• rheology as a tool in concrete science: the use of rheographs and workability boxes

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     rheology can supply valuable and practical information regarding the properties of fresh concrete, how to reach an optimization of the product and how to attain it by the use of rheograph. otherwise, the optimization is largely based on feeling. the rheograph reveals in a systematical way the effects of diverse changes on the rheological behavior of the cement based suspension and thus is a convenient and essential tool to compare different concrete types and examine the behavior relative to changed quantities of constituents. effects of many admixtures as well as the basic constituents of fresh concrete have been revealed in rheographs. in principle the effect of two or more constituents can be added in a rheograph to estimate the combined effect, which constitutes a so-called vectorized-rheograph approach.

    different applications and types of concrete like slipform, underwater, and high strength, are described by workability boxes. new rheograph with boxes for various types of self compacting concrete is proposed.

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