Design of new blended cement based on marine dredged sediment

Dang, Tuan Anh; Kamali-Bernard, Siham; Prince, William

doi:10.1016/j.conbuildmat.2012.11.088

Cited by 93 publications

(61 citation statements)

References 7 publications

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“…To reduce the chloride content of studied sediments, a washing process used by Dang et al (13) was made. It consists to dilute the sediment with water at 3:1 sediment to water ratio.…”

Section: Treatment and Characterizationmentioning

confidence: 99%

Composite cement mortars based on marine sediments and oyster shell powder

Ez-zaki¹,

Diouri²,

Kamali-Bernard³

et al. 2016

Mater. construcc.

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Additions of dredged marine sediments and oyster shell powder (OS) as cement substitute materials in mortars are examined by several techniques. The sediments have high water and chloride contents and calcite, quartz, illite and kaolinite as principal minerals. The OS powders are entirely composed of calcium carbonate and traces of other impurities. Four mixtures of treated sediments and OS powders at 650 °C and 850 °C are added to Portland cement at 8%, 16% and 33% by weight. The hydration of composite pastes is followed by calorimetric tests, the porosity accessible to water, the bulk density, the permeability to gas, the compressive strength and the accelerated carbonation resistance are measured. In general, the increase of addition amounts reduced the performance of mortars. However, a reduction of gas permeability was observed when the addition was up to 33%. Around 16% of addition, the compressive strength and carbonation resistance were improved. RESUMEN: Morteros de cemento basado en sedimentos marinos y polvo de concha de ostra.En este trabajo se ha valorado la sustitución de cemento en morteros por sedimentos marinos dragados y polvo de concha de ostra (OS). Los sedimentos tienen altos contenidos de agua, cloruros, calcita, cuarzo, illita y caolinita como minerales principales. Los polvos OS están compuestos de carbonato cálcico y trazas de otras impurezas. Se añadieron a un cemento Portland, cuatro mezclas de los sedimentos y polvos de OS tratados a 650 °C y 850 °C en proporciones del 8%, 16% y 33% en peso. La hidratación de pastas se estudió a través de calorimetría. Se estudió además la porosidad accesible al agua, densidad aparente, permeabilidad al gas, resistencia a compresión y carbonatación acelerada. En general, un aumento en la adición produjo una reducción del rendimiento de los morteros. Se observó, sin embargo, una reducción de la permeabilidad a los gases con porcentajes de adición de hasta el 33%. Con valores del 16% de sustitución, mejoraron las resistencias mecánicas y la resistencia frente a la carbonatación.

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“…To reduce the chloride content of studied sediments, a washing process used by Dang et al (13) was made. It consists to dilute the sediment with water at 3:1 sediment to water ratio.…”

Section: Treatment and Characterizationmentioning

confidence: 99%

Composite cement mortars based on marine sediments and oyster shell powder

Ez-zaki¹,

Diouri²,

Kamali-Bernard³

et al. 2016

Mater. construcc.

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“…Semcha showed that it is possible to substitute 30% of CEM I Portland cement by calcined sludge without any loss in unconfined compression strength. Later, Dang et al [40] fired estuarine finegrained sediment at 650 and 850 °C. It was demonstrated that a thermal treatment at 650 °C gives the best results for mechanical compression tests.…”

Section: Cement Industrymentioning

confidence: 99%

Ability of Two Dam Fine-Grained Sediments to be Used in Cement Industry as Raw Material for Clinker Production and as Pozzolanic Additional Constituent of Portland-Composite Cement

Faure

Smith

Coudray

et al. 2017

Waste Biomass Valor

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other one is calcined in the range 550-1000 °C aiming to obtain a pozzolanic reactive material that could be used as supplementary cementitious material in blended Portland cement. After thermal treatments, the products are characterized and compared to ordinary Portland cement (OPC) and to pozzolanic active materials (fly ash from pulverized-coal power plant). Results showed that each sediment is suitable for the only tested reuse option. For the clinker prepared with SEP sediment, the morphology and the mineralogical composition correspond to those of a typical Portland clinker. Concerning calcined STA pozzolanic activity, the optimum thermal treatment was found to be 900 °C using the chemical Frattini test. Similar compressive strength results were obtained with calcined STA and silico-aluminous fly ash.Abstract Fine-grained sediment deposition is a phenomenon that occurs at different extents in all the reservoirs. This particle accumulation has to be properly managed, in accordance with the operational needs and the environment. As an extracted and on-land managed sediment has to be considered as a waste material according to both European and French regulations, sustainable reuse options need to be investigated. One of them could be a beneficial reuse as a raw material in cement industry either as partial substitution in Portland clinker raw mix or as a supplementary cementitious material (SCM) after thermal treatment in order to activate its possible pozzolanic activity. Two dredged materials, labelled SEP and STA, both from French hydroelectric reservoirs, are characterized on physical, chemical and mineralogical aspects. SEP is used as raw material partial replacement for clinker synthesis and the The original version of this article was revised due to a retrospective Open Access order.

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“…Les applications concernent les composés cimentaires, les bétons et mortiers, les matériaux routiers et de remblai, les céramiques (LIMEIRA et al, 2010 ;AOUAD et al, 2012 ;DANG et al, 2013 ;DALTON et al, 2004 ;GARDNER et al, 2007 ;ZENTAR et al, 2008 ;ANGER et al, 2013). Cependant la filière matériau routier, de par les volumes de sédiments susceptibles d'être traités reste la plus étudiée.…”

Section: Introductionunclassified

Effets des cendres volantes sur le comportement mécanique de sédiments méditerranéens traités à base de ciment et de chaux

Liang¹,

Levacher²,

Deneele³

et al. 2014

XIIIèmes JNGCGC, Dunkerque

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Résumé :Des sédiments de dragage méditerranéens provenant de six ports ont été stabilisés voire solidifiés avec des liants hydrauliques classiques : ciment et chaux. Une incorporation de 10% de cendres volantes (co-produits industriels de type F) a été menée sur des mélanges sédiments-liants dont les dosages de base étaient 7% de ciment et 2% de chaux. Cette incorporation de cendres volantes permet une amélioration du comportement mécanique validée par des essais de résistance en compression simpleRc -effectués aux dates conventionnelles de 14, 28 et 60 jours. Les cendres volantes dont la teneur élevée en éléments Si et Al, peuvent contribuer à accélérer la réaction d'hydratation. On a bien observé que les valeurs de Rc à la rupture des sédiments traités avec 10% de cendres volantes augmentent plus rapidement jusqu'à 28 jours par rapport à celles obtenues pour les sédiments sans addition de cendre volantes. Au-delà de 28 jours, on note une diminution des valeurs de Rc acquises pour les sédiments traités avec 10% de cendres volantes. Considérant d'une part, les principales caractéristiques physico-chimiques des sédiments méditerranéens et liants étudiés et d'autre part les conditions de cure, les effets des cendres volantes incorporées dans les mélanges sédiments-liants de base, sont analysés. Des explications sont apportées à ces observations.

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Design of new blended cement based on marine dredged sediment

Cited by 93 publications

References 7 publications

Composite cement mortars based on marine sediments and oyster shell powder

Composite cement mortars based on marine sediments and oyster shell powder

Ability of Two Dam Fine-Grained Sediments to be Used in Cement Industry as Raw Material for Clinker Production and as Pozzolanic Additional Constituent of Portland-Composite Cement

Effets des cendres volantes sur le comportement mécanique de sédiments méditerranéens traités à base de ciment et de chaux

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