Stabilization and Evaluation of Modified Nanofiber Flour Wood on the Properties of Cement-Baszd Mortar

Abstract

The influence of nanofiberwood on the properties of the fresh condition of cement based mortars is not known in detail, despite recent advances in nanocellulose technology and it is related composite materials. Nanofiber wood from industrial waste, produced by high-pressure homogenization, was used as cement partial replacement for cement paste at a content ranging from 0% to 2% by weight of cement. The effect of the nanofiber wood 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 50% with 1% of added fiber wood. 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 (SDBS) 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 degree of hydration of the cement has increased with the cellulose content containing nanofibrils. The analyze revealed that the presence of nanofiber wood favored the hydration of the cement by producing more calcium silicate gel and portlandite, probably the main reason for this improvement in compressive strength.

Effect of organoclay and wood fiber inclusion on the mechanical properties and thermal conductivity of cement-based mortars

“…It shows that the presence of SDBS in compositebased cement increased the compressive strength from 9.81 MPa to 11.47 MPa. About 14.47% improvement can be explained by the adhesion and the collision of fibers in the matrix in the presence of the SDBS [21].…”

“…Ordinary Portland cement (OPC NF P 15-301) was used in all the cement formulation. More information about the chemical composition of OPC [21] is presented in Table 1.…”

Nanomaterials in Cementitious Composites: An Update

“…Figure 6 shows a transmission electron microscope image of CNFs in an aqueous solution [ 85 ]. All of the studies report that the addition of CNFs improve the degree of hydration [ 86 , 87 , 88 , 89 , 90 ]. CNF can increase both the flexural and compressive strength, possibly because of a higher degree of hydration and densification in the cement paste microstructure, but they lower the workability [ 91 , 92 , 93 , 94 , 95 ].…”

Nanofiber Cellulose Grafted with Lauric Acid as a New Phase Change Material (PCM) used in Buildings for Thermal Energy Storage

“…Thus composites based on cellulose or its derivatives, or other polysaccharides have been investigated [14][15][16][17]. Modified cellulose nanofiber or its derivatives can be an innovative solution for manufacturing high added value biomaterials, especially in the thermal insulation industry [18][19][20].…”

“…It's important to mention that natural fibers have grown to develop environmental-friendly construction materials. These fibers are biodegradable, lighter and abundant resources like sisal, Flax, Hemp, Bamboo, coir and others [19,23].…”