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A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 8701

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Special Issue Editors

Dr. Anh Dung Tran Le

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Guest Editor

Laboratoire des Technologies Innovantes (LTI), Université de Picardie Jules Verne, Amiens, Picardie, France
Interests: biobased materials; hygrothermal behavior; hygrothermal characterization; building physics; indoor air quality; thermal comfort

Dr. Driss Samri

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Guest Editor

Health and Comfort, French Scientific and Technical Centre for Building, 84 avenue Jean Jaurès, 77447 Champs-sur-Marne, France
Interests: bio-based materials; hygrothermal behavior; instrumentation; indoor air quality; thermal comfort; sustainability and energy-efficient buildings

Dr. Omar Douzane

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Guest Editor

Laboratoire des Technologies Innovantes (LTI), Université de Picardie Jules Verne, Amiens, Picardie, France
Interests: biobased materials; low-impact building materials; building envelope; hygrothermal characterization; thermal behavior; sustainable building

Dr. Geoffrey Promis

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Guest Editor

Laboratoire des Technologies Innovantes (LTI), Université de Picardie Jules Verne, Amiens, Picardie, France
Interests: biobased materials; mechanical characterization; hygrothermal characterization; instrumentation; hygrothermal behavior; thermal comfort; energy-efficient buildings

Prof. Dr. Ton Hoang Mai

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Laboratoire ITheMM, Université de Reims Champagne Ardenne, Reims, France
Interests: biobased materials; hygrothermal behavior; building energy efficiency; life cycle assessment

Prof. Dr. Thierry Langlet

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Guest Editor

Laboratoire des Technologies Innovantes (LTI), Université de Picardie Jules Verne, Amiens, Picardie, France
Interests: biobased materials; hygrothermal behavior; thermal comfort; indoor air quality; durability; life cycle assessment

Special Issue Information

Dear Colleagues,

Climate change must be mitigated to avoid irreversible impacts. A significant share of climate impacts can be attributed to the construction sector and, specifically, to cement production. Thus, biobased materials (such as wood, hemp, flax, rape straw, miscanthus, bamboo, etc.) have been rapidly spreading in the building construction market. The use of biobased materials is an interesting solution because they are ecofriendly materials and have a low environmental impact. Many studies have highlighted that biobased materials present high moisture-buffering capacity, which can improve indoor hygrothermal comfort and represents a good compromise between thermal insulation and thermal mass, which can regulate the indoor temperature and reduce the building’s energy demands.

With this Special Issue, we aim to attract world researchers in the area of biobased materials to highlight the latest developments, discuss the performance of biobased materials subjected to different conditions (temperature, moisture, etc.), and to promote the use of biobased materials in building construction.

The accepted contributions will include experimental and numerical studies on biobased materials and valorization/optimization in addition to articles examining future trends in biobased building materials.

Dr. Anh Dung Tran Le
Dr. Driss Samri
Dr. Omar Douzane
Dr. Geoffrey Promis
Prof. Dr. Ton Hoang Mai
Prof. Dr. Thierry Langlet
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Keywords

biobased materials
hygrothermal properties
mechanical properties
hygrothermal performance
durability
instrumentation
simulation and modeling
application/optimization of biobased materials
sustainability and energy-efficient buildings
life cycle assessment

Published Papers (3 papers)

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Research

18 pages, 4673 KiB

Open AccessFeature PaperArticle

Impact of Temperature on the Moisture Buffering Performance of Palm and Sunflower Concretes

by Fathia Dahir Igue, Anh Dung Tran Le, Alexandra Bourdot, Geoffrey Promis, Sy Tuan Nguyen, Omar Douzane, Laurent Lahoche and Thierry Langlet

