Synthesis and characterization of cement clinker using recycled pulverized oyster and scallop shell as limestone substitutes

Her, Sungwun; Park, Taehoon; Zalnezhad, E.; Bae, Sung Chul

doi:10.1016/j.jclepro.2020.123987

Cited by 74 publications

(27 citation statements)

References 60 publications

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“…25 27 As the pulverized oyster and scallop shell powders were used to replace 100 wt% of limestone in the cement-clinker production, the oyster shell cement and scallop shell cement presented the clinker phases and hydrated products (C-S-H and portlandite) similar to that of commercial ordinary Portland cement. 28 The cement indicators for a mixture of oyster shell powder and alumina sludge calcined at 1450°C were equivalent to those of standard Portland cement. 29 Due to the high C3S phase content, the compressive strength was high after 28 days of hardening.…”

Section: Soil Amendmentmentioning

confidence: 96%

“…The density and strength of shells comprising calcite and aragonite are similar to those of limestone after pulverization and calcination, thereby shell wastes are suitable substitutes for limestone in the production of cement clinker 27 . As the pulverized oyster and scallop shell powders were used to replace 100 wt% of limestone in the cement‐clinker production, the oyster shell cement and scallop shell cement presented the clinker phases and hydrated products (C‐S‐H and portlandite) similar to that of commercial ordinary Portland cement 28 29 .…”

Section: Constructionmentioning

confidence: 99%

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Review of shell waste reutilization to promote sustainable shellfish aquaculture

Zhan

Wang

2021

Reviews in Aquaculture

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Shellfish aquaculture has developed rapidly, and the annual production of shell waste by‐products exceeds 10 million tons. The reutilization of shell waste is a severe problem in terms of environmental protection and the development of the circular economy. Due to its limited economic value, shell waste has generally been discarded or sent to landfill without any further processing and reutilization, thereby wasting resources and severely degrading the coastal ecosystem. This review summarizes recent research into the reutilization of shell waste, including applications in the fields of agriculture, construction, environmental protection, chemical production, food additives and biomaterials. Problems and strategies related to the reutilization of shell waste are analysed in order to provide technical support for the large‐scale and high value‐added utilization of shell waste.

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Section: Soil Amendmentmentioning

confidence: 96%

Section: Constructionmentioning

confidence: 99%

Review of shell waste reutilization to promote sustainable shellfish aquaculture

Zhan

Wang

2021

Reviews in Aquaculture

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“…The use of this material as a raw material in concrete should help in achieving environmental, technical and economic advantages. Studies have been carried out to study the possibility of the use of OS as fine aggregate, coarse aggregate and even as cement replacement in concrete and mortar [30][31][32][33][34]. Most of the previous studies were related to the effect of using OS as an aggregate on concrete properties.…”

Section: Introductionmentioning

confidence: 99%

Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements

et al. 2021

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The reactivity effect of calcium carbonate, present in ground oyster shells and limestone filler, on the formation of carboaluminate phases in ground granulated blast furnace slag blended cement pastes was reported in this paper. Six different binary and ternary blended cement pastes were prepared using ground granulated blast furnace slag, ground oyster shells and limestone filler with different replacement levels (from 5 to 35%). The carboaluminate formation was assessed and quantified directly using X-ray diffraction (XRD), and indirectly by following the aluminate phase’s reaction (heat flow) and consumed calcium carbonate using Isothermal Calorimetry (IC) and Thermogravimetric Analysis (TGA), respectively. Further, the overall reaction degree calculated based on TGA results and the compressive strength were determined to support the findings obtained. The results revealed that the calcium carbonate present in ground oyster shells is more reactive when compared to that present in limestone filler, where more formed hemi- and monocarboaluminate phases were observed in mixtures containing ground oyster shells. An enhancement in compressive strength and overall reaction degree was observed by adding 5% ground oyster shells as cement replacement.

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“…Using biochemical technology to prepare medicinal value of scallop extract from scallop viscera mass could be utilized to treat certain diseases. The variety of colors of the shells, which are crushed and ground to make powder, could be applied to decorate walls [9].…”

Section: Introductionmentioning

confidence: 99%

Application of Response Surface Methodology in Scallop Shelling

Lu¹,

Cai²,

Zhang³

et al. 2021

Preprint

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Shelling is a central and crucial step in the mechanized processing of scallops. However, current research on the peeling mechanism is insufficient, and a relatively complete theoretical system has not been established so far. This paper proposes an application of response surface methodology and the design of an experiment to provide and stimulate further research on the automation of scallop shucking. Effective factors on the binding force of scallops are evaluated and discussed in this paper. The relationship between responses with significant factors is established. By employing response surface methodology, mathematical regression model can be efficiently performed. This response model is applied to analyze the response surface contours and surface plots to estimate shelling performance by developing a better shucking process. At the same time, quadric model proposed is used not only for predicted optimal process parameters but also for process optimization, and enrich the theoretical system of shellfish shelling.

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Synthesis and characterization of cement clinker using recycled pulverized oyster and scallop shell as limestone substitutes

Cited by 74 publications

References 60 publications

Review of shell waste reutilization to promote sustainable shellfish aquaculture

Review of shell waste reutilization to promote sustainable shellfish aquaculture

Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements

Application of Response Surface Methodology in Scallop Shelling

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