Characterization of Manmade and Recycled Cellulosic Fibers for Their Application in Building Materials

Števulová, Nadežda; Hospodárová, Viola; Estokova, Adriana; Singovszká, Eva; Holub, Marián; Demcak, Stefan; Briančin, Jaroslav; Geffert, Anton; Kačík, František; Václavík, Vojtěch; Dvorský, Tomáš

doi:10.32604/jrm.2019.07556

Cited by 6 publications

(9 citation statements)

References 47 publications

(62 reference statements)

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“…Their gray color corresponded to the remaining inks used in newspaper printing. The samples contained two inorganic substances, namely calcite and kaolinite, which are used as mineral fillers in the paper-making process [ 64 ]. The crystallinity index, one of the most significant crystalline structure parameters of the studied WPF samples, ranged 41–51%, and the lowest value was reached with sample C. The polymeric characteristics of the main component of cellulose, indicating the average polymer chain length (DP—degree of polymerization) and distribution of its molecular weights in the cellulose polymer (PDI—polydispersity index), are summarized in Table 3 .…”

Section: Methodsmentioning

confidence: 99%

“…PDI represents the ratio of the mass-average molecular mass (Mw)/number-average molecular mass (Mn). DP was calculated by dividing the molecular mass by the monomer equivalent mass of anhydroglucose [ 64 ]. DP is an important structural parameter that significantly influences the mechanical properties of cellulose.…”

Section: Methodsmentioning

confidence: 99%

“…DP is an important structural parameter that significantly influences the mechanical properties of cellulose. The characterization of the selected physical properties of the WPF samples (a more detailed description of the methods for determining these properties is in paper [64]) is given in Table 4. The morphology of the fibers is shown in Figure 1.…”

Section: Waste Paper Cellulose Fiber (Wpf)mentioning

confidence: 99%

“…Our research was devoted to the extensive investigation of the properties of multiple types of kraft wood pulp and recycled fibers from waste paper [ 63 , 64 ], as well as their implementation into cement mortars [ 55 , 65 , 66 , 67 , 68 , 69 , 70 ]. As the valorization of waste paper fibers in cement mortars has been relatively unexplored in current literature, a research emphasis was placed on the identification of a suitable type of cellulose fibers from the six samples of wood pulp and waste paper fibers for their use in cement fiber reinforced mortar.…”

Section: Introductionmentioning

confidence: 99%

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Recycled Cellulose Fiber Reinforced Plaster

et al. 2021

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This paper aims to develop recycled fiber reinforced cement plaster mortar with a good workability of fresh mixture, and insulation, mechanical and adhesive properties of the final hardened product for indoor application. The effect of the incorporation of different portions of three types of cellulose fibers from waste paper recycling into cement mortar (cement/sand ratio of 1:3) on its properties of workability, as well as other physical and mechanical parameters, was studied. The waste paper fiber (WPF) samples were characterized by their different cellulose contents, degree of polymerization, and residues from paper-making. The cement to waste paper fiber mass ratios (C/WPF) ranged from 500:1 to 3:1, and significantly influenced the consistency, bulk density, thermal conductivity, water absorption behavior, and compressive and flexural strength of the fiber-cement mortars. The workability tests of the fiber-cement mortars containing less than 2% WPF achieved optimal properties corresponding to plastic mortars (140–200 mm). The development of dry bulk density and thermal conductivity values of 28-day hardened fiber-cement mortars was favorable with a declining C/WPF ratio, while increasing the fiber content in cement mortars led to a worsening of the water absorption behavior and a lower mechanical performance of the mortars. These key findings were related to a higher porosity and weaker adhesion of fibers and cement particles at the matrix-fiber interface. The adhesion ability of fiber-cement plastering mortar based on WPF samples with the highest cellulose content as a fine filler and two types of mixed hydraulic binder (cement with finely ground granulated blast furnace slag and natural limestone) on commonly used substrates, such as brick and aerated concrete blocks, was also investigated. The adhesive strength testing of these hardened fiber-cement plaster mortars on both substrates revealed lime-cement mortar to be more suitable for fine plaster. The different behavior of fiber-cement containing finely ground slag manifested in a greater depth of the plaster layer failure, crack formation, and in greater damage to the cohesion between the substrate and mortar for the observed time.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Waste Paper Cellulose Fiber (Wpf)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recycled Cellulose Fiber Reinforced Plaster

et al. 2021

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“…Hence, there is a lack of studies on entirely or mainly bio-based alternatives. [6,[9][10][11][12][13] Alternatively, for sustainable insulation materials, many studies focus on entirely or mainly bio-based materials, where the use of natural and recycled fibres, agricultural waste composites, fungi composites, waste materials, etc. is investigated [6,[14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%