Sustainable adobe bricks with seagrass fibres. Mechanical and thermal properties characterization

Olacia, Elena; Pisello, Anna Laura; Chiodo, V.; Maisano, Susanna; Frazzica, Andrea; Cabeza, Luisa F.

doi:10.1016/j.conbuildmat.2019.117669

Cited by 63 publications

(28 citation statements)

References 36 publications

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“…Next interesting application of brewer’s spent grains are construction materials. Nowadays, there are numerous attempts to utilize biological by-products in such a way [ 108 , 109 , 110 ]. Brewer’s spent grain seem to be feasible for fillers and reinforcement materials.…”

Section: Sustainable Materialsmentioning

confidence: 99%

Brewer’s Spent Grains—Valuable Beer Industry By-Product

et al. 2020

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The brewing sector is a significant part of the global food industry. Breweries produce large quantities of wastes, including wastewater and brewer’s spent grains. Currently, upcycling of food industry by-products is one of the principles of the circular economy. The aim of this review is to present possible ways to utilize common solid by-product from the brewing sector. Brewer’s spent grains (BSG) is a good material for sorption and processing into activated carbon. Another way to utilize spent grains is to use them as a fuel in raw form, after hydrothermal carbonization or as a feedstock for anaerobic digestion. The mentioned by-products may also be utilized in animal and human nutrition. Moreover, BSG is a waste rich in various substances that may be extracted for further utilization. It is likely that, in upcoming years, brewer’s spent grains will not be considered as a by-product, but as a desirable raw material for various branches of industry.

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Section: Sustainable Materialsmentioning

confidence: 99%

Brewer’s Spent Grains—Valuable Beer Industry By-Product

et al. 2020

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“…Olacia et al [40] studied the thermomechanical characterization of adobes reinforced with marine fibers at two different lengths 1 cm and 3 cm and a comparison with straw fibers, the results showed that from a given percentage (from 1.5 to 3%) the 1 cm length had a better compressive strength than the 3 cm length for straw and the opposite for marine fibers. Flexural strength showed a decrease when more fibers are included in the adobes [40]. Marques et al [38] claim that composites with a higher percentage of rice husk are less rigid and have a lower internal bond strength [38].…”

Section: Microscopic Imagesmentioning

confidence: 99%

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

Abbassi

Ngo

et al. 2020

Waste Biomass Valor

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This study presents the elaboration and characterization of a composite material based on Typha australis and clay for the use of an innovative building material in construction. For this purpose, various percentages ranging from 0 to 55% with a pitch of 15 were used. The aim is to find a better compromise between the thermal and mechanical properties of this composite material. According to this, the influence of the length of the 1 cm and 3 cm fibers was studied. As Typha australis is very porous, the hydric properties of the material studied in this work show that its porosity increases the rate of water absorption following a logarithmic law and the mass loss of the composite material evolves exponentially as a function of time. The mass increases when the percentage of fibers is low. The thermophysical property of Typha australis is 0.06 W/m K. That property allows us to state that Typha australis can be used for thermal insulation. The thermophysical properties of the composite material show that the thermal conductivity decreases as the percentage and length of fibers increase. In fact, the thermal conductivity of the clay is 1.03 W/m K while the mixture of clay with 55% of 1 cm fibers gave a thermal conductivity of 0.146 W/m K. The mixture of clay with the same percentage of 3 cm fibers gave a thermal conductivity of 0.113 W/m K. Nevertheless, the fibers have a negative effect on the mechanical properties and the increase in the length of the fibers improves the flexural strength.

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“…The mechanical properties with the addition of sea grass fibres to the soil of adobe brick was studied [2]. The experimental test result concludes that both the compressive and flexural strength of adobe brick is improved due to the addition of sea grass fibres.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The bricks in current practice are formed in larger size and this leads to increased heaviness with decreased strength [1]. Moreover, the durability and strength of the building is affected over years later due to the decomposition of teff straw present in the bricks which causes higher porosity [2]. This demerit the building structure by becoming more brittle and leads to poor performance during the seismic condition [3].…”

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confidence: 99%

An engineered alternative brick masonry unit for the poor inhabitants at hawassa village, Ethiopia

Daniel¹,

Basora²,

Gebrie³

2021

IJATEE

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The traditional house construction pattern in the southern rural regions of Ethiopia is preferably constructed by means of "Chika-pet", which is the mud and wood construction technique, due to the poverty and low annual income of the inhabitants. "Chika" is a composite mixture of clay, teff straw and water, that is used as a gap filling material between the wooden frames and finally as a plaster. Due to the climatic uncertainties, this mud wall construction pattern experiences severe shortcomings such as wide crack formation in the walls, shrinkage, strength weakening, and prone to be eroded by rain which deteriorates the durability.*Author for correspondence Later on, to cope with these drawbacks the animal dung is used as a protective coating on the Chika-pet house walls. It further requires frequent maintenance and cost wise unaffordable by the inhabitants. Moreover, these houses require plenty of woods for the construction of walls and roofs which increases the cost and deforestation rate, hence these mud walls using soil is considered to be defective.Recently, the advancement of house construction in the southern regions of Ethiopia is upgraded by using bricks as the construction material. In current practice, the brick masonry units are made of a composition of soil and teff straw fibre, wherein the s oil is preferably collected from the far distance regions like Ziway, Alemtena and Meki. The negligence of their native southern region soil is due to its poor brick construction characteristics and hence this complicates Re search Article

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Sustainable adobe bricks with seagrass fibres. Mechanical and thermal properties characterization

Cited by 63 publications

References 36 publications

Brewer’s Spent Grains—Valuable Beer Industry By-Product

Brewer’s Spent Grains—Valuable Beer Industry By-Product

Experimental Investigation of Thermal and Mechanical Properties of Clay Reinforced with Typha australis: Influence of Length and Percentage of Fibers

An engineered alternative brick masonry unit for the poor inhabitants at hawassa village, Ethiopia

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