Use of sludge ash from drinking water treatment plant in hydraulic mortars

González, Kevin Bohórquez; Pacheco, Emmanuel; Guzmán, Andrés; Avila, Yoleimy; Cano, H.; Forero, Javier A.

doi:10.1016/j.mtcomm.2020.100930

Cited by 20 publications

(8 citation statements)

References 27 publications

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“…The results showed that the mortar sample's compressive strength was improved when no more than 15% of the cement was replaced with alum sludge ash (ASA). Also, Bohórquez González et al (2020) showed a comparable 28-day compressive strength to reference samples when 10% ASA was used to replace cement. On the other hand, Wang et al (2018) added alum sludge as a sand replacement in a cement-based material, and the results exhibited that the sludge addition resulted in a long setting time and low compressive strength.…”

Section: Introductionmentioning

confidence: 82%

How CO2 Curing Can Turn Alum Sludge Into Construction Material

Zhuge¹,

Chow²,

Keegan³

et al. 2021

Water e-Journal

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Alum sludge is produced as a by-product of drinking water treatment processes when aluminium sulfate is used as a coagulant. For the last decade, sludge production has increased significantly with increasing demand for drinking water due to population growth, and a green and economic management strategy is needed for this sludge. Based on our recent studies, alum sludge is a feasible substitute to replace either sand or cement in concrete blocks, which could be an efficient way to dispose of and reuse the sludge as raw material for this concrete product. For sand replacement, oven-dried sludge may deteriorate the mechanical and durability performance of concrete blocks due to its organic content hindering the cement hydration. An advanced technology, named CO2 curing, can improve the performance of sludge-derived concrete, e.g., compressive strength and resistance to sulfate attack. Also, the CO2 curing method has benefits for recycling of the abundant CO2 in the ambient environment. For cement replacement, grinding and calcining procedures have to be applied to eliminate the organic content and activate the pozzolanic activity of sludge. The obtained results show that a maximum of 10% cement can be replaced by alum sludge ash without compromising the mechanical performance of concrete blocks. This paper gives a summary of the latest alum sludge application studied by our research team.

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Section: Introductionmentioning

confidence: 82%

How CO2 Curing Can Turn Alum Sludge Into Construction Material

Zhuge¹,

Chow²,

Keegan³

et al. 2021

Water e-Journal

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“…Es viable utilizar el concreto con un 15% de reemplazo de lodo aluminoso y concuerda con los reportados por Liu et al, (2020) y Bohórquez et al, (2020) quienes evidencian un aumento en la resistencia a la compresión hasta porcentajes de lodo aluminoso de (5 y 15%) de la misma manera evidenciaron una disminución en la resistencia a la compresión para los porcentajes más alto. Los porcentajes de adición del 15% presentaron los valores máximos de resistencia a la compresión, superando los valores del concreto de referencia (100% de cemento); contrario a las demás adiciones donde tiende a disminuir.…”

Section: Discussionunclassified

“…Resistencia a la comprensión (kg / cm 2 ) Referencias 5,10 0.48-51.40 (Fontes et al, 2016) 5,10 5.00-20.00 (De Carvalho et al, 2019) 10,30 16.20-28.42 (Bohórquez et al, 2020) 20,30,40,70 49.30 -87.11 (Cremades et al,2018 5,15,20 4.10-6.43 (Fuentes et al,2019) 20,30,40,50 19.90 -22.60 (Danish et al,2020) 5,10,15,20 4.13 -48.69 (Liu et al,2020 10,20,30 0.15 -0.31 (Rebolledo y Restrepo 2019) 5,10,15,20 83.00 -248.30 (Rabie 2016) 5,10,20 35.20-76.40 (Ahmad et al, 2018 En la Tabla 6 se evidencia los porcentajes del 10% cumplen con la norma para su uso como material de construcción no estructural y estructural ASTM-C129 y ASTM-C90; según las investigaciones realizadas por Fontes et al, (2016), Danish et al, (2020), y Rebolledo y Restrepo (2019), se recomienda tener en cuenta este porcentaje en futuras investigaciones para revisar si es posible obtener mejores resultados en la resistencia a la compresión y maximizar las demás propiedades.…”

Section: Porcentaje De Adición (%)unclassified

“…En las últimas décadas, la alta demanda de materiales de construcción a un ritmo y escala sin precedentes con tendencias a continuar (Bohórquez et al, 2020;Medeiros et al, 2018), es una de las principales motivaciones para mejorar en productividad, competitividad y sostenibilidad ambiental en el sector de la construcción con nuevos paradigmas de economía circular (De Carvalho et al, 2019;Durante et al, 2018) como respuestas a los grandes desafíos globales de escasez de recursos ante escenarios de sobreexplotación, haciendo énfasis en la gestión eficiente de los materiales, orientada a reajustar los modelos de desarrollo, en forma útil y oportuna.…”

Section: Introductionunclassified

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Análisis de las relaciones lodo cemento como material de construcción no estructural

2021

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La presente investigación evaluó las condiciones óptimas de uso de lodo aluminoso, de un sistema de tratamiento de agua potable, como sustituto parcial del cemento para su uso en la fabricación de materiales de construcción no estructurales. Se prepararon mezclas estándar de lodo aluminoso (5, 10, 15 y 20%) con concreto. A los 7, 28 y 42 días de curado, se realizaron análisis de granulometría, fluorescencia de rayos X, materia orgánica, humedad, resistencia a compresión y absorción. Los resultados registraron diferencias significativas con variaciones de resistencia a la compresión entre 2.60 a 7.70 Mpa. Las mezclas del 15 y 20% fueron las únicas que cumplieron con los límites establecidos para materiales de construcción no estructural de la norma ASTM-C129. Se concluye que la introducción de lodo aluminoso (15 y 20%) como sustituto del cemento no deteriora la resistencia mecánica del material.

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“…The use of construction materials, for example; wood, cement, fine and coarse aggregate based on the raw material that nature provides, have been produce environmental problems in the world. Consequently, it is important to develop in the area of construction new materials sustainability that have the ability to offer performance compared to appearance, structural properties and durability [37], [38], [39], [40].…”

Section: B Green Innovation Applications In the Construction Industrymentioning

confidence: 99%

Green Innovation at the industrial level: A systematic Review

Cuadro¹,

Lobo²,

Arrieta³

et al. 2019

IJMSOR

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The Green innovation describes to the evolution of humanity toward capacity of invention to technological and environmental change for cleaner production and sustainable development. The existing literature about this concept is recent and no systematic review of the literature on the topic. The objective of this study is to synthesize the existing literature on Green innovation and identifies concepts and applications in the industries, based on the specialized search - Scopus database. The systematic literature review was conducted, including 24 articles. Despite of the research the relationship between green innovation in companies remains unclear but in the construction sector the green innovation can be a potential sector with ability to lead the process sustainable and responsibilities to the environment since conception, construction, use and disposal the structure.

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Use of sludge ash from drinking water treatment plant in hydraulic mortars

Cited by 20 publications

References 27 publications

How CO2 Curing Can Turn Alum Sludge Into Construction Material

How CO2 Curing Can Turn Alum Sludge Into Construction Material

Análisis de las relaciones lodo cemento como material de construcción no estructural

Green Innovation at the industrial level: A systematic Review

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