Technological and environmental behavior of sewage sludge ash (SSA) in cement-based materials

Cyr, Martin; Coutand, Marie; Clastres, Pierre

doi:10.1016/j.cemconres.2007.04.003

Cited by 258 publications

(166 citation statements)

References 48 publications

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“…Previous studies have shown that mortars made with SSA exhibit good mechanical properties (20)(21)(22). The improvement observed can be attributed to the pozzolanic activity of SSA (6,23), although recent research on re-used material showed that, compared to other known pozzolans, its pozzolanicity is weak at best (24). SSA fineness has been observed to have a significant effect on both the mechanical strength and workability of concrete (25)(26)(27).…”

Section: Introductionmentioning

confidence: 96%

“…Such waste commonly ends up in fertilisers (65-80%), sanitary landfills (8-20%) or incinerators to reduce its volume. Around 4-10% of the total sludge is incinerated, but the trend is to raise European mean of 20-25% (1,5,6). In sludge with a 25-30% solids content, incineration reduces the volume by 90%, greatly facilitating management of this waste.…”

Section: Introductionmentioning

confidence: 99%

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Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

Pérez-Carrión¹,

Baeza-Brotons²,

Payá³

et al. 2014

Mater. construcc.

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ABSTRACT:The present study explored the technological feasibility of re-using sewage sludge ash (SSA) as a Portland cement replacement in commercially manufactured pre cast concrete blocks. The blocks analysed were made to the guidelines laid down in Spain's National Plan for Waste Water Treatment Plant Sludge, 2001Sludge, -2006, and European Union specifications (CE marking) for such products. Performance was compared in three families of blocks, with 0, 10 and 20% SSA. The findings proved that SSA is apt for pre cast concrete block manufacture and that, in addition to the economic and environmental benefits afforded, its use would improve certain of the properties of conventional block. RESUMEN: Uso potencial de ceniza de lodo de depuradora (CLD) como sustitución de cemento en bloques dehormigón prefabricados.El objetivo de esta investigación es estudiar el uso potencial de las cenizas de lodos de depuradora (CLD), como sustitución del cemento Portland en bloques de hormigón prefabricados, de forma que se pueda lograr una revalorización de este material de desecho mediante este procedimiento. La metodología utilizada en este trabajo se rige por las directrices del Plan Nacional Español de Lodos de Aguas Residuales de 2001-2006, y por las exigencias del Consejo Europeo (marcado CE), que es obligatorio para este tipo de productos. Se han utilizado dos niveles de sustitución de cemento (10% y 20%), y todos los resultados han sido referidos a las muestras control. Los resultados obtenidos muestran que es posible utilizar una sustitución parcial del cemento por CLD, en la fabricación de bloques de hormigón prefabricados, y por lo tanto, se pueden conseguir beneficios económicos y ambientales, así como la mejora de una serie de propiedades.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

Pérez-Carrión¹,

Baeza-Brotons²,

Payá³

et al. 2014

Mater. construcc.

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“…Cyr et al [15] indicates that adverse effect of adding of ISSA on early strengths of mortar in later phases of setting loses importance (adverse effect on strength after 28 days is considerably reduced in relation to strength after 7 days).…”

Section: Issa Characteristicsmentioning

confidence: 99%

“…The most frequently used type is the fluidized bed furnace [2,12,15,17,27]. Other types include the modular incinerator [11] and the electrical muffle furnace [22].…”

Section: Incineration Of Sludge and Issa Characteristics 21 Incineramentioning

confidence: 99%

“…Partial substitution of Portland cement by ISSA influences the workability and strength development of cement mortar [2,11,12,15,17,19].Using of ash as a substitute for a part of cement results in higher requirements for water, with simultaneous reduction of workability quality and longer setting time. Reduction of mortar workability, even at lower ratios of cement substitution by ISSA, is caused by irregular morphology of ISSA particles.…”

Section: Issa Characteristicsmentioning

confidence: 99%

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Use of incinerated sewage sludge ash in cement mortars: case study in Croatia

2017

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Original scientific paper In the paper an experimental research has been carried out regarding the possibility for the use of incinerated sewage sludge ash (ISSA) in the production of cement mortars with partial cement replacement. Different mixtures of cement mortar have been investigated, with comparison of its basic characteristics with and without certain amounts of added ISSA that was incinerated at the temperature of 800 °C. Additionally, the influence of the additives (metakaolin and silicon dust) was also investigated with the purpose to improve the physical characteristics of mortars. Altogether 177 specimens of cement mortar were investigated, with 9 different mixtures. In this research the sewage sludge from the Zagreb wastewater treatment plant was used. Results have shown satisfying physical and mechanical characteristics of mortars with added ISSA (workability, setting time, flexural and compressive strength) which brings to conclusion that use of ISSA in production of cement mortars seems possible and justified.Keywords: cement mortar; incineration; ISSA; sewage sludge; wastewater Uporaba pepela dobivenog spaljivanjem mulja u proizvodnji cementnog morta: pilot projekt u Hrvatskoj Izvorni znanstveni članak U ovom radu je provedeno istraživanje mogućnosti i opravdanosti uporabe mulja s uređaja za pročišćavanje otpadnih voda na način da se pepeo dobiven spaljivanjem mulja ugrađuje u cementni mort kao sirovina (zamjena dijela cementa). U radu su provedena ispitivanja na cementnom mortu, pri čemu su razmatrane usporedbe osnovnih svojstava mješavina morta bez dodatka pepela i s dodatkom određenih udjela pepela dobivenog spaljivanjem mulja na temperaturi 800 °C. Dodatno je ispitivan i utjecaj dodatka aditiva (metakaolina i silicijske prašine), s ciljem poboljšanja fizikalnih karakteristika morta. Ukupno je proizvedeno i ispitano 177 uzoraka cementnog morta s 9 različitih mješavina. Za potrebe ovog istraživanja rabljen je mulj dobiven na uređaju za pročišćavanje otpadnih voda u Zagrebu. Dobiveni rezultati s dodatkom pepela pokazali su zadovoljavajuća svojstva što navodi na zaključak da je u pogledu ispitivanih svojstava (obradljivost, vrijeme vezivanja, čvrstoća na savijanje i tlačna čvrstoća) moguća i opravdana uporaba mulja u proizvodnji cementnog morta.

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Thermal‐Chemical Treatment of Sewage Sludge Toward Enhanced Energy and Resource Recovery

Guo

et al. 2021

Sustainable Resource Management, Volume I

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Technological and environmental behavior of sewage sludge ash (SSA) in cement-based materials

Cited by 258 publications

References 48 publications

Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks

Use of incinerated sewage sludge ash in cement mortars: case study in Croatia

Thermal‐Chemical Treatment of Sewage Sludge Toward Enhanced Energy and Resource Recovery

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