Recycled concrete aggregate attrition during mixing new

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Recycled concrete aggregate attrition during mixing new ...

30/07/2016  Recycled concrete aggregate (RCA) attrition during mixing was studied in two pilot mixers. •. Mixing parameters and initial RCA properties influenced the breakage rate. •. Both attrition and cleavage mechanisms influenced the aggregate degradation. •. Angularity of the RCA was reduced by the mixing.

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Recycled concrete aggregate attrition during mixing new ...

Recycled concrete aggregate attrition during mixing new concrete. Author links open overlay panel J. Moreno Juez B. Cazacliu A. Cothenet R. Artoni N. Roquet

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Recycled concrete aggregate attrition during mixing new ...

Request PDF Recycled concrete aggregate attrition during mixing new concrete In this work, the recycled concrete aggregate (RCA) friability

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Recycled concrete aggregate attrition during mixing new ...

Recycled concrete aggregate attrition during mixing new concrete Jaime Moreno Juez, Bogdan Cazacliu, Alexis Cothenet, Riccardo Artoni, Nicolas Roquet To cite this version: Jaime Moreno Juez, Bogdan Cazacliu, Alexis Cothenet, Riccardo Artoni, Nicolas Roquet. Recy-cled concrete aggregate attrition during mixing new concrete. Construction and Building

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Recycled concrete aggregate attrition during mixing new ...

Recycled concrete aggregate attrition during mixing new concrete ... understand the evolution of this material during the mixing process and improve the recycled aggregate concrete mix-design. The influence of some important materials and process parameters was evaluated: initial abrasion resistance and initial moisture of the aggregates, mixer geometry,

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Recycled concrete aggregate attrition during mixing new ...

The mass loss directly depends on the mixing parameters and the degradation of the recycled concrete aggregate drastically increased when the mixing speed was raised to 500 RPM. By analyzing the grading evolution during mixing, it was shown that both cleavage (creation of intermediate size particles) and attrition (creation of small particles) mechanisms influenced

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Type of the Paper (Article

Simulation of the Attrition of Recycled Concrete Aggregates during Concrete Mixing Jaime Moreno-Juez 1,2, Luís Marcelo Tavares 3, Riccardo Artoni 2,*, Rodrigo M. de Carvalho 3, Emerson Reikdal da ...

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Recycled concrete aggregate attrition during mixing new ...

Recycled concrete aggregate attrition during mixing new concrete ... understand the evolution of this material during the mixing process and improve the recycled aggregate concrete mix-design. The influence of some important materials and process parameters was evaluated: initial abrasion resistance and initial moisture of the aggregates, mixer geometry,

Get price

Recycled concrete aggregate attrition during mixing new ...

The mass loss directly depends on the mixing parameters and the degradation of the recycled concrete aggregate drastically increased when the mixing speed was raised to 500 RPM. By analyzing the grading evolution during mixing, it was shown that both cleavage (creation of intermediate size particles) and attrition (creation of small particles) mechanisms influenced

Get price

Simulation of the Attrition of Recycled Concrete ...

Abstract: Concrete mixing can lead to mechanical degradation of aggregates, particularly when dealing with recycled concrete aggregates. In this work, the attrition of such materials during mixing is studied by means of experiments and simulations. The effect of

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[PDF] Simulation of the Attrition of Recycled Concrete ...

Concrete mixing can lead to mechanical degradation of aggregates, particularly when dealing with recycled concrete aggregates. In this work, the attrition of such materials during mixing is studied by means of experiments and simulations. The effect of the presence of fines, water addition, flow configuration of the mixer (co- or counter-current) and impeller frequency is

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Simulation of the Attrition of Recycled Concrete ... - MDPI

01/06/2021  Concrete mixing can lead to mechanical degradation of aggregates, particularly when dealing with recycled concrete aggregates. In this work, the attrition of such materials during mixing is studied by means of experiments and simulations. The effect of the presence of fines, water addition, flow configuration of the mixer (co- or counter-current) and impeller

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Simulation of the Attrition of Recycled Concrete ...

Concrete mixing can lead to mechanical degradation of aggregates, particularly when dealing with recycled concrete aggregates. In this work, the attrition of such materials during mixing is studied by means of experiments and simulations. The effect of the presence of fines, water addition, flow configuration of the mixer (co- or counter-current) and impeller frequency is

Get price

Recycled Concrete Aggregate Crushed Concrete Aggregate ...

Recycled Concrete Aggregate is that the use of debris from dismantled concrete structures. utilization is cheaper and a lot of ecological than truckage debris to a lowland.. Crushed debris is often used for road gravel, revetments, holding walls, landscaping gravel, or staple for brand spanking new concrete. giant items are often used as bricks or slabs or incorporated with

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Ways to Recycle and Reuse Concrete - The Balance Small ...

