An experimental investigation into the comparative hygrothermal performance of wall panels incorporating wood fibre, mineral wool and hemp-lime

Latif, Eshrar; Lawrence, Michael B.; Shea, Andrew; Walker, Pete

doi:10.1016/j.enbuild.2018.01.028

Cited by 48 publications

(24 citation statements)

References 39 publications

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“…Bio-fibre composites can be developed using agro-waste which is widely available. Internal wall bio-based panels optimisation has been studied by other researchers (Arnaud, 2009;Pavlik et al, 2011;Latif et al, 2016;Latif et al, 2018). However, the knowledge on the passive mechanisms and the hygroscopic characteristics associated to these materials is not fully mastered.…”

Section: Introductionmentioning

confidence: 99%

Dynamic behaviour of bio-based and recycled materials for indoor environmental comfort

Romano

Brás

Grammatikos

et al. 2019

Construction and Building Materials

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UK construction industry contributes 120 Mt of waste every year. Bio-based building materials may be a solution for this problem, as they combine re-use and recycling abilities together with hygroscopic characteristics, leading to buildings energy savings. For the first time, the dynamic response to hygrothermal changes of bio-based materials is examined in terms of Moisture Buffering Value (MBV), dry/ wet thermal conductivity, microstructure, density and latent heat through daily cycles. It is shown that MBV is a useful tool for characterisation but needs to be combined with the shape of the change in mass of the final hygrothermal cycle. Mastering this is required to obtain significant improved indoor environment quality in buildings. Ten samples of bio-based insulation materials and one thermoplastic recycled polymer were analysed (wool, hemp, saw mill residue, wood, straw, cork and polyethylene terephthalate). Saw and wool are the most promising, as materials exhibit dynamic response to hygrothermal changes. Only half the amount of samples revealed equivalent efficient moisture transfer to be able to desorb the adsorbed quantity of water. Latent heat of vaporisation and condensation tests led to the conclusion that samples of wool and saw mill residue can qualify as bio-based materials for 'green' panels.

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Section: Introductionmentioning

confidence: 99%

Dynamic behaviour of bio-based and recycled materials for indoor environmental comfort

Romano

Brás

Grammatikos

et al. 2019

Construction and Building Materials

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“…Interestingly, the density of all composites are lower than neat PLA except PR4. PR2 and PR3 composites have the lowest values with about 1.12 g/cm 3 , where the density is increased with increasing fiber ratio for PR4 composite (PR4 significantly different than PR2 and PR3 (p<0.05)). It was expected that the mineral fibers might increase the density more; however, there is no sharp changes even with 40% increase of RFs.…”

Section: Density Of Compositesmentioning

confidence: 89%

Production and Characterization of Polylactic acid/Rock wool Biocomposites

Aykanat¹,

Ermeydan²

2020

Journal of Innovative Science and Engineering (JISE)

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Rock wool is a man-made fiber produced by melting inorganic stones such as basalt, diabase, dolomite obtained from volcanic rocks, and it is an environment friendly resource and generally used for building insulation. Rock wool has good thermal resistance and insulation properties. In this study, PLA/Rock wool biocomposites with 20-30-40% rock wool support were produced with twin-screw extruder and then press molded. Tensile and flexural tests were applied to reveal mechanical properties of composites. FT-IR spectroscopy was used for investigation of chemical changes. TGA /DTG analysis were carried out to determine thermogravimetric properties of biocomposites, where thermal conductivity was measured to investigate heat transfer characteristics. The results showed that flexural strength of composites decreased 5-40% with increasing ratio of rock wool (20-40%), while tensile strength decreased 40-60% with increasing amount of rock wool (20-40%). Besides that, rock wool accelerated thermal degradation of PLA, but the composites have 25% better heat insulation property than neat PLA.

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“…Over the last 5 years, several studies from the literature explored the hygrothermal behavior of building materials at the wall scale. Some of them involved numerical approaches based on heat and mass transfer calculations [12,13], while others involved experimental approaches using climate chambers or onsite exposures [14,15]; these studies were carried out on either conventional or bio-based building materials [16].…”

Section: Introductionmentioning

confidence: 99%

“…Latif et al [14] used a bi-climatic chamber to study the hygrothermal behavior of three different panels made of mineral wool, wood fibers, and a combination of wood fibers and hemp-lime [14,17]. Pavlík et al investigated the hygrothermal performance of a designed insulation system under conditions corresponding to the winter climate in Middle Europe [18].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on hygrothermal performance of a bio-based wall made of cement mortar filled with date palm fibers

Chennouf

Agoudjil

Alioua

et al. 2019

Energy and Buildings

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In the present work, the hygrothermal behavior of a wall structure made of a novel biobased material, i.e. date palm fiber reinforced concrete was investigated. In this context, a specific setup was developed which allows simulating a bi-climatic environment with separate outdoor and indoor environments. This device made it possible to apply various scenarios of static / dynamic hygrothermal loading to the outer side of wall, involving variation/cycling of temperature (T) and /or relative humidity (RH). During these experiments, resulting variations of T and RH across the wall thickness were monitored with in-situ sensors. Outstanding thermo-hygric phenomena were highlighted, such as high coupling effect between heat and moisture transfers, resulting from evaporation-condensation and sorption-desorption processes. Besides, significant thermal and hygric inertia was observed through the Date Palme Concrete (DPC) wall. The response time of this DPC wall to temperature variations remains shorter than in the case of humidity variations. Even so, large damping effect is obtained compared to outdoor boundary conditions, which make this DPC wall a good candidate for mitigating overheating during summertime and reducing interstitial condensation as well.

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An experimental investigation into the comparative hygrothermal performance of wall panels incorporating wood fibre, mineral wool and hemp-lime

Abstract: experimental investigation into the comparative hygrothermal performance of wall panels incorporating wood fibre, mineral wool and hemp-lime. Energy and Buildings 165 , pp.

Cited by 48 publications

References 39 publications

Dynamic behaviour of bio-based and recycled materials for indoor environmental comfort

Dynamic behaviour of bio-based and recycled materials for indoor environmental comfort

Production and Characterization of Polylactic acid/Rock wool Biocomposites

Experimental investigation on hygrothermal performance of a bio-based wall made of cement mortar filled with date palm fibers

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