The Influence of Nano-clays on Compressive Strength of Earth Bricks as Sustainable Materials

Niroumand, Hamed; Zain, Muhammad Fauzi Mohd.; Alhosseini, Sanaz Naghavi

doi:10.1016/j.sbspro.2013.08.945

Cited by 43 publications

(15 citation statements)

References 11 publications

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“…From last few years, clay is gaining much attention for its unique characteristics. Clay minerals are signified as layers of mineral silicates that are naturally abundant, inexpensive, non-toxic to the environment, composed of amorphous phase and having different types of geometry [21][22][23]. It is preferred for its high adsorption capacity, reactivity and stability.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Ashour

Tony

2020

SN Appl. Sci.

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Inexpensive and naturally abundant clay mineral is investigated as a non-toxic and environmentally friendly adsorbent. The clay adsorbent prepared from natural clay (NC) by drying and milling then treated with diluted HCl before calcination to 600 °C. The structural and morphological properties of this modified clay are investigated by Fourier-transform infrared spectroscopy and scanning electron microscope. NC and modified clay at 600 °C (MC600) were applied for hexavalent chromium, Cr(VI), removal from aqueous media via batch adsorption facility. According to the experimental results, the adsorption capacity for chromium removal was calculated (14.3 mg g −1) with a removal efficiency reached to 66% after 90 min of equilibrium time. The sorption matrix indicated that Cr(VI) removal is following the pseudo-second order kinetic model. The experimental data are well fitted with Freundlich isotherm model and the adsorption process is suggested to follow a chemisorption and favourable uptake. The clay reusability was also tested and the outcomes suggested that MC600 had good potential as an economic adsorbent for chromium removal from contaminated water. According to this finding, modified NC is an effective adsorbent for direct Cr(VI) removal from aqueous media and the clay material is signified as an efficient treatment technology can also be adapted to heavy metal removal in wastewater treatment applications and could replace the commercially available adsorbents.

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Section: Introductionmentioning

confidence: 99%

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Ashour

Tony

2020

SN Appl. Sci.

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“…However, existing earth bricks do not demonstrate good compressive strength. Niroumand et al conducted compressive strength tests to check the influence of nano-clays on earth bricks [46]. Nano-clays are considered to be layered mineral silicates of nanoparticles and the use of varying nanoparticles in bricks is dependent on the chemical makeup of the brick.…”

Section: Nanoparticles In Construction Materialsmentioning

confidence: 99%

“…Nano-clays are considered to be layered mineral silicates of nanoparticles and the use of varying nanoparticles in bricks is dependent on the chemical makeup of the brick. The results show that a 5% inclusion of nano-clay can develop a compressive strength 4.8 times that of normal clay bricks [46]. Over the life of the brick material, the nano-clay modifier prevails as the more sustainable material when compared against normal clay bricks.…”

Section: Nanoparticles In Construction Materialsmentioning

confidence: 99%

Nanoparticles in Construction Materials and Other Applications, and Implications of Nanoparticle Use

et al. 2019

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Nanoparticles are defined as ultrafine particles sized between 1 and 100 nanometres in diameter. In recent decades, there has been wide scientific research on the various uses of nanoparticles in construction, electronics, manufacturing, cosmetics, and medicine. The advantages of using nanoparticles in construction are immense, promising extraordinary physical and chemical properties for modified construction materials. Among the many different types of nanoparticles, titanium dioxide, carbon nanotubes, silica, copper, clay, and aluminium oxide are the most widely used nanoparticles in the construction sector. The promise of nanoparticles as observed in construction is reflected in other adoptive industries, driving the growth in demand and production quantity at an exorbitant rate. The objective of this study was to analyse the use of nanoparticles within the construction industry to exemplify the benefits of nanoparticle applications and to address the short-term and long-term effects of nanoparticles on the environment and human health within the microcosm of industry so that the findings may be generalised. The benefits of nanoparticle utilisation are demonstrated through specific applications in common materials, particularly in normal concrete, asphalt concrete, bricks, timber, and steel. In addition, the paper addresses the potential benefits and safety barriers for using nanomaterials, with consideration given to key areas of knowledge associated with exposure to nanoparticles that may have implications for health and environmental safety. The field of nanotechnology is considered rather young compared to established industries, thus limiting the time for research and risk analysis. Nevertheless, it is pertinent that research and regulation precede the widespread adoption of potentially harmful particles to mitigate undue risk.

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“…Il caolino viene considerato in alcuni casi un nanomateriale essendo formato da "fogli" di spessore nanometrico sovrapposti [29][30]; diversi sono gli studi condotti anche sulle proprietà igrotermiche del materiale, anche se in misura minore rispetto a quelli sopra indicati [31][32].…”

Section: L'attuale Ricerca Sulla Terra Crudaunclassified

Sustainable Architecture: The Eco-Efficiency Earth Construction

Sposito¹,

Scalisi²

2017

EJSD

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Abstract:The appropriate choice of building materials can contribute decisively to reduce the energy consumption of the building sector. The increasing worries for the environmental impact of construction materials is witnessed by a lot of studies The mentioned worries has brought again the attention towards natural materials. The use of more sustainable construction materials and construction techniques represent a major contribution to the eco-efficiency of the construction industry and thus to a more sustainable development. Within this frame the renewed interest for a natural material such as the rammed earth is included; the interest has been in continuous growth from the 80s till today. The rammed earth's advantages regarding these requirements are evident: the resource is available in great amounts, the energy needed for extraction, transformation and production of the material is very low and it is a wholly recyclable material. Besides these benefits, the interest is due to its high thermal inertia and hard hygroscopic properties.Keywords: earth construction, sustainability, architecture Introduzione 1Secondo la definizione della Bruntland Commission, lo sviluppo sostenibile consiste nel cercare di soddisfare i bisogni del presente senza compromettere la possibilità delle genera-zioni future di soddisfare i propri bisogni [1]. Il termine sostenibilità, utilizzato inizialmente per definire più eque dinamiche di sviluppo economico, è rapidamente diventato di uso comune ed è stato via via impiegato per caratterizzare non solo il modello di sviluppo, ma anche le singole azioni o situazioni in cui tale modello si applica e si concretizza, da produzione sostenibile a mercato sostenibile, fino a edificio sostenibile (sustainable building): un edificio a cui si chiede di evitare l'impiego di materiali inquinanti, di privilegiare i materiali organici naturali, di utilizzare elementi riciclati, di limitare il ricorso a combustibili fossili, di ridurre la produzione di rifiuti e il consumo energetico nella fase di esercizio.Il settore dell'edilizia ha da diverso tempo mostrato un particolare interesse per le questioni legate alla sostenibilità ambientale e all'efficienza energetica, non solo attraverso l'utilizzo di tecnologie e materiali innovativi, ma anche con la reintroduzione di sistemi di costruzione che utilizzano materiali naturali e tradizionali. L'impiego della terra cruda come materiale da costruzione contemporaneo risponde a questi requisiti. Costruire con la terra significa ripensare, sia a livello locale sia a livello globale, l'impiego delle risorse del nostro pianeta; difendere il diritto di mettere in opera un materiale da costruzione naturale ed ecologico, abbondante, facilmente disponibile e accessibile al

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The Influence of Nano-clays on Compressive Strength of Earth Bricks as Sustainable Materials

Cited by 43 publications

References 11 publications

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Eco-friendly removal of hexavalent chromium from aqueous solution using natural clay mineral: activation and modification effects

Nanoparticles in Construction Materials and Other Applications, and Implications of Nanoparticle Use

Sustainable Architecture: The Eco-Efficiency Earth Construction

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