Innovative Civil Engineering Material from Sewage Sludge: Biocement and Its Use as Blended Cement Material

Tay, Joo‐Hwa; Show, Kuan‐Yeow

doi:10.1061/(asce)0899-1561(1994)6:1(23)

Cited by 3 publications

(6 citation statements)

References 11 publications

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“…Input data regarding other processes, such as Portland cement production, coal ash treatment and rice husk combustion, were constant in literature (Chen et al , 2010; Akwo, 2008; Houillon and Jolliet, 2005; USA Department of Energy – Energy Information Administration, 2008; Kasmaprapruet et al , 2009; Abo-El-Enein et al , 2013; Siddique, 2008; Moraes et al , 2010). Data regarding the quantities of components/additives used in each concrete were experimentally verified by Tay and Show (1994), Wang et al (2009) and Afolayan et al , 2015).…”

Section: Resultsmentioning

confidence: 92%

“…This was achieved by ensuring that the quantities of additives used to replace cement did not significantly affect the concrete compressive strength. Tay and Show (1994) demonstrated that replacing up to 30 per cent of cement with sewage sludge did not deteriorate the strength. The resulting biocement had 28- and 90-day compressive strengths of 20.14 N/mm 2 and 26.84 N/mm 2 , respectively, which meets the minimum American Concrete Institute (ACI) 318 Standard requirement for structures, such as exterior walls, stairs, patios, basement slabs and basement walls (International Code Council, 2015).…”

Section: Methodsmentioning

confidence: 97%

“…A combination of sludge and limestone are incinerated at 1000°C for 4 hours for producing sludge-based bioconcrete (Tay and Show, 1994). Proportionality allocations in sludge-based bioconcrete production were obtained from literature.…”

Section: Methodsmentioning

confidence: 99%

“…Proportionality allocations in sludge-based bioconcrete production were obtained from literature. According to Tay and Show (1994), 50 per cent sewage sludge and 50 per cent limestone can replace 30 per cent of cement. According to Wang et al (2009), 75 per cent sewage sludge and 25 per cent coal ash can completely replace aggregates.…”

Section: Methodsmentioning

confidence: 99%

“…Studies suggest that a mixture of sludge and limestone in equal proportions heated at 1000°C can produce biocement suitable for masonry work. Furthermore, the biocement produced can replace up to 30 per cent of Portland cement in mortar (Tay and Show, 1994). Sewage sludge can also be used in combination with waste additives, such as waste glass (Tuan et al , 2013), sludge ash (Chiou et al , 2006) and clay-rich sediment (González-Corrochano et al , 2014), to manufacture lightweight aggregates.…”

Section: Introductionmentioning

confidence: 99%

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Comparative process-based life-cycle assessment of bioconcrete and conventional concrete

Shahandashti

2017

JEDT

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Purpose Bioconcrete is widely believed to be environmentally beneficial over conventional concrete. However, the process of bioconcrete production involves several steps, such as waste recovery and treatment, that potentially present significant environmental impacts. Existing life-cycle assessments of bioconcrete are limited in the inventory and impact analysis; therefore, they do not consider all the steps involved in concrete production and the corresponding impacts. The purpose of this study is to extensively study the cradle-to-gate environmental impacts of all the production stages of two most common bioconcrete types (i.e. sludge-based bioconcrete and cement kiln dust-rice husk ash (CKD-RHA) bioconcrete) as opposed to conventional concrete. Design/methodology/approach A cradle-to-gate life-cycle assessment process model is implemented to systematically analyze and quantify the resources consumed and the environmental impacts caused by the production of bioconcrete as opposed to the production of conventional concrete. The impacts analyzed in this assessment include global warming potential, ozone depletion potential, eutrophication, acidification, ecotoxicity, smog, fossil fuel use, human toxicity, particulate air and water consumption. Findings The results indicated that sludge-based bioconcrete had higher levels of global warming potential, eutrophication, acidification, ecotoxicity, fossil fuel use, human toxicity and particulate air than both conventional concrete and CKD-RHA bioconcrete. Originality/value The contribution of this study to the state of knowledge is that it sheds light on the hidden impacts of bioconcrete. The contribution to the state of practice is that the results of this study inform the bioconcrete production designers about the production processes with the highest impact.

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Section: Resultsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative process-based life-cycle assessment of bioconcrete and conventional concrete

Shahandashti

2017

JEDT

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Biocement production from silicon-rich plant residues: Perspectives and future potential in Canada

Hosseini¹,

Shao²,

Whalen³

2011

Biosystems Engineering

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Leachability of Fired Clay Brick Incorporating with Sludge Waste from Mosaic Industry

Jamil

Rahim

2014

MSF

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Abstract. The amount of sludge wastes from industrial, mining, domestic agriculture activities are about 60200 tons per year. The increasing of the waste will have significant impact towards environment and energy conservation. Many attempts have been made to incorporate sludge waste into brick for example fly ash sludge, sewage sludge, water sludge and ceramic sludge and advantages on the properties have been found but heavy metals leachibility will be the main concerned. Therefore, sludge waste is a potential alternative to convert into useful products as a building material that can alleviate the disposal problems. Therefore, in this study the characteristics of heavy metals were determined by using XRF. Four different mixing ratios of mosaic sludge waste at (0o/o, lyo,5oh, and 10%) were incorporated into fired clay brick. Each brick was fired in a heat controlled fumace at elevated temperatures of 1050C. The characteristic of heavy metals from the sludge waste were determined by XRF and the result show that the sludge waste is high in iron (Fe) and Zicronium (Zr) followed by Barium (Br), Chromium (Cr), Cadmium (Cd), Copper (Cu) andZinc (Zn). The leachability of heavy metals from the manufactured mosaic sludge brick were determined by using toxicity characteristic leachibility procedure (TCLP) and the results demonstrated that the culprit heavy metals were all complied to USEPA(1996) and EPAV(2005a).

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Innovative Civil Engineering Material from Sewage Sludge: Biocement and Its Use as Blended Cement Material

Cited by 3 publications

References 11 publications

Comparative process-based life-cycle assessment of bioconcrete and conventional concrete

Comparative process-based life-cycle assessment of bioconcrete and conventional concrete

Biocement production from silicon-rich plant residues: Perspectives and future potential in Canada

Leachability of Fired Clay Brick Incorporating with Sludge Waste from Mosaic Industry

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