The Method to Test the Homogeneity of Concrete

Li Liu; Wen Yang

doi:10.4028/www.scientific.net/KEM.633.485

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 633The Method to Test the Homogeneity of Concrete

The Method to Test the Homogeneity of Concrete

Abstract:

As the ultra high way and long distance pumping concrete became increasingly common, the engineers not only required the concrete have large liquidity but also increasingly concerned about the homogeneity of concrete. However, without effective and convincing method, currently the engineers had to assess and judge the homogeneity just by their sight, feel and experience. In order to test the homogeneity rapidly, exactly and quantitatively, a new device and method was developed relaying on the theory that the barycentre of the concrete which was filled in regular-shape container would deflect away from the shape-centre of the container more or less if the components with different density in concrete separated to stratifications. C30 and C40 concrete whose slump≥180mm and slump flow≥480mm were tested by this method and their homogeneity modulus (C_v) were figured out by the supporting formula. The result showed that the homogeneity of concrete was accredited if 0.90<C_v<1.10, and C_v was closer to 1.00, the homogeneity was better.

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Periodical:

Key Engineering Materials (Volume 633)

Pages:

485-489

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.633.485

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Online since:

November 2014

Authors:

Li Liu*, Wen Yang

Keywords:

Concrete, Homogeneity, Test Method

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