Serviceability limit state model for fungal growth on wood materials in the built environment

Lepage, Robert; Glass, Samuel V.; Bastide, Paul; Mukhopadhyaya, Phalguni

doi:10.1016/j.jobe.2022.104085

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…Instead, decision making could be based on the calculated probability of the presence or absence of visible moulds by naked eyes, as suggested in [1], which uses a binomial logistic regression model. Mould development in dynamic environmental conditions over several consecutive years is usually needed to predict when processing the outputs of hygrothermal simulations.…”

Section: Discussionmentioning

confidence: 99%

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Modelling of mould growth on pine sapwood: the preliminary analysis of input parameters in a logistic mould growth model

Kopecký,

Staněk

2023

J. Phys.: Conf. Ser.

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This paper deals with a logistic growth equation which was used for calculations of mould development on wood in time. The values of input parameters were determined by mutual comparisons of the logistic growth equation and synthetic mould growth data. Synthetic mould growth curves were calculated by the Finnish mould growth model for pine sapwood. A transition function between dimensionless mould index (the state variable of the Finnish mould growth model) and microscopic mould coverage fraction (the state variable of the logistic mould growth model) was proposed to facilitate numerical comparisons between both models. The insight to input parameters of the logistic mould growth model was then gained by plotting optimal values of parameters as a function of temperature and relative humidity, or moisture content. The setting of input parameters in mould growth models was then briefly discussed. It is concluded that further development of mould growth models should be based on systematic comparison with mould growth experiments. Not only growth under favourable conditions, but also the regrowth process after desiccation period must be correctly addressed in the model.

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Section: Discussionmentioning

confidence: 99%

“…They are amongst the first colonizers of wood. Since the structural properties of wood are not affected by moulds, the predicted presence of visible moulds can serve as the serviceability state of a building component [1]. The ultimate and serviceability limit states are traditionally used in the design of loadbearing structural elements.…”

Section: Introductionmentioning

confidence: 99%

Modelling of mould growth on pine sapwood: the preliminary analysis of input parameters in a logistic mould growth model

Kopecký,

Staněk

2023

J. Phys.: Conf. Ser.

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Comparison of mold experiments on building materials: A methodological review

Lai,

Liu,

Feng

et al. 2024

Building and Environment

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Fungal mycelium-based biofoam composite: A review in growth, properties and application

Majib,

Yaacob,

Ting

et al. 2024

Progress in Rubber, Plastics and Recycling Technology

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Recent years have shown a surge in interest in incorporating living systems into materials research to synthesize functional materials using biological resources. Among these, mycelium-based materials, notably biofoam, have emerged as innovative solutions for repurposing organic wastes that were previously considered unusable. The growth of mycelium, vital for the synthesis of biofoam, is influenced by a multuple of factors including substrate composition, moisture content, temperature, nutrient availability, pH levels, oxygen concentration, and measures for contamination control. Additionally, physical stimulation techniques have been explored to enhance mycelium growth, ranging from cold stress-induced adaptations to electrical shock-induced modifications and optimization of sound treatments and light exposure. This review highlights the growing interest in biofoam composite materials, a novel class of environmentally friendly and cost-effective materials that are gaining popularity, for advancing sustainable construction practices. Biofoam composites use organic fungal growth as a low-energy bio-fabrication process to transform abundant agricultural byproducts and waste into viable alternatives to energy-intensive manufactured building materials. Their versatility in composition and manufacturing methods allows them to be used in a wide range of applications, including insulation and door cores, panelling, flooring, and furniture components. Notably, biofoams outperform synthetic foams and engineered wood in terms of thermal insulation, sound absorption, and fire resistance, making them highly promising for construction industry. Besides, due to its customizable composition and production method, biofoam can be used in the replacement of foams, leather, wood, and plastics in a variety of applications such as water treatment and filtration, medical supplies and healthcare applications. However, despite their remarkable properties, biofoam typically serve as non- or semi-structural supplements to traditional construction materials due to inherent limitations. Nevertheless, the useful material properties of these materials, combined with their low cost, ease of manufacture, and environmental sustainability, imply that they will have an important part to play in the development of environmentally friendly materials in the future.

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Serviceability limit state model for fungal growth on wood materials in the built environment

Cited by 6 publications

References 17 publications

Modelling of mould growth on pine sapwood: the preliminary analysis of input parameters in a logistic mould growth model

Modelling of mould growth on pine sapwood: the preliminary analysis of input parameters in a logistic mould growth model

Comparison of mold experiments on building materials: A methodological review

Fungal mycelium-based biofoam composite: A review in growth, properties and application

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