A state-of-the-art review on the stability of self-consolidating concrete

The stability of self-consolidating concrete (SCC) is not only the key performance controlling the workability, but also has an important impact on its mechanics and durability in the later period. However, numerous problems still exist in the study of stability. The study on the mechanism of static stability does not fully consider the interaction among aggregates, the accuracy of the existing multi-aggregate settlement models is still questioned. The reports on the mechanism of dynamic stability of SCC during agitation, pumping, casting and vibration, etc. are still limited. The existing evaluation methods of stability are difficult to give accurate and useful information of field conditions and there is no generally accepted evaluation method and a standard evaluation system. The relative significance of the mix proportion parameters and external disturbances on stability is not clear and the key factors controlling the stability have not been concluded. In order to have a comprehensive and in-depth understanding of stability, the research progress of mechanism, evaluation methods and influence factors of stability has been reviewed in this paper. (C) 2020 Elsevier Ltd. All rights reserved.