Seagrass- and wood-based cement boards: A comparative study in terms of physico-mechanical and structural properties

Mayer, Aaron Kilian; Kuqo, Aldi; Koddenberg, Tim; Mai, Carsten

doi:10.1016/j.compositesa.2022.106864

Cited by 12 publications

(3 citation statements)

References 34 publications

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“…Thermal conductivity also decreased from 0.35 W/m/K in the absence of fibers to 0.11 W/m/K in the presence of 20% of them. The physical-mechanical properties and the resistance to water and fire of the cement made with POEG fibers and the cement based on pine wood have been studied by Mayer et al [ 36 ] (POEG samples collected in Durrës, Albania, 41°19′27″ N, 19°27′21″ E). The results obtained showed that the POEG fiber-based cement had higher mechanical strength and toughness compared to the pine wood-based cement due to its higher compatibility.…”

Section: Posidonia Oceanica Egagropili As Lignocellulosic Bi...mentioning

confidence: 99%

Sustainable Exploitation of Posidonia oceanica Sea Balls (Egagropili): A Review

Restaino

Giosafatto

Mirpoor

et al. 2023

IJMS

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Posidonia oceanica (L.) Delile is the main seagrass plant in the Mediterranean basin that forms huge underwater meadows. Its leaves, when decomposed, are transported to the coasts, where they create huge banquettes that protect the beaches from sea erosion. Its roots and rhizome fragments, instead, aggregate into fibrous sea balls, called egagropili, that are shaped and accumulated by the waves along the shoreline. Their presence on the beach is generally disliked by tourists, and, thus, local communities commonly treat them as waste to remove and discard. Posidonia oceanica egagropili might represent a vegetable lignocellulose biomass to be valorized as a renewable substrate to produce added value molecules in biotechnological processes, as bio-absorbents in environmental decontamination, to prepare new bioplastics and biocomposites, or as insulating and reinforcement materials for construction and building. In this review, the structural characteristics, and the biological role of Posidonia oceanica egagropili are described, as well as their applications in different fields as reported in scientific papers published in recent years.

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Section: Posidonia Oceanica Egagropili As Lignocellulosic Bi...mentioning

confidence: 99%

Sustainable Exploitation of Posidonia oceanica Sea Balls (Egagropili): A Review

Restaino

Giosafatto

Mirpoor

et al. 2023

IJMS

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“…One of the popular bio-based cementitious building materials that has been in use for decades is the wood wool panel. This product, also known as a wood wool cement board (WWCB), is a composite building material made of wood fibres, Portland cement, and water [ 7 , 8 , 9 ]. While wood, the main component of WWCB, is technically renewable, there are concerns about the rate at which it is harvested for WWCB production.…”

Section: Introductionmentioning

confidence: 99%

“…Examples of plant aggregates that have been used include straw bales [ 11 ] and hemp hurds [ 12 ]. Despite their abundance and effective properties, the limited compatibility between plant aggregates and cementitious binders has posed challenges in the manufacturing of WWCB, and ultimately the performance of these composites, using these alternatives [ 6 , 8 , 9 , 13 ]. Furthermore, studies have shown that composites made with cement and plant aggregates often have low mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Retarding Effect of Hemp Hurd Lixiviates on the Hydration of Hydraulic and CSA Cements

Tale Ponga,

Sabziparvar,

Cousin

et al. 2023

Materials

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Wood wool panels are widely used in the construction industry as sustainable cementitious composites, but there is a growing need to replace traditional Portland cement with a binder that has a lower embodied carbon footprint. In addition, the sustainability of these panels may face serious impediments if the required amount of wood for their production needs a harvest rate higher than the rate at which the tree sources reach maturity. One solution is to use the wooden part of fast-growing plants such as hemp. However, the compounds extracted from the mixture of plants and water are the main cause of the delay observed during the hydration process of hydraulic binders in these cementitious composites. The objective of this study is to evaluate the effect of bio-aggregate lixiviates (hemp hurd) on the hydration kinetics of calcium sulfoaluminate (CSA) cement as a low-embodied-carbon alternative to ordinary Portland cement (OPC). The isothermal calorimeter showed that the hemp hurd lixiviate caused a greater delay in GU’s hydration process than CSA’s. At a 5% concentration, the main hydration peak for GU cement emerged after 91 h, whereas for CSA cement, it appeared much earlier, at 2.5 h. XRD and TGA analysis showed that after 12 h of hydration, hydration products such as calcium silicate hydrates (C-S-H) and portlandite (CH) were not able to form on GU cement, indicating low hydration of silicate products. Moreover, at 5% concentration, the carbonation of ettringite was observed in CSA cement. The compressive strength values obtained from the mixes containing hemp hurd lixiviate consistently showed lower values compared to the reference samples prepared with distilled water. Furthermore, the CSA samples demonstrated superior compressive strength when compared to the GU samples. After 28 days of hydration, the compressive strength values for CSA cement were 36.7%, 63.5% and 71% higher than GU cement at a concentration of 0.5%, 2% and 5% hemp hurd lixiviate, respectively.

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Basalt grid reinforcement of wood-based panels

Mayer,

Mai

2024

Eur. J. Wood Prod.

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Seagrass- and wood-based cement boards: A comparative study in terms of physico-mechanical and structural properties

Cited by 12 publications

References 34 publications

Sustainable Exploitation of Posidonia oceanica Sea Balls (Egagropili): A Review

Sustainable Exploitation of Posidonia oceanica Sea Balls (Egagropili): A Review

Retarding Effect of Hemp Hurd Lixiviates on the Hydration of Hydraulic and CSA Cements

Basalt grid reinforcement of wood-based panels

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