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    Characteristics of a consolidating industry

    This procedure, which is readily used today, relies on the use of the Abram’s cone (Figure 1).

    The cone is filled in one layer without rodding and the diameter, instead of the slump of the concrete sample, is measured after the cone has been lifted .

    ASTM Committee C09 on Concrete and Concrete Aggregates has begun work toward developing standards for self-consolidating concrete.

    Martin Vachon describes how a special type of concrete self-consolidates without the use of vibration, its market share around the world, and the work of C09 in writing standards for it.

    They provide indication on the static and dynamic segregation resistance of an SCC as well as its ability to flow through reinforcements.

    They are frequently used in the field as acceptance test methods.

    Most of the work still has to be completed, but with over 40 participants, this team should be able to do it in a timely fashion Several tests have already been developed worldwide to characterize the performance of a fresh self-consolidating concrete.

    A few of them are briefly presented in the following paragraphs.

    characteristics of a consolidating industry-78characteristics of a consolidating industry-50

    The first paper on SCC was presented at the second East-Asia and Pacific Conference on Structural Engineering and Construction (EASEC-2) in 1989, followed by another presentation at an Energy Diversification Research Laboratories (CANMET)/American Concrete Institute (ACI) meeting in 1992.

    This test is mostly used for evaluating the SCC’s self-compactibility as it mainly relates to its yield stress.) simulate the casting process by forcing an SCC sample to flow through obstacles under a static pressure.

    The final height H and H2/H1 for the U-box and the L-box respectively are recorded.

    Self-consolidating concrete (SCC) or self-compacting concrete, as it’s sometimes known, arrived as a revolution in the field of concrete technology.

    The concept was proposed by Professor Hajime Okamura of Kochi University of Technology, Japan, in 1986 as a solution to the growing durability concerns of the Japanese government.

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