With the development of modern building structures towards high-rise and large-span directions, C80 and above high-grade concrete has gradually become the core material for super high-rise buildings, large-span bridges, and marine engineering due to its excellent mechanical properties and durability.
However, the characteristics of high dosage of cementitious materials and low water cement ratio (usually ≤ 0.
30) lead to a significant increase in the viscosity of concrete, causing construction problems such as high pumping resistance, difficulty in compacting, and susceptibility to honeycomb and rough surfaces, which seriously restrict its engineering application effect.
Especially in complex structural construction, high viscosity concrete is prone to pipe blockage, delamination, and even affects structural homogeneity and long-term durability, becoming a bottleneck restricting the development of high-strength concrete technology.
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