Thermal insulation improvement in construction materials by adding spent coffee grounds: An experimental and simulation study

Lachheb, Amine; Allouhi, A.; Marhoune, M. El; Saadani, Rachid; Kousksou, T.; Jamil, A.; Rahmoune, Miloud; Oussouaddi, Omar

doi:10.1016/j.jclepro.2018.11.140

Cited by 91 publications

(24 citation statements)

References 32 publications

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“…Similar results were obtained by Lachheb et al [23] which studied the influence of adding coffee grounds, on the thermal properties of plaster. The authors of this work showed that adding 6% in the mass fraction of the used coffee grounds to the plaster might reduce its thermal conductivity from 0.5 to 0.314 W/m.K (38%).…”

Section: Thermal Diffusivitysupporting

confidence: 88%

Thermal characterization of a new bio-composite building material based on plaster and waste chicken feathers

Ouakarrouch

Laaroussi

Garoum

2020

Renew. Energy Environ. Sustain.

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The building materials used in Morocco characterized by a low thermal resistance which generates a huge expense in terms of energy consumption. Promoting new sustainable construction and insulation materials become a necessity. This research study aimed to develop the thermal proprieties of plaster building material by mixing it with waste chicken feathers (WCF) in order to be used as wall exterior rendering. For the purpose of determining the thermal properties of the biocomposite material Plaster-WCF, several experimental measurements of thermophysical proprieties had been performed in order to determine apparent density, thermal conductivity, and thermal diffusivity using the hot plate method in steady-state regime and the Flash method, respectively. The results showed that the addition of waste chicken feathers leads to a remarkable reduction in apparent density of about 12.3%, the thermal conductivity and diffusivity have been reduced by about 30.2% and 18%, respectively, which shows the interest of using this biocomposite material in the construction buildings in order to ensure thermal comfort and reduce greenhouse gas emissions (CO2).

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Section: Thermal Diffusivitysupporting

confidence: 88%

Thermal characterization of a new bio-composite building material based on plaster and waste chicken feathers

Ouakarrouch

Laaroussi

Garoum

2020

Renew. Energy Environ. Sustain.

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“…Esperato grass (Stippa Tenacissima) or commonly known as alfa, is a widely distributed plant in north Africa (Maghreb region) and south Spain . As all lignocellulosic materials, alfa is mainly composed of a complex network of cellulose (38.8 ‐ 46.1%) hemicellulose (24 ‐ 33.5%) and lignin (19.9 ‐ 24%) . This plant is commonly used in the production of pulp for paper industry .…”

Section: Introductionmentioning

confidence: 99%

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

2020

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The exploration of curing process of benzoxazine resins, which possess outstanding features, is crucial for practical and advanced applications. In this study, bisphenol A-aniline based benzoxazine (BA-a) composites reinforced with alkali treated alfa fibers (TAF) were prepared. The influence of different loadings of the TAF on the curing kinetics of BA-a was investigated using non-isothermal differential scanning calorimetry (DSC) at different heating rates. Isoconversional integral methods or model free kinetics, namely, the iterative Kissinger-Akahira-Sunose (it-KAS), iterative Flynn-Wall-Ozawa (it-FWO), Sbirrazzuoli methodology (VYA/CE) and Trache-Abdelaziz-Siwa-ni (TAS) methods have been applied to the experimental data in order to evaluate the curing kinetic parameters. The study revealed that the presence of TAF improved the crosslinking reaction of benzoxazine and reduced the activation energy. The pre-exponential factor exhibited the same trend as the activation energy. The reaction model, examined for all composites, showed that all systems were accurately presented by an autocatalytic reaction model. The Avrami-Erofeev model was the most appropriate for describing the cure kinetics and revealed a good agreement with experimental data.

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“…The work of Rahim et al [12] have been devoted to the alloy of mortar with a mass fraction of about 16% of three vegetable fibers, namely straw, hemp, and flax, the thermal conductivity is linear and increasing with the water content which has a remarkable effect at high temperature. Lachheb et al [13] showed that adding 6% in the mass fraction of the used coffee grounds to the plaster might reduce its thermal conductivity from 0.5 to 0,314W/m.K (38%).…”

Section: Introductionmentioning

confidence: 99%

Developing New Insulation Building Materials Based on Clay and Ecological Additives

Benallel¹,

Ouakarrouch²,

Mellaikhafi³

et al. 2020

IJITEE

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The thermal performance of exterior walls is considered as a key factor to improving energy efficiency in buildings, especially in areas with cold climates in winter and warm climates in summer. As part of this study, and whose building materials are known for their low thermal properties. The X-ray diffraction was performed on the clay material and the different fibers in order to determine their crystallinity. An experimental characterization of thermophysical properties of a new biocomposites material for the sustainable buildings construction in southern Morocco is presented. These materials can be used as mortar for ceilings and exterior walls. To this end, several samples were prepared from clay extracted from the Errachidia region (south-east Morocco) and three mass fractions of alfa, fig and reed fibers (20%, 40% and 60%). The thermal characterization method adopted is that of the highly insulated thermal house. The results revealed that the incorporation of alfa, fig and reed fibers into the clay matrix allowed a remarkable reduction in apparent density and thermal conductivity. This result shows the interest of using this biocomposite material in construction buildings to ensure thermal comfort and reduce greenhouse gas emissions.

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Thermal insulation improvement in construction materials by adding spent coffee grounds: An experimental and simulation study

Cited by 91 publications

References 32 publications

Thermal characterization of a new bio-composite building material based on plaster and waste chicken feathers

Thermal characterization of a new bio-composite building material based on plaster and waste chicken feathers

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

Developing New Insulation Building Materials Based on Clay and Ecological Additives

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