Microstructural mechanisms of gum arabic-stabilized red clay binder for hemp shive building composites
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Brzyski Przemysław, Panek Rafał, Slaný Michal, Matejdes Marián |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 129 |
| Numer artykułu: | 116781 |
| Strony: | 1 - 25 |
| Impact Factor: | 8,1 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | This research was funded by the Polish Ministry of Science and Higher Education within the grant numbers FD-20/IL-4/009, FD-20/IL-4/999 and FD-20/IL-4/038. This work was supported by the Slovak Research and Development Agency under the Contract no. APVV-24-0133. The authors also acknowledge the financial support of this research by the project Slovak Grant Agency VEGA (Grant 1/0278/25). Michal Slaný gratefully acknowledges the financial support provided by the project funded by the EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under project No. 09I03–03-V04–00140. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 1 lipca 2026 |
| Abstrakty: | angielski |
| This study investigates gum arabic as a stabilizer for red clay binder intended for building composites containing hemp shives. Binder samples were used to identify microstructural mechanisms, whereas hemp-clay (HC) composites were used to assess the application relevance of the modified binder. Blends with 1, 3, and 5 wt% GA were examined by compositional, structural, and surface analyses. GA contained more than 80% saccharide fractions, consistent with high hydrophilicity. XRD indicated amorphous GA and shives with a broad feature near 2θ ≈ 20°. XPS and FTIR showed carboxyl and hydroxyl groups as dominant; increasing GA raised the signatures of these groups in the clay/GA blends without introducing new chemistries, consistent with stronger hydrogen bonding. SEM showed a continuous biopolymer film that bridges and binds clay particles and yields denser microstructures. MIP analysis showed a decrease in clay porosity and an increase in average pore size with increasing GA content. Increasing the GA amount to 3 wt% increased the micro/meso pore volume without affecting their size. GA at 5 wt% decreased the micro/meso pore volume and slightly increased their size. Surface roughness and confocal microscopy indicated a more homogeneous and compact texture due to improved workability of the mixtures and wettability of GA. Using GA in the HC building composite increased the comparative compressive strength, determined as stress at 5% strain, by 70% at a dosage of 5 wt%. The results indicate that hydrogen bonding, film formation, physical reconstruction, and stabilization of the pore structure are key mechanisms of clay-GA interaction. These mechanisms may improve the performance of non-load-bearing, minimally processed clay-based building products intended for protected external wall layers, such as hemp–clay infill or unfired insulating blocks. |
