The impact of cooling water types on the cement clinker properties

Shafeek, Ahmed M.; Salah, Hamdy; Shehata, Nabila; Saddek, Amr B.

doi:10.1016/j.ejpe.2017.04.003

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Most of the observed differences are related to water consumption, since electricity consumption for cements which have the same Rck is not appreciable [40]. The realization of closed rings circuits permits to substantially reduce water consumption, during the cooling phase [41]. Plant 2 has the best results, also related to the reuse of rainwater in the production cycle, while companies 3 and 4 have the worst performances because they did not implement measures to recycle and reduce water consumption.…”

Section: Resultsmentioning

confidence: 99%

Environmental, Human Health and Socio-Economic Effects of Cement Powders: the Multicriteria Analysis as Decisional Methodology

Moretti¹,

Mascio²,

Bellagamba

2017

Preprint

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The attention to sustainable-related issues has grown fast in recent decades. The experience gained with these themes reveals the importance of considering this topic in the construction industry, which represents an important sector in the world. This work consists on conducting a multicriteria analysis of four cement powders, with the objective of calculating and analysing the environmental, human health and socio-economic effects of their production processes. The economic, technical, environmental and safety performances of the examined powders result from official, both internal and public, documents prepared by the producers. The Analytic Hierarchy Process permitted to consider several indicators (i.e. environmental, human health related and socio-economic parameters) and to conduct comprehensive and unbiased analyses which gave the best, most sustainable cement powder. As assumed in this study, the contribution of each considered parameter to the overall sustainability has a different incidence, therefore the procedure could be used to support on-going sustainability efforts under different conditions. The results also prove that it is incorrect to consider only one parameter to select the 'best' cement powder, but several impact categories should be considered and analysed if there is an interest for pursuing different, often conflicting interests.

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Section: Resultsmentioning

confidence: 99%

Environmental, Human Health and Socio-Economic Effects of Cement Powders: the Multicriteria Analysis as Decisional Methodology

Moretti¹,

Mascio²,

Bellagamba

2017

Preprint

View full text Add to dashboard Cite

show abstract

“…Most of the observed differences are related to water consumption, since electricity consumption for cements which have the same R ck is not appreciable [ 47 ]. The realization of closed rings circuits permits to substantially reduce water consumption, during the cooling phase [ 48 ]. Plant 2 has the best results, also related to the reuse of rainwater in the production cycle, while companies 3 and 4 have the worst performances because they did not implement measures to recycle and reduce water consumption.…”

Section: Resultsmentioning

confidence: 99%

Environmental, Human Health and Socio-Economic Effects of Cement Powders: The Multicriteria Analysis as Decisional Methodology

Moretti

Mascio

Bellagamba

2017

IJERPH

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The attention to sustainability-related issues has grown fast in recent decades. The experience gained with these themes reveals the importance of considering this topic in the construction industry, which represents an important sector throughout the world. This work consists on conducting a multicriteria analysis of four cement powders, with the objective of calculating and analysing the environmental, human health and socio-economic effects of their production processes. The economic, technical, environmental and safety performances of the examined powders result from official, both internal and public, documents prepared by the producers. The Analytic Hierarchy Process permitted to consider several indicators (i.e., environmental, human health related and socio-economic parameters) and to conduct comprehensive and unbiased analyses which gave the best, most sustainable cement powder. As assumed in this study, the contribution of each considered parameter to the overall sustainability has a different incidence, therefore the procedure could be used to support on-going sustainability efforts under different conditions. The results also prove that it is not appropriate to regard only one parameter to identify the ‘best’ cement powder, but several impact categories should be considered and analysed if there is an interest for pursuing different, often conflicting interests.

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“…Beside their key role in reducing negative environmental impacts, nanomaterials are used as additives to improve product characteristics. Nanotechnologies involving Fe and Al oxalates, Ag, TiO 2 , SiO 2 , and ZnO are widely implemented in industry (Schmid and Riediker 2008). The addition to or replacement of cement with nanomaterial, at an optimum percentage, can meaningfully improve the cement's mechanical properties and microstructure (Sadeghi-Nik et al 2017) while minimizing negative environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

“…The degree of whiteness or brightness is an essential property of WPC. The production of white cement requires low Fe 2 O 3 content, so the mix design requires a flux agent or high temperature, reaching 1420-1450 °C (Moresová et al 2001;Shafeek et al 2018 (Chen et al 2012;Kim et al 2014;Labrincha et al 2014;Polat et al 2017;Rashad 2013a, b;Singh et al 2018;Tokarský et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Influence of ZnO nanoparticle ratio and size on mechanical properties and whiteness of White Portland Cement

et al. 2020

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The impact of nanotechnology on the cement industry has been extensively studied. Much work remains needed to improve product quality, decrease cost, and minimize the negative environmental impact. The present study explores the influence of ZnO nanoparticles on physical, chemical, and mechanical properties of White Portland Cement (WPC). Zinc oxide nanoparticles were prepared by simple ball-milling to reach average particle sizes of 70, 37, 27, and 24 nm. For each of the four size groups, ZnO nanoparticles were added to WPC at each of four concentrations (0.1, 0.4, 0.7, and 1.0 wt%). Whiteness, setting time, expansion, and compressive strength of resulting mortars were investigated. The crystal structure and morphology of mortars were respectively characterized using X-ray diffraction and scanning electron microscopy. Hydration progress was inspected using Fourier-transform infrared spectrometry. The results show that addition of ZnO to WPC pastes increases the amount of water required for normal consistency and setting time. The addition of 37 nm ZnO nanoparticles to WPC mortars at a specific weight percentage of 0.4% ZnO enhanced compressive strength at 28 days by up to 28% via filler effects. The characterizations and physicomechanical parameters for high-ZnO (1.0 wt%) mortar indicate less hydration products before 28 days but improved at 28 days.

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The impact of cooling water types on the cement clinker properties

Cited by 5 publications

References 12 publications

Environmental, Human Health and Socio-Economic Effects of Cement Powders: the Multicriteria Analysis as Decisional Methodology

Environmental, Human Health and Socio-Economic Effects of Cement Powders: the Multicriteria Analysis as Decisional Methodology

Environmental, Human Health and Socio-Economic Effects of Cement Powders: The Multicriteria Analysis as Decisional Methodology

Influence of ZnO nanoparticle ratio and size on mechanical properties and whiteness of White Portland Cement

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