07/01/2019  Aggregate for mixing new concrete: Crushed concrete can replace some of the virgin (new) aggregate used in ready-mix concrete. Controlling streambank erosion: Larger pieces of crushed concrete placed along vulnerable stream banks or gullies can help control erosion. Landscaping mulch: When properly crushed and well sorted, ground concrete can

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Aggregates for Concrete - Greenspec

Key points. • ‘Aggregate’ is a term for any particulate material. It includes gravel, crushed stone, sand, slag, recycled concrete and geosynthetic aggregates. Aggregate may be natural, manufactured or recycled. • Aggregates make up some 60 -80% of the concrete mix. They provide compressive strength and bulk to concrete.

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The equivalent mortar volume method in the manufacturing ...

[34] Juez J. M., Cazacliu B., Cothenet A., Artoni R., Roquet N., Recycled concrete aggregate attrition during mixing new concrete, Construction and Building Materials 116/2016, 299–309. [35] Michael J. McGinnis, Mark Davis, Andres de la Rosa, Brad D. Weldon, Yahya C. Kurama, Strength and stiffness of concrete with recycled concrete aggregates, Construction and

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Recycled concrete aggregate attrition during mixing new ...

The mass loss directly depends on the mixing parameters and the degradation of the recycled concrete aggregate drastically increased when the mixing speed was raised to 500 RPM. By analyzing the grading evolution during mixing, it was shown that both cleavage (creation of intermediate size particles) and attrition (creation of small particles) mechanisms influenced

Get price

Simulation of the Attrition of Recycled Concrete ...

Concrete mixing can lead to mechanical degradation of aggregates, particularly when dealing with recycled concrete aggregates. In this work, the attrition of such materials during mixing is studied by means of experiments and simulations. The effect of the presence of fines, water addition, flow configuration of the mixer (co- or counter-current) and impeller frequency is

Get price

Aggregates for Concrete - Greenspec

Key points. • ‘Aggregate’ is a term for any particulate material. It includes gravel, crushed stone, sand, slag, recycled concrete and geosynthetic aggregates. Aggregate may be natural, manufactured or recycled. • Aggregates make up some 60 -80% of the concrete mix. They provide compressive strength and bulk to concrete.

Get price

Ways to Recycle and Reuse Concrete - The Balance Small ...

07/01/2019  Aggregate for mixing new concrete: Crushed concrete can replace some of the virgin (new) aggregate used in ready-mix concrete. Controlling streambank erosion: Larger pieces of crushed concrete placed along vulnerable stream banks or gullies can help control erosion. Landscaping mulch: When properly crushed and well sorted, ground concrete can

Get price

Evaluation of Recycled Concrete for Use as Aggregate in ...

It was a goal during the mix process to make concrete mixtures within the low end of each of those ranges. Slump was controlled by withholding mix . x water or adding water-reducing admixture (WRA), and air content was controlled by the amount of air entraining admixture used in the batch. RCA was found to decrease the slump and density of fresh concrete. RCA had

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Concrete Recycling - KB Crushers

At KB Crushers, we excel in concrete recycling, turning old hardcore and concrete into new aggregate materials; suitable for backfilling, foundations and mixing into new concrete. Disposing of large quantities of inert waste can prove particularly challenging and costly. With our modern fleet of heavy machinery, KB Crushers removes concrete, brick, glass and other

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NEAR ZERO WASTE USING RECYCLED OF CRUSHED CONCRETE ...

aggregate in hot-mix asphalt with waste concrete aggregate was investigated and the result suggest feasible use of waste concrete as partial aggregate substitution in asphalt concrete mixtures[8,9]. Recycled fine aggregates powder was used in asphalt concrete mixtures. Recycled fine aggregates powder is a by-product of the production of recycled concrete

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The equivalent mortar volume method in the manufacturing ...

[34] Juez J. M., Cazacliu B., Cothenet A., Artoni R., Roquet N., Recycled concrete aggregate attrition during mixing new concrete, Construction and Building Materials 116/2016, 299–309. [35] Michael J. McGinnis, Mark Davis, Andres de la Rosa, Brad D. Weldon, Yahya C. Kurama, Strength and stiffness of concrete with recycled concrete aggregates, Construction and

Get price

Abrasive wear and optimal installation angle of concrete ...

12/05/2020  Juez et al. studied the friability of recycled concrete aggregate (RCA) during mixing to gain an improved understanding the evolution of this material during mixing and improve the design of recycled aggregate concrete mixtures . Bouzoubaa studied the mechanical properties and durability of concrete made from high-volume fly ash (HVFA)

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Specifying Sustainable Concrete to BS 8500

• Temperature of the fresh concrete • Heat development during hydration. 13 Concrete constituents Approx. proportions of A typical concrete mix Reinforcement Admixture Air 1.5% Cement 10% Water 18.5% Fine Aggregate (sand) 25% Course aggregate (stone/gravel) 45% 1. Specify low carbon cements • Portland cement contributes the majority of ECO2 to concrete •

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