2011318223710) |
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Corresponding Authors:
ZHENG Shao-peng, zsp060324@163.com
E-mail: zsp060324@163.com
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2013, Vol. 7 
