A Review on Hybrid Inorganic–Polymer Analog Nanocomposites Incorporating Pozzolanic Wastes and nano-Additives

The recent progress of polymer matrix nanocomposites (PMNCs) reveals that the performance of
matrix and filler is at the core of matrix–filler interaction, interfacial bonding, and well-controlled
distribution of nanoscale reinforcements. Applying these concepts, we consider inorganic particulate
systems as hybrid nanocomposites, in which a discontinuous inorganic matrix is effectively reinforced
via synergistic co-incorporation of pozzolanic wastes and nano-additives. In the composite system
described above, silica-, alumina-rich pozzolanic materials serve as reactive precursors to form
binding phases, and nano-additives, such as nano-silica, behave as high surface area fillers, enhancing
interfacial engineering and microstructural modification [1]. The mechanisms behind are addressed
through structure–property relationships, focusing on C–S–H and C–A–S–H gel formation as matrix
forming Phases analogous to polymer matrices. Nano-additives play a role in providing nucleation
sites, increasing the rate of reactions, and improving interfacial transition zones (ITZ), and thus
enhancing the efficiency of transferring the stress through the phases. The resulting dual system is
reminiscent of polymer nanocomposites, where reduced porosity and improved particles packing is
related to enhanced mechanical and durability properties. This review focuses on recent advances in
via a polymer and composite materials scientist's point of view, establishing correspondences in
interphase behavior, dispersion control, and load transfer mechanisms. The inclusion of sustainable
pozzolanic wastes further renders these systems as green composites. In general, this study provides a
common platform that connects inorganic particulate systems with polymer nanocomposite science,
facilitating their categorization as new-generation hybrid composite materials with tailorable
properties and wide engineering applications.