Study Progress on Anti-washout Ability Performance Design and Characterization of Anti-washout Underwater Concrete

Anti-washout underwater concrete has been known as epoch-making concrete or new generation of underwater construction materials. But anti-washout underwater concrete made in China is still far behind foreign study results in terms of the anti-washout, slump and strength, etc. On the one hand, the main reason is that the development of anti-washout admixture and its performance evaluation method under the action of moving water is relatively backward. On the other hand, there is a big encumbrance in theory and technology about the adaptability between the concrete and its composition of materials. In this paper, the adaptability of anti-washout admixture and water reducing agent in anti-washout underwater concrete, anti-washout mechanism, the anti-washout ability, mix proportion design, and the evaluation index and test method of anti-washout ability were reviewed.The existing problems and the focus of future research were summaried and pointed out. It is expected that the achievements will have some guiding significance to the study and development of anti-washout admixture, the characterization of anti-washout ability and the construction of underwater concrete. © 2022, Materials Review Magazine. All right reserved.