Comparison of two processes for treating rice husk ash for use in high performance concrete

Salas, Andrés; Delvasto, Silvio; Mejía-de-Gutiérrez, Ruby; Lange, David A.

doi:10.1016/j.cemconres.2009.05.006

Cited by 172 publications

(68 citation statements)

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“…The change of this characteristic results in a different specific surface area (SSA) and therefore a different pozzolanic reactivity and different water absorption of RHA (Bui 2001;Nguyen 2011;; Van et al 2013). RHA has been studied to replace SF as a partial Portland cement replacement, and the results show that RHA can fully substitute SF in terms of calcium hydroxide consumption, autogeneous shrinkage, compressive strength and durability of high performance concrete (Bui 2001;Van et al 2013;Feng et al 2004;Salas et al 2009) and ultra high performance concrete (Nguyen 2011;Nguyen et al 2011). However, the effect of RHA on properties of HPFGC needs additional research.…”

Section: Introductionmentioning

confidence: 99%

A Study on High Performance Fine-Grained Concrete Containing Rice Husk Ash

Nguyen

Ludwig

2014

Int J Concr Struct Mater

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Rice husk ash (RHA) is classified as a highly reactive pozzolan. It has a very high silica content similar to that of silica fume (SF). Using less-expensive and locally available RHA as a mineral admixture in concrete brings ample benefits to the costs, the technical properties of concrete as well as to the environment. An experimental study of the effect of RHA blending on workability, strength and durability of high performance fine-grained concrete (HPFGC) is presented. The results show that the addition of RHA to HPFGC improved significantly compressive strength, splitting tensile strength and chloride penetration resistance. Interestingly, the ratio of compressive strength to splitting tensile strength of HPFGC was lower than that of ordinary concrete, especially for the concrete made with 20 % RHA. Compressive strength and splitting tensile strength of HPFGC containing RHA was similar and slightly higher, respectively, than for HPFGC containing SF. Chloride penetration resistance of HPFGC containing 10-15 % RHA was comparable with that of HPFGC containing 10 % SF.

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Section: Introductionmentioning

confidence: 99%

A Study on High Performance Fine-Grained Concrete Containing Rice Husk Ash

Nguyen

Ludwig

2014

Int J Concr Struct Mater

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“…La ceniza de la cascarilla del arroz es un material puzolánico y altamente reactivo como se ha demostrado en otras investigaciones [8,[14][15]23], que al mezclarse con el cemento afectan las reacciones químicas en la fase de hidratación mejorando la resistencia del concreto.…”

Section: Resultados Y Discusiónunclassified

“…En otras investigaciones, se ha utilizado la ceniza de cascarilla del arroz obtenida mediante un tratamiento químico y térmico como sustituto parcial del cemento en mezclas de concreto hidráulico, encontrándose incremento en la resistencia a flexión [14,15,23], también se ha utilizado la ceniza de cascarilla de arroz como aditivo en morteros, obteniéndose morteros ligeros pero de baja resistencia mecánica [1,5,9].…”

Section: Introductionunclassified

“…Adicionalmente, se emplean técnicas de análisis como la Difracción de Rayos X (DRX) y el Microscopio Electrónico de Barrido (MEB) [20][21][22][23], para conocer la composición mineralógica y morfología de la ceniza, el cemento utilizado y los especímenes fabricados para los diferentes tipos de ensayos a compresión, flexión y tracción indirecta.…”

Section: Introductionunclassified

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Concreto hidráulico modificado con sílice obtenida de la cascarilla del arroz

Pérez

Sandoval

2017

Cien.Ing.Neogranadina

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<p>El cemento es una de las materias primas en la producción del concreto hidráulico, pero su producción es considerada como uno de los procesos más contaminantes en nuestro planeta. El proyecto de investigación analiza el comportamiento mecánico, físico y químico de una mezcla de concreto hidráulico modificado con sílice obtenida por la incineración de cascarilla de arroz. La metodología utilizada fue un diseño experimental que se trabajó con cemento Holcim M1 Concretera, se utilizó como muestra patrón un diseño de mezcla de concreto hidráulico para una resistencia a la compresión de 350 Kg/cm2, y resistencia a la flexión de 42 Kg/cm2. La modificación se realizó mediante la sustitución del cemento por ceniza de cascarilla de arroz (sílice), en proporciones del 5%, 15% y 30%. Los resultados muestran la viabilidad para el porcentaje de sustitución de 5% en la resistencia a la compresión, la tracción indirecta y a la flexión, por lo tanto, hay una viabilidad técnica para aplicar este procedimiento.</p>

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“…The reactivity of RHA in concrete is influenced by the ash properties. Previous studies on RHA suggest that incinerating conditions, pre-incinerating treatment of the rice husk, geographical location and specific surface affects the reactivity of RHA in concrete (Salas et al 2009;Nehdi et al 2003;Bui et al 2005;Givi et al 2010;Paya et al 1995Paya et al , 1997Kraiwood et al 2001;Ganesan et al 2008;Ferraro and Nanni 2012). In addition to the pozzolanic reactions of the amorphous silica, the filler effect of the fine RHA particles in the concrete also improves strength at the interfacial transition zone (ITZ) between aggregate and the cement paste (Bui et al 2005;Giaccio et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Strength and Some Durability Properties of Concrete Containing Rice Husk Ash Produced in a Charcoal Incinerator at Low Specific Surface

Abalaka

2013

Int J Concr Struct Mater

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Strength and some durability properties of concrete containing rice husk ash (RHA) predominantly composed of amorphous silica at a specific surface of 235 m 2 /kg produced using a charcoal incinerator were determined. The maximum ordinary Portland cement (OPC) replacement with the RHA increased with increase in water/binder (w/b) ratio of the concrete mixes. The results show that 15 % OPC could be substituted by the RHA without strength loss at w/b ratio of 0.50. The split tensile strength generally increased with increase in RHA content for the mixes.

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Comparison of two processes for treating rice husk ash for use in high performance concrete

Cited by 172 publications

References 12 publications

A Study on High Performance Fine-Grained Concrete Containing Rice Husk Ash

A Study on High Performance Fine-Grained Concrete Containing Rice Husk Ash

Concreto hidráulico modificado con sílice obtenida de la cascarilla del arroz

Strength and Some Durability Properties of Concrete Containing Rice Husk Ash Produced in a Charcoal Incinerator at Low Specific Surface

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