Influence of hydroxypropyl methylcellulose on the mechanical properties of cement mortar reinforced by sawdust

This study explores the incorporation of Hydroxypropyl Methylcellulose (HPMC) and sawdust into cement mortar, focusing on their effects on the setting time and mechanical properties, such as compressive and flexural strengths. Various formulations were prepared by adding different proportions of HPMC (1% and 2%) and sawdust (2%) to a standard cement mortar mix. The setting time was assessed using the Vicat apparatus, while the compressive and flexural strengths were evaluated at 7, 14, 21, and 28 days of curing. Results showed that the addition of HPMC significantly improved the mortar's performance by reducing the setting time and enhancing both compressive and flexural strengths. At 28 days of curing, the mortar with 2% HPMC and 2% sawdust exhibited a compressive strength of 32.4 MPa and a flexural strength of 5.6 MPa, compared to the control sample, which had a compressive strength of 28.1 MPa and a flexural strength of 4.2 MPa. These findings suggest that incorporating HPMC and sawdust can be an effective way to improve the strength and sustainability of cement-based materials.