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Influence of fly ash blending on hydration and physical behavior of belite–alite–ye’elimite cements

تأثير مزج الرماد المتطاير على الترطيب والسلوك الجسدي لأسمنت البيليت-أليت- ييليميت
Authors: Diana Londoño-Zuluaga; Jorge Iván Tóbon; Miguel Á. G. Aranda; Isabel Santacruz; Ángeles G. De la Torre;

Influence of fly ash blending on hydration and physical behavior of belite–alite–ye’elimite cements

Abstract

Une poudre de ciment, composée de bélite, d'alite et de ye'elimite, a été mélangée avec 0, 15 et 30 % en poids de cendres volantes et les ciments mélangés résultants ont été davantage caractérisés. Pendant l'hydratation, la présence de cendres volantes a provoqué l'inhibition partielle de la dégradation de l'AFt et de la réactivité de la bélite, même après 180 jours. La résistance à la compression des mortiers correspondants a augmenté en augmentant la teneur en cendres volantes (68, 73 et 82 MPa pour les mortiers avec 0, 15 et 30 % en poids de cendres volantes, respectivement, à 180 jours de durcissement), principalement en raison de la diminution des valeurs de porosité et de taille des pores. Bien que la réaction pouzzolanique n'ait pas été directement prouvée, il existe des preuves indirectes.

Se mezcló un polvo de cemento, compuesto de belita, alita y ye'elimita, con 0, 15 y 30% en peso de cenizas volantes y los cementos mezclados resultantes se caracterizaron adicionalmente. Durante la hidratación, la presencia de cenizas volantes causó la inhibición parcial tanto de la degradación de AFt como de la reactividad de la belita, incluso después de 180 días. La resistencia a la compresión de los morteros correspondientes aumentó al aumentar el contenido de cenizas volantes (68, 73 y 82 MPa para morteros con 0, 15 y 30% en peso de cenizas volantes, respectivamente, a los 180 días de curado), principalmente debido a la disminución de los valores de porosidad y tamaño de poro. Aunque la reacción puzolánica no se ha demostrado directamente, existen evidencias indirectas.

A cement powder, composed of belite, alite and ye'elimite, was blended with 0, 15 and 30 wt% of fly ash and the resulting blended cements were further characterized. During hydration, the presence of fly ash caused the partial inhibition of both AFt degradation and belite reactivity, even after 180 days. The compressive strength of the corresponding mortars increased by increasing the fly ash content (68, 73 and 82 MPa for mortars with 0, 15 and 30 wt% of fly ash, respectively, at 180 curing days), mainly due to the diminishing porosity and pore size values. Although pozzolanic reaction has not been directly proved there are indirect evidences.

تم مزج مسحوق الأسمنت، المكون من البيليت والأليت واليليمت، مع 0 و 15 و 30 ٪ بالوزن من الرماد المتطاير وتم تمييز الأسمنت المخلوط الناتج بشكل أكبر. أثناء الترطيب، تسبب وجود الرماد المتطاير في تثبيط جزئي لكل من تدهور AFt وتفاعل البليت، حتى بعد 180 يومًا. زادت مقاومة الانضغاط للملاط المقابل عن طريق زيادة محتوى الرماد المتطاير (68 و 73 و 82 ميجا باسكال للملاط مع 0 و 15 و 30 ٪ بالوزن من الرماد المتطاير، على التوالي، عند 180 يوم معالجة)، ويرجع ذلك أساسًا إلى تناقص المسامية وقيم حجم المسام. على الرغم من عدم إثبات رد الفعل البوزولاني بشكل مباشر، إلا أن هناك أدلة غير مباشرة.

Country
Spain
Keywords

Composite material, Portland cement, Materials Science, Cement, Hydration, Pyrochlore as Nuclear Waste Form, Compressive strength, Phase evolution, Fly ash, Pozzolan, Engineering, Clinker (cement), Belite–alite–ye’elimite cement, Materials Chemistry, Geopolymer and Alternative Cementitious Materials, Civil and Structural Engineering, Magnesium-Based Cements and Nanomaterials, Belite, Curing (chemistry), Fly Ash, Rietveld method, NMR, Materials science, 620, Pozzolanic activity, Mortar, Alite, Cenizas volantes, Physical Sciences, Cemento, Porosity

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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