2021
DOI: 10.1016/j.buildenv.2020.107462
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Relationship between hygrothermal and acoustical behavior of hemp and sunflower composites

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Cited by 19 publications
(20 citation statements)
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“…Generally, models do not specify which type of porosity must be used and, since the correlation has been found between 𝜆 and 𝜙 𝑖𝑛𝑡𝑒𝑟 , it seems more logical to use the latter. As mentioned in (Abbas et al, 2021), a plausible explanation is that for the bio-based composites studied, which are known to have a double-scale porosity, only the bigger-scale pores have an influence on thermal properties. The only parameter left, and consequently the parameter used for the adjustment, is the thermal conductivity of the solid phase 𝜆 𝑠 .…”
Section: Tab 3: Summary Of the Results Of The Geometrical Parametersmentioning
confidence: 96%
See 1 more Smart Citation
“…Generally, models do not specify which type of porosity must be used and, since the correlation has been found between 𝜆 and 𝜙 𝑖𝑛𝑡𝑒𝑟 , it seems more logical to use the latter. As mentioned in (Abbas et al, 2021), a plausible explanation is that for the bio-based composites studied, which are known to have a double-scale porosity, only the bigger-scale pores have an influence on thermal properties. The only parameter left, and consequently the parameter used for the adjustment, is the thermal conductivity of the solid phase 𝜆 𝑠 .…”
Section: Tab 3: Summary Of the Results Of The Geometrical Parametersmentioning
confidence: 96%
“…Nevertheless, the lack of data for the thermal conductivity of the solid phase of bio-based composites prevents us from validating this model. Consequently, the most promising approximation to a model from literature remains Lichtenecker's formula, which was presented in (Abbas et al, 2021).…”
Section: Tab 3: Summary Of the Results Of The Geometrical Parametersmentioning
confidence: 99%
“…Sound absorption highly depended on the proportion of cellulose fibers, producing CF15 the maximum value of sound absorption (0.127). However, a larger number of fibers (CF30) did not enlarge the noise absorption coefficient (α NRC ) of MP-LCM [8]. It was observed that cellulose fibers and the volumetric fraction of CF did not significantly change the acoustic insulation.…”
Section: Effect Of Mp-lcm Composition On Acoustic Propertiesmentioning
confidence: 94%
“…Mortars and other conglomerated materials have been usually considered good sound insulation materials due to their high density, although bad noise absorbents are due to their high acoustic reflection [7]. However, the acoustic performance of cement-based materials depends on the size and distribution of pores and variation in components' properties [8][9][10]. Acoustic absorption of mortars can be enhanced by selecting aggregate grading and maximum aggregate size [11].…”
Section: Introductionmentioning
confidence: 99%
“…The addition of plant aggregates increased the open porosity inside the composite, which improved its acoustical performance. In addition, it was observed that in the case of the composites made from the composed binder (mixture of hydraulic lime, calcareous charges, hydrophobic, and rheological admixtures) and hemp shiv (C2-H*), and sunflower pith (C2-S), the air resistivity of the composites varied from one aggregate to another [165] and was equal to 11625 N.s.m -4 .and 36250 N.s.m -4 for C2-H* and C2-S, respectively. However, as mentioned previously, the unknown dosages (kg.m -3 ) of binder in the two mixtures made the comparison difficult.…”
Section: Figure 24mentioning
confidence: 99%