Thermo-mechanical behaviour of hemp fibers-reinforced gypsum plasters

Iucolano, Ferdinando; Liguori, Barbara; Aprea, Paolo; Caputo, Domenico

doi:10.1016/j.conbuildmat.2018.07.036

Cited by 54 publications

(28 citation statements)

References 22 publications

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“…The fact that humans spend approximately 90% of the time indoors indicates the importance of the development of photocatalytic building material dedicated to interior applications, such as gypsum. Gypsum plaster is extensively used to make panels and coatings because of its numerous advantages, such as lightweight construction, thermal and sound insulation, fire resistant, and the creation of a healthy microclimate inside buildings [12,13]. However, gypsum plaster is relatively weak in tension showing brittle behavior [14].…”

Section: Introductionmentioning

confidence: 99%

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Improved Self-Cleaning Properties of Photocatalytic Gypsum Plaster Enriched with Glass Fiber

2019

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In the study the self-cleaning properties of photoactive gypsum plasters are presented. The modified gypsum plasters were obtained by addition of 1 and 3 wt.% of nitrogen-modified titanium dioxide (TiO2/N) and 0.1, 0.3, and 0.5 wt.% of glass fiber. The self-cleaning ability of the obtained materials was tested during two dyes decomposition: Methylene Blue (MB) and Reactive Orange (RO). It was found that presence of glass fiber increased photocatalytic activity of modified gypsum plasters, which may be due to the fact glass fiber may act as ducts for light and transport it to sites screened by TiO2 or glass fiber can retard charge recombination. Moreover, unexpectedly the addition of glass fiber did not increase the mechanical properties of modified gypsum plasters, which may be because gypsum does not strongly adhere to the surface of glass fibers.

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Section: Introductionmentioning

confidence: 99%

“…To optimize the mechanical and physical properties of gypsum products, the reinforcement with various types of fiber has been proposed [12]. These fibers can be classified into two groups as natural (carbon, jute, cotton fiber, etc.)…”

Section: Introductionmentioning

confidence: 99%

Improved Self-Cleaning Properties of Photocatalytic Gypsum Plaster Enriched with Glass Fiber

2019

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“…Sassoni et al [ 27 ] presented novel hemp-based composite materials, in the form of panels, produced by bonding hemp hurds with a new hybrid organic-inorganic binder, with a thermal conductivity value of 0.078 W/(m·K) for the low-density panels. Hemp fibers also show good performances as green reinforcement, leading to composites with good physical and mechanical properties if their low price and density are considered as terms of comparison with respect to industrial fibers [ 4 ]. However, the variability of the final mechanical properties of composites with natural fibers as reinforcing materials can make it difficult to predict their performance with any degree of precision [ 28 , 29 ].…”

Section: State-of-artmentioning

confidence: 99%

“…Indeed, the production of natural fibers is primarily based on solar energy, and it needs a small amount of energy from fossil fuels. Moreover, natural fibers are biodegradable, lightweight, renewable, nonabrasive, abundant, and are an important source of income for the population living in rural areas [ 3 , 4 , 5 ]. The most appealing advantages of natural fibers are their beneficial impact on the environment [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Mechanical and Thermal Properties of Hemp-Lime Mortar

Parcesepe

Masi

Lima³

et al. 2021

Materials

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The use of renewable and natural materials characterized by the low environmental impact is nowadays a key issue for the sustainable development of the construction industry. For this reason, the interest for natural fibers, to be used as reinforcement in composites as an alternative to other fibers, is continuously growing. In this paper, the use of hemp for reinforcing lime mortar used as plaster is considered with a multidisciplinary approach, taking into consideration the structural and thermal performance. Natural fibers have several advantages compared to industrial ones, such as low cost, low environmental impact, biodegradability, renewable nature. Moreover, these can show remarkable mechanical performance in relation to specific weight, and sometimes, as in the case of hemp fibers, these can improve the thermal insulation capacity of the plaster. However, the experimental results on the mechanical features are still lacking, especially to assess their durability, and the variability of thermal parameters with the mechanical characteristics. Therefore, this paper proposes an experimental program, developed at Laboratory of Materials and Structures (LAMAS) of the University of Sannio (Italy), aimed at investigating the main mechanical properties (compression strength, flexural strength) of lime mortar reinforced by hemp fibers and subjected to various environmental exposures and aging processes. The characterization is completed with the measurement for the produced samples of the thermal conductivity by means of the standardized guarded hot plate technique.

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“…En relación a esta última línea de investigación, varios autores se han centrado en el estudio de la viabilidad de la adición de fibras en la matriz de escayola durante el amasado para mejorar las características de estos materiales. Entre los estudios más recientes con fibras naturales destacan la adición de fibra de cáñamo para mejorar propiedades termo-mecánicas [7], la adición de fibra de abacá para prefabricados [8], o la adición de fibra de olivo para mejorar propiedades higrotérmicas [9]. En cuanto a las fibras artificiales, los avances más punteros son aquellos que se centran en la incorporación de nano partículas [9].…”

Section: Introductionunclassified

Comparative Analysis of Fibre-Reinforced Plasters for the Production of Precast Elements

Vega

Saíz

Morón

et al. 2020

DYNAII

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Gypsum is a material that has been widely used since ancient times in building and industrial construction. Due to the great development of prefabricated construction in the last years, diverse authors have tried to improve the properties of plaster panels and boards through its composition variations. The aim of this study is to determine what type of fibre, among the most used in plaster mixing ones, presents better properties to be used in prefabricated elements. For this, five types of fibres were used: two natural (wood and straw) and thee synthetic (glass, basalt and polypropylene), performing all the tests according to the standard UNE-EN 132792:2006. The conclusions show after statistical analysis that fiberglass presents better results for its application in the production of gypsum prefabricated panels and boards. Key words: gypsum-based composite, natural fibre, synthetic fibre, prefabricated.

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Thermo-mechanical behaviour of hemp fibers-reinforced gypsum plasters

Cited by 54 publications

References 22 publications

Improved Self-Cleaning Properties of Photocatalytic Gypsum Plaster Enriched with Glass Fiber

Improved Self-Cleaning Properties of Photocatalytic Gypsum Plaster Enriched with Glass Fiber

Assessment of Mechanical and Thermal Properties of Hemp-Lime Mortar

Comparative Analysis of Fibre-Reinforced Plasters for the Production of Precast Elements

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