Quality properties of self-consolidating concrete mixed with waste concrete powder

Kim, Yong-Jic

doi:10.1016/j.conbuildmat.2016.12.174

Cited by 75 publications

(22 citation statements)

References 13 publications

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“…Furthermore, some cement paste from the original mortar is still attached to the surface of the stone powder particles. The enclosed paste is the main reason for the porous of WCP particles [14,28,30], which will increase the sorptivity coefficients and reduce the flowability of cementitious materials. It also can be observed that a lot of small particles are coated on the surface of WCP, which weakens the bond between the cement paste and WCP [31].…”

Section: Morphology Of Wcp Particlementioning

confidence: 99%

“…For instance, replacing 20 % and 30 % FA with WCP-1 decreased flow index of 3.60 % and 6.04 %, respectively. This is because the rough surface of WCP particles absorbs part of the water and consequently reduces the flowability of FA mortar [14]. Furthermore, as shown in Fig.…”

Section: Fig 6 Flow Index Versus Wcp Content For Specimensmentioning

confidence: 99%

“…They found that WCP to be a useful supplementary cementitious material (SCM), especially when using blended cement. Kim et al [14], also found that WCP can replace partial ordinary Portland cement in producing self-consolidating concrete. Liu et al studied WCP recovered by the dust collection system [19].…”

Section: Introduction mentioning

confidence: 97%

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Influences of Waste Concrete Powder on the Strength Development and Hydration Products of Mortar Containing Fly Ash

Yang¹,

Che²

2022

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During recycling waste concrete, a large amount of waste concrete powder (WCP) is generated. However, efficient utilization of WCP remains an unresolved issue. This paper investigates the influences of WCP on the properties and hydration products of cement mortar containing fly ash (FA). This study used two different types of WCPs. One was made from an ordinary Portland cement mortar, and the other was derived from a Portland cement mortar. WCP replaced 10%, 20%, and 30% of FA. The water requirement, setting time, flow index, strength, hydration products, and microstructure of FA mortar incorporating WCP were investigated. Test results indicate that the WCP has no significant influence on the performances and hydration products of FA mortar. By adequately combining WCP and FA, the FA mortar with required performances could be reached.

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Section: Morphology Of Wcp Particlementioning

confidence: 99%

Section: Fig 6 Flow Index Versus Wcp Content For Specimensmentioning

confidence: 99%

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Influences of Waste Concrete Powder on the Strength Development and Hydration Products of Mortar Containing Fly Ash

Yang¹,

Che²

2022

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“…Del reemplazo del 10, 20 y 30 % de CPO por CWP resultó en una disminución de resistencia de 1,40 %, 16,49 % y 19,78 %, respectivamente, a los 28 días de curado. Esta disminución se atribuye a que este residuo es no reactivo (Kim, 2017). Es decir, que con un reemplazo del 10 % de cemento por CWP en volumen, no se presentó una disminución significativa de la resistencia a la compresión respecto a la mezcla patrón, incluso, a los 7 días de curado la resistencia fue mayor un 2,36 % (ver Figura 7).…”

Section: Propiedades En Estado Endurecidounclassified

Propiedades Físico-Mecánicas De Concretos Autocompactantes Producidos Con Polvo De Residuo De Concreto

Pastrana-Ayala¹,

Silva-Urrego²,

Adrada-Molano³

et al. 2019

Inf.Tec

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La gran demanda de Cemento Portland Ordinario (CPO) debido al incremento de nuevas obras civiles y la generación de Residuos de Construcción y Demolición (RCD) causan un impacto ambiental negativo, por lo que una solución a esta problemática es el reciclaje de estos materiales para la producción de nuevos concretos. El reemplazo parcial de CPO por polvo de residuo de concreto (Concrete Waste Powder, CWP), proveniente del proceso de reciclaje de concreto, ha sido un enfoque sostenible. En esta investigación ser realizó la caracterización química y puzolánica del CWP mediante Fluorescencia de Rayos X (FRX), la prueba Frattini e índice de actividad de resistencia. Además, se evaluó la factibilidad de producir Concretos Autocompactantes (CAC) elaborados con CWP. El comportamiento de los CAC preparado con varias relaciones de reemplazo de CWP por CPO (en 0, 10, 20 y 30 %) proveniente de RCD, se evaluaron experimentalmente. Las propiedades de trabajabilidad se determinaron mediante las pruebas de flujo de asentamiento, embudo en V y caja en L. Las propiedades en estado endurecido de los CAC estudiadas incluyeron la resistencia a la compresión, la resistencia a la tracción indirecta, la resistencia a la flexión, la porosidad y la succión capilar. Los resultados experimentales de este trabajo mostraron que el CWP puede ser empleado con éxito como relleno en concretos autocompactantes, a pesar de disminuir la trabajabilidad y la resistencia mecánica. Palabras clave: concreto autocompactante; residuos de demolición y construcción; polvo de residuo de concreto; cemento Portland; trabajabilidad; propiedades mecánicas.

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“…Aliabdo et al [1] have done a comparative research work on the utilization of crushed clay brick in concrete. Kim [2] dealt with the application of waste concrete powder in self-consolidating concrete and its attribute characteristics. An extensive literature [3,4,5,6,7] is dealing with the application of concrete waste as aggregate in asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

Utilization of aluminium dross as asphalt filler

Soos¹,

Géber²,

Tóth³

et al. 2017

Epitoanyag - JSBCM

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Asphalt industry finds itself battling ongoing economic difficulties and an urge to achieve a more sustainable development and growth. it means constant searching is needed for alternative materials and possibilities to use recycled and processed waste materials in asphalt mixes as long as an expected level of performance and durability is provided. Aluminium dross is a recyclable by-product of the casting process of melted aluminium. in this study an attempt was made to reveal the potentials of using aluminium dross as filler for asphalt wearing course mixes. During the research, filler fractions (d<0.063 mm) were prepared by milling and microstructural tests were conducted both on the alternative and control filler for a better understanding of the materials and their composition. the effect of replacing limestone filler with aluminium dross filler on the performance of asphalt mixes was analysed by performance-based and performance related asphalt mechanical tests according to common standards. in the paper, the properties of fillers and various mechanical test results are presented and by interpreting the tests and results final conclusions are presented regarding the use of aluminium dross as filler in asphalt mixes. keywords: asphalt, aluminium dross, filler, rheology, stiffness kulcsszavak: aszfalt, alumínium salak, töltőanyag, reológia, merevség member of the member of the Hungarian scientific Association for transport bella UDvarDi, bSc Graduated in 2017 as material engineer, Bsc. currently working on her msc diploma work.

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Quality properties of self-consolidating concrete mixed with waste concrete powder

Cited by 75 publications

References 13 publications

Influences of Waste Concrete Powder on the Strength Development and Hydration Products of Mortar Containing Fly Ash

Influences of Waste Concrete Powder on the Strength Development and Hydration Products of Mortar Containing Fly Ash

Propiedades Físico-Mecánicas De Concretos Autocompactantes Producidos Con Polvo De Residuo De Concreto

Utilization of aluminium dross as asphalt filler

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