Effects of pre-treatment of rattan (Laccosperma secundiflorum) on the hydration of Portland cement and the development of a new compatibility index

Use of tree pruning wastes for manufacturing of wood reinforced cement composites

“…The differences in the compatibility of these species under untreated conditions without chemical additives can be attributed to the differences in one or more of the chemical parameters of these materials (Table 4), especially the cold-and hot-water solubility. These results are consistent with the results of research conducted in other parts of the world [32,42,43], and they indicated that none of the evaluated species could be used directly as raw materials for WRCC production; thus, pre-treatment with either cold or hot water and the addition of either CaCl 2 or MgCl 2 (3% by cement weight), is required. Table 6 shows the hydration parameters and the calculated indices of optimal treatments selected to manufacture of WRCCs.…”

“…The suitability of these species has been classified according to the extent to which they retarded cement hydration at a maximum temperature (T max ), compatibility factor (C A ) and inhibitory index (I) according to [28e30]. A number of researchers have conducted a series of tests to enhance the compatibility of wood and cement by using pretreatments [31,32] and chemical additives [23,30].…”

Effect of wood particle geometry and pre-treatments on the strength and sorption properties of cement-bonded particle boards

“…Although, the incorporation of large particles has been found to impact greater flexural properties in wood-cement composites, poor interfacial bonding occurring between large particles and cement often results in low strength properties (Adefisan, 2013) and affects composite durability (Kerade et al, 2003). The effect of different pretreatments on the properties of wood composites has also been investigated (Badejo, 1988 andOlorunnisola, 2008). The objective of this study was to determine the effect of different particle geometry and pretreatments on the strength and sorption properties of wood cement composite boards.…”

Investigation of the internal structure of flax fibre cell walls by transmission electron microscopy

“…In the construction field, research is underway to the association of plant fibers to cementitious materials, like cementitious composites with glass fibers. However, the biochemical composition of these fibers delays the setting, their hydrophilic character affects the hydration of the cement and the workability of the mixture is unsuitable for many applications (Juarez et al 2007;Olorunnisola 2008;Pacheco-Torgal and Jalali 2011;Sawsen et al 2014Sawsen et al , 2015 However, the mechanical properties of the fibres present a significant variability when they are exposed to UV or water and decrease between 10 and 30 % (Le Duigou et al 2015;Thuault et al 2013a;Yan et al 2015). Thus, flax fibre has the potential to be used as reinforcement for construction and building composite materials if this variability is taken into account.…”