Preparation and evaluation of the influence of modified fiber flour wood on the properties of the fresh condition of cement-based mortars

Authors

• Aloulou Fadhel ¹
• Alila Sabrine * ²

1. LabEM-LR11ES34-Laboratory of Energy and Materials, University of Sousse, Sousse, Tunisia
2. LMSE-Laboratoire Sciences DES Matériaux Et Environnement, University of Sfax, Sfax, Tunisia

Abstract

Wood fibers were used as fillers in the partial cement matrix by replacing the cement to a content of 1% by weight of cement. The effect of wood fibers on porosity and compressive strength has been studied. The results obtained show an improvement in the compressive strength of more than 40% with 1% by weight of wood fibers. The addition of wood fibers shows a good pore reduction, and the best result was obtained with the emulsion of a mixture incorporating 1% by weight of wood fibers in the presence of an anionic surfactant (SDBS). The degree of hydration of the cement increases with the wood fibers. This property was confirmed by Fourier transform infrared spectroscopy. These analyzes revealed that the presence of wood fibers generates and promotes the hydration of the cement, producing more calcium silicate gel and portlandite, which affects the compressive strength which gives a strong improvement.

Keywords

• Degree of cement hydration
• Fiber
• Mechanical properties
• Microstructural properties
• Portland cement composite
• Wood