Appl. Sci. 2021, 11(12), 5420; https://doi.org/10.3390/app11125420 - 10 Jun 2021

Cited by 6 | Viewed by 2556

Abstract

The use of bio-based materials (BBM) in buildings is an interesting solution as they are eco-friendly materials and have low embodied energy. This article aims to investigate the hygric performance of two bio-based materials: palm and sunflower concretes. The moisture buffering value (MBV) characterizes the ability of a material or multilayer component to moderate the variation in the indoor relative humidity (RH). In the literature, the moisture buffer values of bio-based concretes were measured at a constant temperature of 23 °C. However, in reality, the indoor temperature of the buildings is variable. The originality of this article is found in studying the influence of the temperature on the moisture buffer performance of BBM. A study at wall scale on its impact on the indoor RH at room level will be carried out. First, the physical models are presented. Second, the numerical models are implemented in the Simulation Problem Analysis and Research Kernel (SPARK) suited to complex problems. Then, the numerical model validated with the experimental results found in the literature is used to investigate the moisture buffering capacity of BBM as a function of the temperature and its application in buildings. The results show that the temperature has a significant impact on the moisture buffering capacity of bio-based building materials and its capacity to dampen indoor RH variation. Using the numerical model presented in this paper can predict and optimize the hygric performance of BBM designed for building application. Full article

(This article belongs to the Special Issue Biobased Building Materials)

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15 pages, 3970 KiB

Open AccessFeature PaperArticle

Use of Bioceramics Enhanced with Effective Microorganisms as an Additive for Construction. Study of Physical and Mechanical Properties in Cement Mortars and Gypsum Plasters

by Filomena Pérez-Gálvez, María Jesús Morales-Conde and Manuel Alejandro Pedreño-Rojas

Appl. Sci. 2021, 11(8), 3519; https://doi.org/10.3390/app11083519 - 14 Apr 2021

Cited by 1 | Viewed by 1483

Abstract

Biomaterials are materials that are used to manufacture devices that interact with biological systems. According to their chemical composition, they can be classified as biometals, biopolymers, bioceramics, biocomposites and semiconductors. Thus, in the present work, the application of bioceramics, enhanced with effective microorganisms, to construction materials (cement mortars and gypsum plasters) was studied in order to see the benefits that its incorporation contributes to construction materials. This first work constitutes the first phase of an experimental campaign in which the influence of bioceramics on the physical and mechanical properties (flexural and compressive strength) of the studied materials was analyzed. Furthermore, scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) techniques were used. According to the results, a slight improvement in the mechanical properties of the new composites was observed. Besides, a more compact matrix was observed when bioceramics were used as an aggregate to the mixtures. Full article

(This article belongs to the Special Issue Biobased Building Materials)

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25 pages, 6158 KiB

Open AccessArticle

Performance of Thermally Modified Spruce Timber in Outdoor Above-Ground Conditions: Checking, Dynamic Stiffness and Static Bending Properties

by Joran van Blokland, Stergios Adamopoulos and Sheikh Ali Ahmed

Appl. Sci. 2020, 10(11), 3975; https://doi.org/10.3390/app10113975 - 8 Jun 2020

Cited by 6 | Viewed by 3548

Abstract

Previous studies have shown that thermally modified wood (TMW) performs well in outdoor, above-ground conditions in terms of resistance to wood-decaying fungi. Yet, little is known about the development of defects such as checks and the corresponding mechanical properties of TMW in this condition. This experiment focused on the effect of 30 months outdoor above-ground exposure (weathering) on the degree of checking, dynamic stiffness and static bending properties of thermally modified timber (TMT) of Norway spruce. Two board pairs per log were cut from 190 logs; one board of each pair was thermally modified and the other used as control. Then, 90 board pairs were exposed to the weather in south Sweden. Surface checking and axial stiffness were monitored at six-month intervals by using digital photography and non-destructive tests (time-of-flight and resonance method) to monitor changes in the material upon weathering. Finally, all boards were tested destructively in a 4-point static bending test following EN 408 standard. Results showed that weathering had no significance influence on static bending properties of TMT even though the degree of checking was considerably higher in TMT than unmodified timber after weathering. In particular, checks along growth rings were deeper, longer and more common in TMT after weathering, especially on the pith side of boards. The maximum depth of these checks did not depend on board orientation (i.e., which side was exposed) and exceeded limits given in strength grading standards for 7% of the modified boards included. Axial dynamic stiffness determined at 6-month intervals was less influenced by fluctuations in moisture content for TMT compared to unmodified timber, but did not confirm the increase in the degree of checking of TMT. The presence of checks from weathering did influence failure modes in TMT; horizontal shear failure became more frequent and some boards failed in compression. Full article

(This article belongs to the Special Issue Biobased Building Materials)

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