ArticleMaterials (Basel, Switzerland)2026
Influence of Expanded Polystyrene on the Mechanical and Tribological Performance of Alkali-Activated Lignocellulosic Ash Composites.
Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Lignocellulosic waste materials (LWM), such as wood ash (WA) and sugarcane bagasse ash (SCBA), have emerged as promising alkali-activated precursors. In this study, WA- and SCBA-based matrices were modified with metakaolin (MK) and volcanic ash (VA) as complementary reactive precursors, while recycled expanded polystyrene (EPS) was incorporated as a lightweight modifier. Composites were prepared using a 15 M NaOH activator and characterized by compressive strength, Vickers hardness, and ball-on-disc tribological tests under dry sliding conditions to establish the relationship among precursor composition, mechanical behavior, and surface performance. SCBA-based composites exhibited higher compressive strength than WA-based systems, reaching 4.47 MPa in SCBA-VA formulations, whereas the hybrid WA-SCBA-VA formulation achieved the highest compressive strength (7.55 ± 0.25 MPa,
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