Influence of gum arabic admixture on selected properties of clay mortar
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Brzyski Przemysław |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2024 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 451 |
| Numer artykułu: | 138865 |
| Strony: | 1 - 13 |
| Impact Factor: | 7,4 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | This research was funded by Polish Ministry of Science and Higher Education within the grant number FD-20/IL-4/009. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Clay mortars are characterized by low mechanical strength and lack of resistance to water. Due to these weaknesses, the possibilities of their use in construction are limited. It is possible to modify the composition of the mortar to improve some properties, but it may adversely affect other important properties. One of the possible directions of research is the modification of the mortar with an admixture of biopolymers of natural origin. In this study, the scientific goal was to check the influence of the admixture of gum arabic (GA) in various amounts (1 %, 2 %, 3 % of the clay weight) on selected physical and mechanical properties of the clay mortar. Consistency, drying shrinkage, drying kinetics, pore size distribution (MIP), water resistance, flexural and compressive strength, and Young's modulus were examined. In addition, SEM microscopic analysis was performed. The admixture of gum arabic significantly increased the flexural strength (by 81.8–150 %) and compressive strength (by 84–170 %) in relation to the reference mortar. The strength increased with the increase in the amount of GA. The biopolymer reduced total porosity by 10.4–12 % and also reduced the average pore size by 11.9–18.1 %. A positive effect of the mortar modification was the improvement in water resistance. The weight loss of GA samples after 7 minutes of soaking in water was lower by about 52–79 % compared to the reference mortar. With the increase in the polysaccharide content, the water resistance of the mortar increased. The GA admixture did not significantly affect the consistency of the mortar. The shrinkage of the modified mortars did not exceed 1.3 %. The beneficial effect of using gum arabic can be extended to the use of clay mortar, e.g. as external plaster, mortar in load-bearing walls or as a mixture for making unfired bricks. The test results may be an inspiration for further studies regarding, for example, sorption and vapor permeability. |
