Effects of olive residue biomass fly ash as filler in self-compacting concrete

Cuenca, Jerome A.; Rodríguez, José Juan Santana; Martín-Morales, M.; Sánchez-Roldán, Z.; Zamorano, M.

doi:10.1016/j.conbuildmat.2012.09.101

Cited by 125 publications

(48 citation statements)

References 42 publications

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“…Desde hace tiempo se vienen aprovechando residuos de todo tipo, tras un estudio exhaustivo de sus propiedades, para la elaboración de hormigones. Incluso están apareciendo artículos técnicos sobre la posibilidad de emplear cenizas de biomasa procedente de aceituna [3] o de adicionar recortes de bolsas de plástico a la mezcla [4].…”

Section: Introductionunclassified

Caracterización mecánica y reológica de un hormigón autocompactante elaborado con finos de recuperación procedentes de la fabricación de mezclas asfálticas

Mingorance

Romero²,

Montero

et al. 2018

Libro De Comunicaciones / Livro Das Comunicações

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RESUMENEn el trabajo que se presenta se estudia la valorización de un fíller de recuperación, procedente de una planta de fabricación de aglomerados asfálticos, para su uso en la elaboración de hormigones autocompactantes (HAC) con aplicaciones estructurales. En primer lugar, se ha caracterizado el fíller para determinar su potencial aplicabilidad en este tipo de hormigones. Posteriormente, se ha diseñado y confeccionado un hormigón autocompactante con las prescripciones impuestas para una clase IIb de exposición ambiental, partiendo del método de dosificación de Okamura y ajustando mediante amasadas de prueba las proporciones hasta cumplir los requisitos normalizados de autocompactabilidad. Una vez logradas, el trabajo se ha centrado en la evaluación de las características mecánicas y reológicas del hormigón seleccionado, determinando su comportamiento en cuanto a su resistencia a compresión y tracción, módulo de deformación, coeficiente de Poisson, retracción por secado y fluencia. Los resultados obtenidos han confirmado que con este fíller de recuperación se pueden satisfacer plenamente los requisitos de autocompactabilidad exigidos por la normativa actual, si bien este hormigón exige una mayor dosis de aditivo superplastificante para lograrlos. Asimismo, el hormigón ha alcanzado valores en las propiedades mecánicas adecuados para su aplicación estructural aunque se ha observado mayor deformabilidad que en el hormigón de referencia. PALABRAS CLAVE:Hormigón autocompactante, fíller de recuperación, fluencia, retracción.

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Section: Introductionunclassified

Caracterización mecánica y reológica de un hormigón autocompactante elaborado con finos de recuperación procedentes de la fabricación de mezclas asfálticas

Mingorance

Romero²,

Montero

et al. 2018

Libro De Comunicaciones / Livro Das Comunicações

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“…The biomass ashes mentioned before are widely used for the manufacture of cement due to its grain size and chemical composition with high contents of SiO2 and CaO [5][6][7]. The rice husks were also studied with this purpose [8] and for incorporation as filler in bituminous mixtures [9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of sunflower husk ashes and feasibility analysis of their incorporation in soil and clay mixtures for ceramics

Quaranta

Pelozo

Cesari

et al. 2016

WIT Transactions on Ecology and the Environment

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The aim of this work is to study ashes from the combustion of sunflower husks in order to determine their environmental suitability for reuse as a structural filler or as an aggregate in clay mixtures for the manufacture of ceramics. Various characterization techniques were used, such as optical and electronic microscopy, X-ray electron dispersive analysis, X-ray diffraction, analysis of particle size distribution, soluble solids, conductivity, pH, leaching test and ecotoxicity, among others. The results of chemical analysis show that the main elements are Mg, Ca, and P. The conductivity and pH values after 2h of stirring in distilled water are 17.11 mS and 11.46, respectively. Results from analysis of the leaching test determine that none of the measured values in the ashes exceed the limits established by law 24051 (Argentina) on hazardous waste. Regarding the ecotoxicity analysis, it is observed that sunflower husk ashes inhibit the growth of seedlings at the studied concentrations. It can be concluded that it is not convenient to use the ashes as soil filler because it would produce alkaline soil, transferring a large amount of electrolytes, and producing negative effects on the development of many species that need acid or slightly alkaline soil. From the experimental results and the analysis of the equilibrium diagrams of the major oxides of claywaste mixtures, the theoretical sintering temperature was determined. It shows that it is feasible to incorporate up to 20% of this waste material holding sintering temperatures commonly used in the ceramic industry (1050°C). For higher

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“…Several studies have been conducted on the possible reuse and recycling of biomass ash as a substitute for building materials such as concrete, cement, ceramic bricks, and building panels [7][8][9][10][11][12][13][14][15][16], and as a filler for bituminous mixtures. In Portugal, Esteves [9] found that the use of 20% biomass fly ash with 10% metakaolin to replace mortars can effectively mitigate alkali-silica reactions in concretes.…”

Section: Introductionmentioning

confidence: 99%

Extraction and quantitation of various potassium salts in straw ash

Wang

Tan

et al. 2014

Environ. Prog. Sustainable Energy

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Biomass ash contains various potassium salts, which have high potential as crop fertilizers. In this study, a method of extracting and quantifying various potassium salts from straw ash was proposed and investigated. Straw ash was prepared in a muffle furnace at 500°C and then successively and repeatedly treated through leaching, filtration, concentration, and crystallization. The extracted products were analyzed by X‐ray diffraction and X‐ray fluorescence. Results show that the elemental potassium content and potassium salt content in the recovered products reached 43.1 and 78.1%, respectively. The potassium salts mainly existed as K2SO4, KCl, and K2CO3 at a molar mass ratio of 1:2.33:1.73. The extraction ratio of the products increased with increasing extraction time. The initial extraction ratio was 35.71%. This ratio increased to 50.15 and 69.43% when the extraction process was repeated for the second and sixth times, respectively. This work provides an efficient method of recovering and extracting potassium salts from biomass ash for use as potash fertilizers. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 333–338, 2015

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Effects of olive residue biomass fly ash as filler in self-compacting concrete

Cited by 125 publications

References 42 publications

Caracterización mecánica y reológica de un hormigón autocompactante elaborado con finos de recuperación procedentes de la fabricación de mezclas asfálticas

Caracterización mecánica y reológica de un hormigón autocompactante elaborado con finos de recuperación procedentes de la fabricación de mezclas asfálticas

Characterization of sunflower husk ashes and feasibility analysis of their incorporation in soil and clay mixtures for ceramics

Extraction and quantitation of various potassium salts in straw ash

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