Sintering effect on cement bonded sewage sludge ash

Chen, Ching‐Ho; Chiou, Ing–Jia; Wang, Kuen‐Sheng

doi:10.1016/j.cemconcomp.2005.09.003

Cited by 36 publications

(14 citation statements)

References 4 publications

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“…A group of the same authors [25,38,98,152] have used SSA in bulk quantities (up to 80% by weight of cement) in ''lightweight foamed materials" mixes. The process of casting the cubes, de-moulding, curing and cutting away any excess bulging, is symptomatic of aerated concrete production rather than foamed concrete, which typically involves the addition of premade foam to a base mix.…”

Section: Aerated Concretementioning

confidence: 99%

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Sewage sludge ash characteristics and potential for use in concrete

Lynn

Dhir

Ghataora

et al. 2015

Construction and Building Materials

218

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Section: Aerated Concretementioning

confidence: 99%

“…Although of filler fineness, the material has been used as replacement of cement [25,38,98,152] and PFA [153] to enhance the lightweight characteristics and thermal properties, rather than for its potential pozzolanic activity.…”

Section: Aerated Concretementioning

confidence: 99%

Sewage sludge ash characteristics and potential for use in concrete

Lynn

Dhir

Ghataora

et al. 2015

Construction and Building Materials

218

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“…• C [26] may lead to the formation of high [35], moderate [36], or less [37] reactive sewage sludge ash and as a result enhances or reduces the workability of cementitious material. Hence, the aim of this study is to clarify the effect of incineration temperature on the microstructure and pozzolanicity of sewage sludge ash.…”

Section: Sfmentioning

confidence: 99%

Evaluation of the Pozzolanic Activity of Sewage Sludge Ash

Tantawy

El‐Roudi

Abdalla

et al. 2012

ISRN Chemical Engineering

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Raw sewage sludge was characterized by XRD, FTIR, SEM, and TGA techniques and incinerated in temperature range 650-950• C for 2 h. The effect of incineration temperature on the microstructure and pozzolanic activity of the resultant ash was investigated by techniques mentioned above as well as Chapelle test. It was concluded that incineration of sewage sludge affects the microstructure and pozzolanic activity of the resultant ash. During incineration at temperatures lower than 800• C, amorphous silica captures fixed carbon resulting from incomplete combustion conditions whereas at higher temperatures crystallization of amorphous silica was enhanced. Hydration products formed from hydrothermal treatment of silica fume with lime is amorphous whereas that of sewage sludge ash is fibrous. Hence, incineration of sewage sludge ash must be optimized at 800• C to preserve the pozzolanic activity of the resultant ash.

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“…SSA fineness has been observed to have a significant effect on both the mechanical strength and workability of concrete (25)(26)(27). SSA has also been applied as a lightweight material in thermal and acoustic insulation (28). Studies on its compatibility with a variety of types of cement in connection with mechanical strength (29,30) concluded that given its physical properties, it is apt for inclusion in the preparation of portland cement-based materials.…”

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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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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Sintering effect on cement bonded sewage sludge ash

Cited by 36 publications

References 4 publications

Sewage sludge ash characteristics and potential for use in concrete

Sewage sludge ash characteristics and potential for use in concrete

Evaluation of the Pozzolanic Activity of Sewage Sludge Ash

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

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