Multi-Scale Investigation of Fly Ash Aggregates (FAAs) in Concrete: From Macroscopic Physical-Mechanical Properties to Microscopic Structure of Hydration Products.

Water Absorption As illustrated in Figure 2 , the water absorption capacity of fly ash-based autoclaved aerated aggregates (FAAs) exhibits a decreasing trend at both 1 h and 24 h intervals with the augmentation of cement content.

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