Assessment of pozzolanic activity of different calcined clays

Tironi, Alejandra; Trezza, Mónica Adriana; Scian, Alberto N.; Irassar, Edgardo F.

doi:10.1016/j.cemconcomp.2013.01.002

Cited by 363 publications

(169 citation statements)

References 36 publications

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“…This is because of the rich saturated lime environment in the test that enabled the maximum possible pozzolanic performance of YTT. There is no cement hydration process in lime saturation test and consumption of CaO directly represents the pozzolanic performance of YTT; similar trends for other pozzolans have been reported in the literature 8,22,25 . From the observations in the Frattini test and lime saturation test, the pozzolanicity of the reactive silica present in YTT can be confirmed 6 .…”

supporting

confidence: 56%

“…PPC is usually a blend of 10-30% pozzolanic material (typically fly ash) with cement clinker, which reduces the carbon dioxide emitted per tonne of the product 5 . Materials having fine grain size, amorphous in nature with a glassy texture and rich in reactive silica are considered to be good pozzolanic materials [6][7][8] . These materials react with the hydrated lime produced from cement hydration to produce additional calcium silicate hydrate 9 .…”

mentioning

confidence: 99%

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Pozzolanic Characteristics of Young Toba Tuff

Siva¹,

Achyuthan²,

Santhanam³

2015

Current Science

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Portland Pozzolana Cement (PPC) is widely used to achieve durable and sustainable concrete in modern construction. In the present study, the potential use of natural volcanic ash in the manufacturing of PPC has been studied. Young Toba Tuff (YTT) was collected from Jwalapuram, Andhra Pradesh, India. The pozzolanic performance of this ash was assessed by Strength Activity Index (SAI) and Frattini test. SAI of YTT was found to be above 75% for sufficient pozzolanicity. Further, the results of Frattini test were below the lime solubility curve, indicating that YTT could be potentially useful as pozzolanic material in concrete.

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confidence: 56%

mentioning

confidence: 99%

Pozzolanic Characteristics of Young Toba Tuff

Siva¹,

Achyuthan²,

Santhanam³

2015

Current Science

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“…However, they have good pozzolanic activity when calcined at temperatures between 600 and 900 °C and ground to cement fineness (3,4). The ceramic industry generates a large volume of calcined clay wastes (up to 3% of production depending on producer and country).…”

Section: Introductionmentioning

confidence: 99%

Portland blended cements: demolition ceramic waste management

et al. 2017

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Demolition ceramic wastes (DCWs) were investigated in order to determine their potential use as supplementary cementitious materials in Portland Blended Cements (PBCs). For this purpose, three ceramic wastes were investigated. After characterization of the materials used, the effect of ceramic waste replacement (8, 24 and 40% by mass) was analyzed. Pozzolanic activity, hydration progress, workability and compressive strength were determined at 2, 7 and 28 days. The results showed that the ground wastes behave as filler at an early age, but as hydration progresses, the pozzolanic activity of ceramic waste contributes to the strength requirement. RESUMEN:Cementos Portland con adiciones: manejo de residuos cerámicos de demolición. Se estudiaron residuos cerámicos de demolición (DCWs) a fin de determinar su potencial uso como materiales cementicios suplementarios en cementos mezcla (PBC). Para este propósito, se investigaron tres residuos cerámicos. Luego de la caracterización de los materiales a utilizar, se analizó el efecto del reemplazo por residuos cerámico (8, 24 y 40% en peso). Se estudió la actividad puzolánica, el progreso de la hidratación, la trabajabilidad y la resistencia a compresión a 2, 7 y 28 días. Los resultados mostraron que los residuos molidos se comportaron como fillers a edades tempranas, pero con el progreso de la hidratación, la actividad puzolánica de los residuos cerámicos contribuye a los requerimientos de resistencia.

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“…According to Donatello et al [80] who confronted different method to assess the pozzolanic activity of an addition, compressive strength tests results were well correlated to the standard Frattini test. Tironi et al [81] working on calcined clays, confirmed that there is a good correlation between Frattini test results and Strength Activity Index (SAI) results. However, they also showed that, in some cases, a high chemical consumption of CH by a material in Frattini test is not related to increased mechanical performances.…”

Section: Camentioning

confidence: 86%

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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Assessment of pozzolanic activity of different calcined clays

Cited by 363 publications

References 36 publications

Pozzolanic Characteristics of Young Toba Tuff

Pozzolanic Characteristics of Young Toba Tuff

Portland blended cements: demolition ceramic waste management

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

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