Dispersion and stabilization of ceramic powders in the presence of wood fibers treated with an anionic surfactant adjuvant: sodium laureth sulfate

Wood nanofibers from munwiserie waste have been used as a partial replacement of cement for cement paste at a content of up to 0.5% by weight of cement. The effect of the nanofibrillated cellulose content on the porosity, the compressive strength and the degree of hydration of the cement was investigated. Results have shown an improvement in the compressive strength by more than 40% with 4% of added fiber cellulose. The chemical modification of nanofibers wood by grafting of chains alkyls in their surfaces can reduce the quantity of water absorbed by the sample. The addition of an anionic additive: Sodium Laureth Sulfate (SLS) in the water of mixing improves of more the surface of samples by minimizing the size of pores by emulsion effect, from where the absorption of water reduces. The alkaline treatment of fibers before being injected in the dough of cement has a very remarkable effect on the mechanical behavior of composites. The degree of hydration of the cement has increased with the cellulose content containing nanofibrils. The analyze revealed that the presence of nanofibrillated cellulose favored the hydration of the cement by producing more calcium silicate gel and portlandite, probably the main reason for this improvement in compressive strength.