Composites derived from gypsum are employed as artificial stone and in the cladding of interior building facades. The integration of mine waste in their production may lower manufacturing expenses, contingent upon the materials achieving satisfactory resistance and physical properties. The main objective of the present study is to assess the feasibility of waste travertine minerals for producing environmentally friendly gypsum-based composites. Gypsum composites with five replacement levels (10%, 20%, 30%, 40%, and 50%) of travertine waste powder, with specific particle size distribution, were prepared instead of gypsum. The physical properties (density, ultrasonic wave velocity, and moisture absorption capacity) and mechanical resistances (flexural and compressive strengths) of these samples were compared to a control sample (pure gypsum composite). The results obtained after 14 days indicate that despite a decreasing trend (%5≈) in density within the 0-50% range, up to 20%, this trend was increasing, demonstrating its effects on flexural strength (%9.1≈) and the reduction in the slopes of the curves of other physical and chemical properties. Based on the mechanical resistances obtained from this study, it can be concluded that up to 20% by mass of travertine mineral waste can be used in gypsum panels without changing their mechanical resistances significantly, with a slight increase in water absorption capacity (10%). Also, compared with the minimum standard values for compressive and flexural strengths (2 MPa), this increase can be extended to 50% by mass.
Samimi Namin, F. , Doostmohammadi, R. , Mousavi Qeydari, S. R. and Shahbazi, Z. (2025). Studying the effect of using travertine mine waste on the physical-mechanical properties of the two-component gypsum-based composite. AUT Journal of Civil Engineering, 9(1), -. doi: 10.22060/ajce.2025.23652.5893
MLA
Samimi Namin, F. , , Doostmohammadi, R. , , Mousavi Qeydari, S. R. , and Shahbazi, Z. . "Studying the effect of using travertine mine waste on the physical-mechanical properties of the two-component gypsum-based composite", AUT Journal of Civil Engineering, 9, 1, 2025, -. doi: 10.22060/ajce.2025.23652.5893
HARVARD
Samimi Namin, F., Doostmohammadi, R., Mousavi Qeydari, S. R., Shahbazi, Z. (2025). 'Studying the effect of using travertine mine waste on the physical-mechanical properties of the two-component gypsum-based composite', AUT Journal of Civil Engineering, 9(1), pp. -. doi: 10.22060/ajce.2025.23652.5893
CHICAGO
F. Samimi Namin , R. Doostmohammadi , S. R. Mousavi Qeydari and Z. Shahbazi, "Studying the effect of using travertine mine waste on the physical-mechanical properties of the two-component gypsum-based composite," AUT Journal of Civil Engineering, 9 1 (2025): -, doi: 10.22060/ajce.2025.23652.5893
VANCOUVER
Samimi Namin, F., Doostmohammadi, R., Mousavi Qeydari, S. R., Shahbazi, Z. Studying the effect of using travertine mine waste on the physical-mechanical properties of the two-component gypsum-based composite. AUT Journal of Civil Engineering, 2025; 9(1): -. doi: 10.22060/ajce.2025.23652.5893
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