Comparative experimental investigation of natural fibers reinforced light weight concrete as thermally efficient building materials

Asim, Muhammad; Uddin, Ghulam Moeen; Jamshaid, Hafsa; Raza, Ali; Tahir, Zia ul Rehman; Hussain, Uzair; Satti, Aamir Naseem; Hayat, Nasir; Arafat, Syed Muhammad

doi:10.1016/j.jobe.2020.101411

Cited by 76 publications

(22 citation statements)

References 51 publications

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“…However, the main disadvantage of insulation materials is the reduction of mechanical properties, such as compressive and tensile strength, which limits their percentage in building materials (between 2.5% and 10%) [23,24].…”

Section: Conventional Building Envelopesmentioning

confidence: 99%

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

et al. 2021

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Latent heat thermal energy storage systems incorporate phase change materials (PCMs) as storage materials. The high energy density of PCMs, their ability to store at nearly constant temperature, and the diversity of available materials make latent heat storage systems particularly competitive technologies for reducing energy consumption in buildings. This work reviews recent experimental and numerical studies on the integration of PCMs in building envelopes for passive energy storage. The results of the different studies show that the use of PCMs can reduce the peak temperature and smooth the thermal load. The integration of PCMs can be done on the entire building envelope (walls, roofs, windows). Despite many advances, some aspects remain to be studied, notably the long-term stability of buildings incorporating PCMs, the issues of moisture and mass transfer, and the consideration of the actual use of the building. Based on this review, we have identified possible contributions to improve the efficiency of passive systems incorporating PCMs. Thus, fatty acids and their eutectic mixtures, combined with natural insulators, such as vegetable fibers, were chosen to make shape-stabilized PCMs composites. These composites can be integrated in buildings as a passive thermal energy storage material.

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Section: Conventional Building Envelopesmentioning

confidence: 99%

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

et al. 2021

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“…In the present article, we have thoroughly reviewed the methods and techniques employed for the extraction of Hibiscus sabdariffa fibres (HSFs) from the Hibiscus sabdariffa (HS) plant, the conversion of macroforms of HSFs to micro-and nano forms, and the functionalization of HSFs. Additionally, the utility of virgin and surface-modified HSFs as fortifying agents in polymer composites, as adsorbent materials for dyes and heavy metals in contaminated water, and as dielectric materials for different applications have also been examined [17][18][19] (Fig. 2).…”

Section: Introductionmentioning

confidence: 99%

The bright side of cellulosic hibiscus sabdariffa fibres: towards sustainable materials from the macro- to nano-scale

Rana

Thakur

2021

Mater. Adv.

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“…Several authors have attempted to incorporate sugarcane bagasse in the form of fibers in order to improve the properties of reinforced concrete mixtures [ 21 , 22 , 23 ]. They have observed some advantages for the incorporation of these fibers, such as an increase in toughness and impact resistance.…”

Section: Introductionmentioning

confidence: 99%

Improvement in the Carbonation Resistance of Construction Mortar with Cane Bagasse Fiber Added

et al. 2021

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In this work, sugarcane bagasse fiber, a waste product of agroindustry, was added to mortar mixes at different proportions looking to seal porosities so as to improve the resistance of concrete to carbonation and to improve its mechanical properties. To evaluate the behavior of bagasse fibers in the alkaline media typical of mortars, bagasse fibers were subjected to solutions with alkaline pH values, and their chemical structure and morphological behavior was evaluated using FTIR (Fourier transform infrared spectroscopy) and SEM (Scanning Electron Microscopy). Using mortar cylinders in an accelerated carbonation chamber to obtain results in short lapses, the compressive strength and the carbonation were evaluated. The FTIR analysis results indicate that pH values of 11 and 12 causes a delignification, while at pH 9 and 10, a swelling of the molecule occurs because of the addition of hydroxyl ions, behavior that is confirmed with SEM images. A clear effect of the fiber addition on the performance of concrete was observed as the carbonation front of 35 mm for the sample without fibers was reduced to 2 mm for the sample with 2% fiber addition, resulting in an increase of 5 MPa in compressive strength. These results indicate that in the range of mortar pH, chemical changes occured over the sugarcane surface that could cause the growth of fibers and could partially seal the porosity in the mortars, thus enhancing its performance.

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Comparative experimental investigation of natural fibers reinforced light weight concrete as thermally efficient building materials

Cited by 76 publications

References 51 publications

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

Review on the Integration of Phase Change Materials in Building Envelopes for Passive Latent Heat Storage

The bright side of cellulosic hibiscus sabdariffa fibres: towards sustainable materials from the macro- to nano-scale

Improvement in the Carbonation Resistance of Construction Mortar with Cane Bagasse Fiber Added

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