Biodeterioration of Sustainable Hemp Shive Biocomposite Based on Gypsum and Phosphogypsum

Būmanis, Ģirts; Irbe, Ilze; Šinka, Māris; Bajāre, Diāna

doi:10.1080/15440478.2021.1997871

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…However, the existing wood- and non-wood-based composites also encounter mold contamination risk at elevated moisture content. For example, the research on hemp composites with mineral binder [ 43 ] and wood composites with synthetic binders [ 44 ] also showed limited resistance to mold contamination.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Self-Growing Biomaterials Made of Fungal Mycelium and Various Lignocellulose-Containing Ingredients

et al. 2022

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In this study, novel blends of mycelium biocomposites (MB) were developed. Various combinations of birch sawdust and hemp shives with birch bark (BB) and wheat bran (WB) additives were inoculated with basidiomycete Trametes versicolor to produce self-growing biomaterials. MB were characterized according to mycelial biomass increment in final samples, changes in chemical composition, elemental (C, H, N) analyses, granulometry of substrates, water-related and mechanical properties, as well as mold resistance and biodegradability. The mycelial biomass in manufactured MB increased by ~100% and ~50% in hemp and sawdust substrates, respectively. The lignocellulose ingredients during fungal growth were degraded as follows: cellulose up to 7% and 28% in sawdust and hemp substrates, respectively, and lignin in the range of 13% in both substrates. A larger granulometric fraction in hemp MB ensured higher strength property but weakened water absorption (600–880%) performance. Perspective MB combinations regarding strength performance were hemp/BB and pure hemp MB (σ10 0.19–0.20 MPa; E 2.9 MPa), as well as sawdust/WB combination (σ10 0.23 MPa; E 2.9 MPa). WB positively affected fungal biomass yield, but elevated water absorption ability. WB improved compressive strength in the sawdust samples but decreased it in the hemp samples. BB supplement reduced water absorption by more than 100% and increased the density of sawdust and hemp samples. All MB samples were susceptible to mold contamination after full water immersion, with identified fungal genera Rhizopus, Trichoderma and Achremonium. The MB exhibited high biodegradability after 12 weeks’ exposure in compost, and are therefore competitive with non-biodegradable synthetic foam materials.

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Section: Resultsmentioning

confidence: 99%

Characterization of Self-Growing Biomaterials Made of Fungal Mycelium and Various Lignocellulose-Containing Ingredients

et al. 2022

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“…Similarities can be drawn by analysing different bio-based building materials as thermal insulation materials. In research about hempcrete, a density of 150-500 kg/m 3 can be seen with the compressive strength and thermal conductivity being in the ranges of 150-552 kPa [29] and 0.056-0.102 W/(mK) [30], [31]. Flexural strength changed in the 130-200 kPa [32].…”

Section: Discussionmentioning

confidence: 99%

Development of New Bio-Based Building Materials by Utilising Manufacturing Waste

Argalis,

Sinka,

Andzs

et al. 2024

Environmental and Climate Technologies

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Over the last decade, research has increasingly focused on reducing the use of natural resources and improving waste management in the construction industry. Various possibilities exist for reducing waste in this sector, ranging from using waste as filler materials to developing new binders and building materials. This study focuses on the development of bio-based building materials using waste from the manufacturing of wood-wool cement boards. The binder and filler materials were obtained from the manufacturing waste and used in this research. The developed materials were tested for their visual appearance, macrostructure, material density, thermal conductivity coefficient and compressive strength. The results showed promising data for the self-bearing bio-based building materials, which had similar thermal properties to other bio-based materials and could be used as thermal insulation materials with a thermal conductivity coefficient of 0.0827–0.1172 W/(mK). The material density of the developed bio-based composites was found to be 430–617 kg/m3. By incorporating manufacturing waste into the production process of bio-based building materials, it becomes evident that overall waste from manufacturing plants can be significantly reduced, and the sustainability aspect of wood-cement board manufacturers can be enhanced.

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“…Paper-free and fiber-free plasterboards Zhou et al [50] Intermittent press-forming hydration PG load-bearing tiles Zhou et al [49] Press-forming with two-step hydration process PG load bearing non-fired bricks and blocks Zhou et al [47] Villalon Fornes et al [48] Partial substitution 10-30% of natural gypsum in the gypsum binder Gypsum-based biocomposite Bumanis et al [57]…”

Section: Discussionmentioning

confidence: 99%

By-product Phosphogypsum Valorisation Possibilities in the Context of Circular Economy of Building Materials

Fornés,

Vaiciukyniene,

Nizeviciene

et al. 2023

Springer Tracts in Civil Engineering

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Phosphogypsum (PG) is the most significant solid waste in the world. However, only 15% of it is recycled, and the rest is stored in useless and environmentally-damaging stockpiles, which are continually growing. Therefore circular economy of PG through its utilisation in useful applications, is relevant and critical from an ecological perspective. In this context, its utilisation in building materials is among the most promising and attractive recycling possibilities, since PG typically exhibits excellent binding properties. However the applicability of PG is often restrained by its radiological risks and economic non-competitivity in comparison to traditional building materials, such as natural gypsum. In some cases, these obstacles refer to cultural prejudices and misinformation rather than real issues. Therefore, through a comprehensive literature review, this article considers the real potential of PG in building materials, providing useful information to interested stakeholders.

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Biodeterioration of Sustainable Hemp Shive Biocomposite Based on Gypsum and Phosphogypsum

Cited by 10 publications

References 41 publications

Characterization of Self-Growing Biomaterials Made of Fungal Mycelium and Various Lignocellulose-Containing Ingredients

Characterization of Self-Growing Biomaterials Made of Fungal Mycelium and Various Lignocellulose-Containing Ingredients

Development of New Bio-Based Building Materials by Utilising Manufacturing Waste

By-product Phosphogypsum Valorisation Possibilities in the Context of Circular Economy of Building Materials

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