Self consolidating concrete spread test

08-Oct-2019 11:21

During his research, Okamura found that the main cause of the poor durability performances of Japanese concrete in structures was the inadequate consolidation of the concrete in the casting operations.By developing concrete that self-consolidates, he eliminated the main cause for the poor durability performance of their concrete.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 .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.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.

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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.The dimensions may vary from one country to the other.

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