Incorporation and substitution mechanism of cadmium in cement clinker

Wang, FaZhou; Shang, Dechen; Wang, Maoguo; Hu, Shuguang; Li, Yeqing

doi:10.1016/j.jclepro.2015.09.127

Cited by 32 publications

(12 citation statements)

References 33 publications

(34 reference statements)

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“…Wang, bu olayın hidratasyon sürecini gözlemleyerek ağır metallerin alit ve belit fazlarının reaktivitesini azalttığı ve bunun sonucunda da C-S-H jelinin ortalama zincir boyunun azaldığını belirlemiştir. Bu etki çimento ve beton dayanımlarını olumsuz etkilemektedir (Wang vd., 2016).…”

Section: Klinker İçerisindeki Ağır Metallerin İncelenmesi (Investigatunclassified

Çi̇mento Ve Uçucu Kül Bünyesi̇ndeki̇ Ağir Metalleri̇n Etki̇leri̇ni̇n Hi̇dratasyon Ve Çevre Sağliği Açisindan İncelenmesi̇

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Öztürk

Kaplan

2020

Mühendislik Bilimleri Ve Tasarım Dergisi

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Çimento, beton üretimi içine kullanılan kalsiyum esaslı bağlayıcıların başında gelmektedir. Ayrıca uçucu kül, yüksek fırın cürufu, silis dumanı gibi endüstriyel atıkların çimento yerine kullanımı da her geçen gün artmaktadır. Günümüzde uçucu kül gibi endüstriyel atıkların beton ve çimento sektöründe kullanılması ile çevresel problemler azaltılmaktadır. Ancak çimento ve uçucu kül bünyesinde Pb, Cu, Sn, Cr, As, Mo, V, Co ve Cd gibi insan sağlığı açısından zararlı olan ağır metaller bulunmaktadır. Ağır metaller, DNA parçalanması, kromozom bozuklukları, cilt lezyonları, solunum ve sinir siteminde kalıcı hasarlara yol açmaktadır. Fakat belirtilen ağır metaller C-S-H, CH, etrenjit, monosülfat gibi hidratasyon ürünleri tarafından bağlanmaktadır. Bu sayede insan ve ekosistem için zararlı olan uçucu kül gibi endüstriyel atıklar bertaraf edilmektedir.

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Section: Klinker İçerisindeki Ağır Metallerin İncelenmesi (Investigatunclassified

Çi̇mento Ve Uçucu Kül Bünyesi̇ndeki̇ Ağir Metalleri̇n Etki̇leri̇ni̇n Hi̇dratasyon Ve Çevre Sağliği Açisindan İncelenmesi̇

Kaplan

Öztürk

Kaplan

2020

Mühendislik Bilimleri Ve Tasarım Dergisi

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“…A field emission scanning electron microscope coupled with an energy-dispersive x-ray spectrometer (JSM-7800 FPRIME, JEOL, Japan) was used to obtain detailed observations of the morphology and element distribution of the clinkers [28].…”

Section: Element Distributions In Clinkersmentioning

confidence: 99%

Role of Municipal Sewage Sludge in Incorporating Cr, Ni, Cu, and Zn into Cement Clinker

Liu

Cao

et al. 2018

Pol. J. Environ. Stud.

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“…Meanwhile, a large number of secondary fuels (refuse-derived fuel) and raw materials (sludge, construction waste, etc.) are incorporated into the cement production process to mitigate the consumption of fossil fuels and high-grade natural limestone. , This solution is also of great significance to disposing hazardous wastes. − However, all these schemes catering sustainable green manufacturing are acceptable only on the condition that the related doping effects can be well understood and controlled. A typical problem is the latent influence of some introduced heavy metal ions on clinker burnability , and its hydration .…”

Section: Introductionmentioning

confidence: 99%

Predicting Hydration Reactivity of Cu-Doped Clinker Crystals by Capturing Electronic Structure Modification

Tao

Zhang

et al. 2019

ACS Sustainable Chem. Eng.

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Chemical doping is a promising scheme for sustainable development of green and economical cement manufacturing related to global energy and environmental concerns. Understanding and controlling doping effect on reactive cement components is the prerequisite. This study aims to propose effective theoretical methods to reveal the correlation between hydration reactivity of doped clinker crystals and their electronic structures. Four dominant Portland cement clinker phases with copper doping are comparatively investigated by the state-of-the-art ab initio calculation. It finds that Cu ions doped in silicate and aluminate phases shift the nucleophilic reactive sites from Ca-centered regions to defect sites by decreasing the effective charges of Ca ions, which accounts for the hydration retardation of these phases. Exceptionally, the reactive sites in ferrite phase are scarcely changed by Cu doping due to the intense band-edge localization of Fe 3d state, which implies the relatively lesser influence on hydration reactivity. The corresponding experiments of the ion release rate of clinker phases during early hydration process as captured by the conductivity meter and inductively coupled plasma-optical emission spectrum strongly support our computational results. Our theoretical calculations provide a powerful method to predict the early hydration reactivity of clinker minerals and enrich the understanding of early hydration characteristics and its variations.

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Incorporation and substitution mechanism of cadmium in cement clinker

Cited by 32 publications

References 33 publications

Çi̇mento Ve Uçucu Kül Bünyesi̇ndeki̇ Ağir Metalleri̇n Etki̇leri̇ni̇n Hi̇dratasyon Ve Çevre Sağliği Açisindan İncelenmesi̇

Çi̇mento Ve Uçucu Kül Bünyesi̇ndeki̇ Ağir Metalleri̇n Etki̇leri̇ni̇n Hi̇dratasyon Ve Çevre Sağliği Açisindan İncelenmesi̇

Role of Municipal Sewage Sludge in Incorporating Cr, Ni, Cu, and Zn into Cement Clinker

Predicting Hydration Reactivity of Cu-Doped Clinker Crystals by Capturing Electronic Structure Modification

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