期刊
CEMENT AND CONCRETE RESEARCH
卷 35, 期 5, 页码 823-830出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2004.08.019
关键词
rheology; cement paste; physical properties; marsh cone
The present study is concerned with the Marsh cone, a workability test used for specification and quality control of cement pastes and grouts. It is demonstrated here that, under several consistency and geometry conditions, the flow time reflecting fluidity may be calculated from the plastic viscosity and yield stress in the case of a Bingham fluid and from the cone geometry. A relation between the behaviour parameters and the flow time of fresh pastes tested is derived and experimentally validated. A practical application of these results is suggested. Lastly, the concept of a new test apparatus based on two cones is presented and tested on a single cement paste. (c) 2004 Elsevier Ltd. All rights reserved.
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