Performance of mortars with the addition of septic tank sludge ash

Ingunza, Maria del Pilar Durante; Camarini, Gladis; Costa, Felipe Murilo Silva da

doi:10.1016/j.conbuildmat.2017.11.053

Cited by 12 publications

(6 citation statements)

References 17 publications

(26 reference statements)

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“…The authors concluded that both temperatures contribute to the SSA becoming reactive enough to be pozzolanic, a factor directly reflected in the increase in the flexural strengths and the adhesion of mortars, with emphasis on 700°C, which produces more dehydroxylated amorphous structure, that is, more reactive, so the resistance values are higher for the temperature of 700°C. The percentage of 20%, for both calcination temperatures, was the best for both physical parameters studied, a value in line with the work of Ingunza, Camarini & Costa (2018), as well as, the values of the tests fit with the pertinent standards for mortars in Brazil. Research, Society and Development, v. 10, n. 6, e25910615736, 2021 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v10i6.15736…”

Section: Sludge Aggregatessupporting

confidence: 83%

“…Source : Simoka, Reis & Boni (2016). Ingunza, Camarini & Costa (2018), when incorporating the sewage sludge ash (SSA), calcined at a temperature of 850°C for 3 hours, in mortar as a mineral addition, realized that the percentage of 20% is ideal for application to from a conjunctural analysis of all the parameters analyzed, corroborating even more satisfactory results when comparing the mortar without adding the SSA for axial compression tests (Figures 4 and 5). Cunha Oliveira, Chagas, Meira, Carneiro & Melo Neto (2020), evaluated the use of calcined SSA at 600°C and 700°C, incorporated in coating mortar in percentages of 10%, 20% and 30%, and evaluating the mixtures in terms of flexural strength (Figure 6), and adhesion to the masonry substrate (Table 1).…”

Section: Sludge Aggregatesmentioning

confidence: 73%

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Potentialities in the performance of coating mortars through the addition of sewage sludge ash

Oliveira

Chagas

Meira

et al. 2021

RSD

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Through environmental policies that provide a gradual discussion about the destination of the tailings produced in the most diverse industrial sectors, the sewage sludge is emphasized by the problematic destination arising from the amount of toxic compounds that compose it, compromising its disposal. Aiming to fulfill the sustainable role through the creation of mechanisms that favor the ecological coexistence between environment and human beings, it is possible through the use of construction materials, considered as conventional, the use of calcined sewage sludge as an enhancer of the properties of matrix materials cement, significantly improving its performance against mechanical stresses and degradation mechanisms. Based on the need to implement measures to mitigate environmental impacts through the production of eco-efficient materials, the ashes of sanitary sewage sludge as a partial substitute for Portland cement have now been used as an input in coating mortars. This substitution focuses on reducing the large volume of sludge generated by the Sewage Treatment Plants, as well as on the reduction in the consumption of cement, a large CO2 generator during its manufacturing process. It was observed that through the use of this calcined by-product applied in mortars, a relevant physical-mechanical performance in cementitious materials is ratified, that in comparison to the material without the use of it, better results are observed, resulting from the reactivity conferred to the sludge after the thermal degradation process, making it a pozzolana.

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Section: Sludge Aggregatessupporting

confidence: 83%

Section: Sludge Aggregatesmentioning

confidence: 73%

Potentialities in the performance of coating mortars through the addition of sewage sludge ash

Oliveira

Chagas

Meira

et al. 2021

RSD

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“…8d and 9 d). Other works show SA morphology as an irregular surface formed by angular particles with low sphericity [36]. Pospíšil et al [37] found microstructures with ettringite and portlandite crystals forming needle shapes, fibers or fan-shaped agglomerations, and the portlandite crystals forming shapes of boards or chips within a gap-free space.…”

Section: Discussionmentioning

confidence: 99%

“…The amorphous phases of quartz react with portlandite, resulting in the silica gel that is an expansive compound, source of several pathologies in concrete [34]. [35,36]. It is observed SA as off-white hemispherical particles in the concrete matrix (Figs.…”

Section: Discussionmentioning

confidence: 99%

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

González

Pacheco

Guzmán

et al. 2020

Materials Today Communications

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The present study investigated the use of sludge ash from water treatment plants as supplementary cementing material, elaborating hydraulic mortars with different levels of cement replacement by sludge ash (10 wt% and 30 wt%) and different temperatures of calcination (600°C and 800°C). Characterization of sludge ash and mortars includes XRF, XRD, particle size distribution by laser diffraction, compressive strength, and SEM-EDS. The results show that SiO 2 , Al 2 O 3, and Fe 2 O 3 compose 90 % of the sludge ash, and it has potential pozzolanic activity. It is evidenced that there is a significant influence of the variable ratio of sludge ash:cement in the compressive strength of the mortar cubes over other variables. Overall, this study showed that the sludge ash could be considered as a viable and sustainable alternative for the construction sector. Despite the benefits of the suggested replacement, the presence of amorphous SiO 2 requires a review of long-time chemical behavior.

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“…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

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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Performance of mortars with the addition of septic tank sludge ash

Cited by 12 publications

References 17 publications

Potentialities in the performance of coating mortars through the addition of sewage sludge ash

Potentialities in the performance of coating mortars through the addition of sewage sludge ash

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

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

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