Bio-Fibres as a Reinforcement of Gypsum Composites

Fantilli, Alessandro Pasquale; Jóźwiak–Niedźwiedzka, Daria; Denis, Piotr

doi:10.3390/ma14174830

Cited by 24 publications

(12 citation statements)

References 21 publications

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“…This caused a reduction in the compressive strength of the composite which is in line with the previous studies. Compressive strength results of other studies about hemp fiber-reinforced gypsum plaster composite change from 5 MPa to 10 MPa which agree with previous results same as our study [12,[47][48][49]. However, the fiber-reinforced composite did not break into pieces during the test as it was compressed.…”

Section: Mechanical Characterization Of Compositessupporting

confidence: 91%

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Thermal and mechanical evaluation of natural fibers reinforced gypsum plaster composite

et al. 2023

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Many problems such as the increase in the world population, global drought, and greenhouse gases have caused materials used in industries to be reconsidered. This is how the concept of green composite material emerged. Using natural fibers to obtain such materials is important in terms of sustainability. This study is aimed to use hemp fiber and banana fiber as natural fiber additives in the gypsum composite to produce green bio-composite. Natural fibers are chemically modified with 5% NaOH solution. In this way, a good fiber/matrix interface interaction is provided. The composite hardness test result of 5 wt% HB fiber added sample is obtained as 50.4. Compared to the control plaster sample test result, which is 53.6, a slight decrease can be seen. However, it is observed that the fibers held the structure together and sopped the crack propagation. The increase in the porous structure with fiber addition caused a decrease in the thermal conductivity of the composite. Comparing thermal conductivity result of 5 wt% HB fiber reinforced gypsum composite (0.131 W⸳mK-1) with respect to pure gypsum result (0.237 W⸳mK-1), it gave a promising result as an insulation material.

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Section: Mechanical Characterization Of Compositessupporting

confidence: 91%

“…Therefore, the tendency for eco-friendly construction materials is increased [10]. Natural fiber can be used as an additive material in construction materials like cement, concrete [11], gypsum plaster [12], and lime [13]. Eco-friendly materials play an important role in the market of building materials.…”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical evaluation of natural fibers reinforced gypsum plaster composite

et al. 2023

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“…Their research demonstrated that the composite containing 5% wool and clay exhibited the lowest thermal conductivity and transmittance, indicating superior thermal insulation properties. The effect of sheep wool and hemp fibers on the mechanical properties of gypsum-based composites was studied by Fantilli et al [ 21 ]. They found that the addition of sheep wool and hemp fibers reduced the compressive and flexural strengths by approximately 20% compared to plain gypsum.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Physical Properties of Polymer Composites Filled with Sheep Wool

Vasina,

Straznicky,

Hrbacek

et al. 2024

Polymers

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Sheep farmers are currently facing an oversupply of wool and a lack of willing buyers. Due to low prices, sheep wool is often either dumped, burned, or sent to landfills, which are unsustainable and environmentally unfriendly practices. One potential solution is the utilization of sheep wool fibers in polymer composites. This paper focuses on the study of mechanical vibration damping properties, sound absorption, light transmission, electrical conductivity of epoxy (EP), polyurethane (PU), and polyester (PES) resins, each filled with three different concentrations of sheep wool (i.e., 0%, 3%, and 5% by weight). It can be concluded that the sheep wool content in the polymer composites significantly influenced their physical properties. The impact of light transmission through the tested sheep wool fiber-filled polymer composites on the quality of daylight in a reference room was also mathematically simulated using Wdls 5.0 software.

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“…To tailor the initial setting time and bolster the mechanical strength of gypsum materials, significant research has focused on their modification, such as the incorporation of organic polymers and inorganic additives into gypsum systems [8][9][10][11][12][13]. Yu et al notably enhanced the toughness and strength of composites by integrating organic and inorganic units at a molecular scale into an inorganic base [14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterisation of Hemihydrate Gypsum–Polyacrylamide Composite: A Novel Inorganic/Organic Cementitious Material

Chen,

Mi,

Yang

et al. 2024

Materials

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This study combined inorganic α-hemihydrate gypsum (α-HHG) with organic polyacrylamide (PAM) hydrogel to create a novel α-HHG/PAM composite material. Through this facile composite strategy, this fabricated material exhibited a significantly longer initial setting time and higher mechanical strength compared to α-HHG. The effects of the addition amount and the concentration of PAM precursor solution on the flowability of the α-HHG/PAM composite material slurry, initial setting time, and mechanical properties of the hardened specimens were investigated. The structural characteristics of the composite material were examined using XRD, FE-SEM, and TGA. The results showed that the initial setting time of the α-HHG/PAM composite material was 25.7 min, which is an extension of 127.43% compared to that of α-HHG. The flexural strength and compressive strength of the oven-dried specimens were 23.4 MPa and 58.6 MPa, respectively, representing increases of 34.73% and 84.86% over values for α-HHG. The XRD, FE-SEM, and TGA results all indicated that the hydration of α-HHG in the composite material was incomplete. The incompleteness is caused by the competition between the hydration process of inorganic α-HHG and the gelation process of the acrylamide molecules for water, which hinders some α-HHG from entirely reacting with water. The enhanced mechanical strength of the α-HHG/PAM composite material results from the tight interweaving and integrating of organic and inorganic networks. This study provides a concise and efficient approach to the modification research of hemihydrate gypsum.

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Bio-Fibres as a Reinforcement of Gypsum Composites

Cited by 24 publications

References 21 publications

Thermal and mechanical evaluation of natural fibers reinforced gypsum plaster composite

Thermal and mechanical evaluation of natural fibers reinforced gypsum plaster composite

Investigation of Physical Properties of Polymer Composites Filled with Sheep Wool

Synthesis and Characterisation of Hemihydrate Gypsum–Polyacrylamide Composite: A Novel Inorganic/Organic Cementitious Material

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