Contribution to the Study of Concrete Segregation

International Conference on Structural and Civil Engineering Research

June 06-07, 2019 | Paris, France

A Grini and A Benouis

University of Constantine 3, ALGERIA University of GUELMA, ALGERIA

Posters & Accepted Abstracts: JET

Abstract

Segregation is the unintentional separation of the fresh components of concrete or mortar, which can be caused by bad proportioning, insufficient mixing, or excessive vibration. Segregation can have negative impacts on the mechanical, transport, and durability properties of the cured product. While there are several tests that can measure concrete at the beginning of hardening or in its fully hardened state, these are generally based on the percentage of the coarse aggregates between the top and the bottom of the samples. Consequently, the results do not provide a full description of the state of the material or a basis for its long-term performance. To begin to address this deficit, this paper investigates the potential of using ultrasonic pulse velocity (UPV) as a means to identify and characterize segregation in traditional and self-compacting concrete (SCC), which is known to be particularly prone to segregation, because of its high fluidity level.

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