Traditional concrete material research has long relied on “trial and error” experimental mix proportions and empirical formula calculations.
Researchers gradually approach the optimal performance solution through limited cementitious material combinations, water cement ratios, aggregate gradation, and curing system schemes, supplemented by mechanical testing and microscopic characterization.
However, as a typical multiphase heterogeneous composite, the hydration process of concrete involves multi-step chemical reaction of cement water admixture, complex microstructure evolution of interface transition zone (ITZ), and multi-scale coupling effect from nanoscale C-S-H gel to macro aggregate skeleton.
In addition, the introduction of industrial solid waste (such as fly ash, slag, silica fume, etc.
) and recycled aggregates has led to a rapid expansion of the spatial dimension of mix proportion parameters – traditional methods are like searching for a needle in a haystack, which is not only time-consuming and laborious, but also difficult to capture the collaborative optimization potential hidden in nonlinear interaction relationships.
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