Investigation of compressive strength and flexural behavior of dissreinforced cementitious mortar: Experimental study, statistical analysis and optimization
Year: 2025
Type: article
Abstract: The current study uses an experimental approach combined with statistical analysis to investigate the effect of incorporating Diss fibers on the mechanical behavior of cementitious mortars. The primary goal of this research is to investigate and optimize the effects of various factors on the compressive strength and flexural behavior of cementitious composites reinforced with Diss fibers. These variables include fiber percentage, fiber length, sodium hydroxide (NaOH) solution concentration, and immersion time. Using a Box-Behnken design of experiments (L27), samples of composites consisting of diss plant fibers and a cement matrix were prepared in accordance with a reference mortar. The 30-day evaluation period included measurements of compressive strength, flexural strength, and dynamic modulus of elasticity. The results showed that incorporating a lower percentage of diss fiber resulted in an improvement in mechanical properties. Regression models were developed for all responses using the Response Surface Methodology, and the influence of each parameter on the models was determined using ANOVA analysis. Using a combined approach of RSM and the desirability function, optimal values (1% diss fiber, 10 mm length, 3% NaOH concentration, and 60 minutes of immersion time) were determined. These optimal values agreed well with the experimental results, with differences in compressive strength of 0.65%, flexural strength of 0.00%, and dynamic elastic modulus of -0.43%.
Institutions: University of Guelma, Centre Universitaire de Mila
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4409919367