Mechanical properties and durability of concrete made with high-volume fly ash blended cements using a coarse fly ash

Bouzoubaa, N.; Zhang, M.H; Malhotra, V. M.

doi:10.1016/s0008-8846(01)00592-0

Cited by 191 publications

(86 citation statements)

References 2 publications

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“…When a high volume fly ash concrete is designed, it is necessary to consider a reduction in the water to cementitious material ratio; as this is reduced, superplasticizer is increased to maintain the same slump [11,12]. Although such a concrete is considered a 'green' alternative, it is not an optimal one in many instances due to the increased consumption of a high-cost superplasticizer.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of activated high volume fly ash systems using Na 2 SO 4 , lime and quicklime in mortars with high loss on ignition fly ashes

Velandia

Lynsdale

Provis

et al. 2016

Construction and Building Materials

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Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. The effect of sodium sulfate, added as an activator, is significant in terms of compressive strength at early age for two of the fly ashes studied; in this case, the parameter used to correlate with the compressive strength evolution is the amount of portlandite consumed through pozzolanic reactions. However, sodium sulfate does not have the same effect on fly ashes with a high amount of Fe 2 O 3 , in which portlandite consumption is much lower.

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Section: Introductionmentioning

confidence: 99%

Evaluation of activated high volume fly ash systems using Na 2 SO 4 , lime and quicklime in mortars with high loss on ignition fly ashes

Velandia

Lynsdale

Provis

et al. 2016

Construction and Building Materials

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“…Cascarilla de arroz Guatemala, España, Argentina, Perú, Colombia [18][19][20][21][22][23] Cenizas de cáscara de arroz España; Perú; Argentina; Habana; Cuba; Cartagena; Colombia.…”

Section: Adiciones Residuales Lugar Referenciasunclassified

Residuos agroindustriales como adiciones en la elaboración de bloques de concreto no estructural

Molina

Tarifa

Mendoza

2015

Cien.Ing.Neogranadina

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<p>La introducción de residuos industriales como sustitutos del cemento en bloques ecológicos de construcción, brindan la posibilidad de establecer un amplio desarrollo a nivel ambiental, social y económico. En la presente investigación se fabricaron bloques ecológicos con dimensiones comerciales a nivel industrial, en los que se reemplazó un porcentaje del contenido cemento por cascarilla de arroz, ceniza de la cascarilla de arroz y ceniza volante (caracterizadas mediante ensayos de granulometría, masa unitaria y humedad), en 10, 15 y 20 %, manteniendo constante la cantidad de agua y arena de mezclado del bloque. Los bloques ecológicos obtenidos se analizaron mecánicamente, y se determinó la resistencia a compresión, obteniendo como resultados promedio 0.585 MPa, 0,743 MPa y 0,956 MPa para cascarilla de arroz, ceniza de la cascarilla de arroz y ceniza volante, respectivamente, a los 7, 28 y 45 días de curado; dichas resistencias se compararon con la del patrón, que consistían en el bloque de referencia con 100 % de cemento, las cuales fueron de 0.802 MPa, para observar las características cementantes de las adiciones, las cuales afectan considerablemente la resistencia del eco-bloque. Mediante los resultados obtenidos, se concluyó que el porcentaje óptimo de adición es el 15 % de ceniza de centrales térmicas a los 28 días de curado, como reemplazo parcial del cemento en bloques de concreto, resaltando que aunque existe una disminución en la resistencia a la compresión y tensión en algunos casos, es viable el uso de las adiciones para la elaboración de bloques de concreto como propuesta efectiva para la reutilización de estos residuos que sirven de guía hacia el desarrollo de materiales más competitivos técnica, económica y ambientalmente. </p>

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“…The significant outcome by adding these materials are well reported [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Beginning of the 21th century, other new potential materials have been initiated to enhance the cement based properties is Effective Microorganism (EM) [16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Effective Microorganism (EM) Inclusion to the Setting Time of Microbed Cement Paste

et al. 2017

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Abstract. The inclusion of Effective Microorganism (EM) lengthen the setting time of microbed cement paste with respect to the control cement paste. However, the investigation on the influence of EM ingredients to the setting time was not performed yet in the earlier study. Therefore, the test of X-Ray Diffraction (XRD) was performed on the EM product used in order to determine their ingredients. Further examination was carried out to analyse the pore characteristics in examining the effect of the pore size distribution to the setting time of microbed cement paste. Potassium Chloride (KCl) was detected in EM liquid using XRD test. It can be concluded, the ingredient of EM which is consist of the molasses influenced the setting time of microbed cement paste. The hardening rate of microbed cement paste was effected by the presence of KCl. The pore size of microbed cement paste recorded the lower pore volume (mL/g) with respect to the control cement paste. The larger intrusion of mercury was recorded at smaller pore diameter in microbed cement paste while control cement paste occupied at the bigger pore diameter. The microbed cement paste (16.5%) recorded the smaller porosity than cement paste without EM (20.3%). The smaller cement pore effects the delayed setting time of microbed cement.

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Mechanical properties and durability of concrete made with high-volume fly ash blended cements using a coarse fly ash

Cited by 191 publications

References 2 publications

Evaluation of activated high volume fly ash systems using Na 2 SO 4 , lime and quicklime in mortars with high loss on ignition fly ashes

Evaluation of activated high volume fly ash systems using Na 2 SO 4 , lime and quicklime in mortars with high loss on ignition fly ashes

Residuos agroindustriales como adiciones en la elaboración de bloques de concreto no estructural

The Effect of Effective Microorganism (EM) Inclusion to the Setting Time of Microbed Cement Paste

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