Carbon Footprint Assessment of a Novel Bio-Based Composite for Building Insulation

Carcassi, Olga Beatrice; Minotti, Pietro; Habert, Guillaume; Paoletti, Ingrid; Claude, Sophie; Pittau, Francesco

doi:10.3390/su14031384

Cited by 25 publications

(18 citation statements)

References 37 publications

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“…The evaluation of these two scenarios showed the influence that methodological choices for biogenic carbon storage accounting have in total GHG emissions estimation of the RBC, which meets with previous literature findings that have already highlighted the importance of the period of carbon storage in the building material to decrease the global warming potential impact [25], [46], [50], [51]. Therefore, these results underline the importance of considering different carbon storage periods in LCA modeling of bio-based materials, even bio-concretes, due to the uncertainty of service life of building materials, especially innovative ones, like the RBC.…”

Section: Ghg Emissions In the Three Functional Units (Fu)supporting

confidence: 78%

“…With this value fixed, it was possible to calculate the wall thickness for each RBC mixture, according with the procedure of NBR 15220-2 [45], as presented in Table 3. This approach is common in the literature for the evaluation, by LCA, of materials, especially bio-based ones used in buildings' façades [46].…”

Section: Goal and Scope Definitionmentioning

confidence: 99%

“…The three presented FU, especially the last two, provide subside for choosing the most appropriate RBC mixture in function of its application, and in this case, for a wall in a building façade. Pretot et al [52], Pittau et al [30] and Carcasi et al [46] used the U-value as a reference for FU definition of buildings' walls made of bio-based materials, mainly hempcretes. However, the studied properties (mechanical and thermal) are just two among a bigger universe of buildings performance (acoustic, waterproof, fire resistance, etc.…”

Section: Ghg Emissions In the Three Functional Units (Fu)mentioning

confidence: 99%

See 2 more Smart Citations

Circular economy in concrete production: Greenhouse Gas (GHG) emissions assessment of rice husk bio-concretes

Caldas

Araujo

Hasparyk

et al. 2022

Rev. IBRACON Estrut. Mater.

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Circular Economy (CE) is progressively attracting interest from construction sector stakeholders to support the development of products with higher amounts of recovered materials in order to decrease greenhouse gas (GHG) emissions. Concrete is one of the most used materials in the world and can be produced using waste as raw materials, including, bio-based sources, from both agricultural and forest activities. This research aims to assess the GHG emissions in the life cycle of innovative rice husk bio-concretes (RBC) in which rice husk (RH) and rice husk ash (RHA) are used as circular solutions. Four RBC, considering ordinary Portland cement replacement by 8% of RHA and, different contents of sand substitution by RH (0; 5 and 10%), were assessed. The Life Cycle Assessment (LCA) methodology was used, with a cradle-to-gate scope, using the GWPbio method, that contemplate the influence of biogenic carbon on the emissions reduction. Different transportation scenarios were evaluated considering the RBC production in different Brazilian regions. The service life of RBC in terms of carbon stock was also evaluated. Two carbon-performance indicators are also evaluated in terms of RBC compressive strength and thermal conductivity values. As the main conclusion, cement replacement by RHA alongside with sand replacement by RH are promising strategies to produce bio-concretes for specific applications, such as panels, partitions and façade elements, and to reduce its GHG emissions. However, this benefit varies according to RH availability, transport efficiency and RBC service life. The RBC can be considered a potential alternative for concrete industry, for specific applications, to reduce GHG emissions and can be developed where rice waste is an available source. This study contributes by presenting a new material and a methodology for the evaluation of life cycle GHG emissions of bio-concretes, which can help to promote a circular construction sector.

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Section: Ghg Emissions In the Three Functional Units (Fu)supporting

confidence: 78%

Section: Goal and Scope Definitionmentioning

confidence: 99%

Section: Ghg Emissions In the Three Functional Units (Fu)mentioning

confidence: 99%

See 1 more Smart Citation

Circular economy in concrete production: Greenhouse Gas (GHG) emissions assessment of rice husk bio-concretes

Caldas

Araujo

Hasparyk

et al. 2022

Rev. IBRACON Estrut. Mater.

View full text Add to dashboard Cite

show abstract

“…The lake plants were collected onsite in early fall season, whereas the hemp shives were provided from the Italian company Tecnocanapa by Senini [32] with a fibre length of 0.25 mm. The production process of the mycelium-based samples followed the protocol proposed by Carcassi et al [33] for both substrates here used. In particular, the two substrates were first soaked in water for 24 h to be hydrated and dried for 7 h. In a second moment, they were homogenized in terms of length with a kitchen blender for a duration of 20 seconds and sterilized in a high-pressure autoclave up to a temperature of 121 •C and at pressure of 100 kPa for a duration of 20 min.…”

Section: Sample Compositions and Materials Propertiesmentioning

confidence: 99%

Hygrothermal characterization of bio-based thermal insulation made of fibres from invasive alien lake plants bounded with mycelium

Pittau

Carcassi

Servalli

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The European program ‘Renovation Wave’ aims to fasten the energy retrofit of the building stock by increasing by a factor 4 the current renovation rate. Mycelium-based materials gained momentum as insulation solutions in recent years due to their 100% biological composition. However, their durability issues, particularly the risk of fast decay due to high moisture content, need to be investigated to promote a safe use in construction. Two bio-composites were set up at a lab scale, a combination of hemp shives and mycelium and a novel mixture based on the combination of mycelium binder and fibres from a lake plant, Lagarosiphon major, an alien invasive species locally available in many EU internal waters. Samples with different dimensions were used to characterize through experimental tests the thermal conductivity, water absorption (capillarity) and vapor permeability. The results show that these mycelium-based composites present both hydric and thermal properties similar to other bio-based material used in construction. The capillarity tests highlighted that hemp composites absorb more water than lake plant ones. The thermal conductivity is similar for both biocomposites, i.e., around 0.05 W/m.K, while the moisture buffer position both analysed biocomposites in “WS 3” according to the German classification DIN 18947 for water regulators.

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“…The use of such materials is really important in the building industry to reduce the impact of this market on the environment in different fields. Bio-based materials to be applied in the building industry can contain various fillers, e.g., bamboo [1], coconut [2], cellulose [3], cassava starch [4], and hemp shives [5][6][7]. The application of hemp shives appears potently attractive concerning the use of waste from fiber-using industries like textile one [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat transfer in bio-based building block with microencapsulated PCM

Cieślikiewicz

Łapka

Dietrich

et al. 2023

J. Phys.: Conf. Ser.

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The paper presents the investigation of heat transfer in hemp shives and magnesia binder composite with microencapsulated phase change material (PCM) to increase the building material’s thermal mass. The investigated sample was prepared as a three-layer block of dimensions 600×400×480 mm. The external layers of the block had a density of approximately 400-450 kg/m3 and a thickness of 50-60 mm, while the inner layer had a density of approximately 200-250 kg/m3 and a thickness of 290 mm. The study was performed with a block placed between two specially designed climatic chambers. Conditions in chambers were fully stabilized. Additionally, 50 mm wide channels with fans in both chambers were added close to the sample surfaces to force uniform airflow along both sample surfaces. For parameters control in the chambers, dedicated software was developed. Inside the sample nine temperature sensors were placed. During measurements, the temperature of 30°C and relative humidity of 40% was maintained in one chamber, while in the second one, after stabilization in temperature of 20°C and relative humidity of 50%, the temperature was decreased to 15°C without humidity control. During measurement insulating properties of PCM in dynamic conditions were analyzed.

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Carbon Footprint Assessment of a Novel Bio-Based Composite for Building Insulation

Cited by 25 publications

References 37 publications

Circular economy in concrete production: Greenhouse Gas (GHG) emissions assessment of rice husk bio-concretes

Circular economy in concrete production: Greenhouse Gas (GHG) emissions assessment of rice husk bio-concretes

Hygrothermal characterization of bio-based thermal insulation made of fibres from invasive alien lake plants bounded with mycelium

Experimental investigation of heat transfer in bio-based building block with microencapsulated PCM

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