ournals related to optimization of recycled aggregate concrete mixture

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Aggregate in Concrete - The Concrete Network

Recycled concrete will have a higher absorption and lower specific gravity than conventional aggregates. To produce good quality, durable concrete containing a portion of recycled concrete aggregate often requires trial concrete mixes and close monitoring of the properties of the old recycled concrete, with mix adjustments made, as needed.

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COMPARISON OF RECYCLED GLASS AND RECYCLED CONCRETE ...

For this purpose, 9 different mortar mixtures were prepared by replacing 25, 50, 75 and 100 wt.% of crushed-limestone fine aggregate with recycled glass and recycled concrete aggregates. Except for the abrasion resistance, the RG mixtures showed better durability performance than the control mixture.

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Research Article Optimizing the Mixing Proportion with ...

is research aims to optimize the mixing proportion of recycled aggregate concrete (RAC) using neural networks (NNs) based on genetic algorithms (GAs) for increasing the use of recycled a ggregate (RA). NN and GA were used to predict the compressive strength of the concrete at days.

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Efficient Utilization of Recycled Concrete Aggregate in ...

 · In Singapore, the applications of recycled concrete aggregate (RCA) are limited to nonstructural concrete, road construction, and backfilling. To realize the beneficial use of RCA, an in-depth study was conducted to evaluate its use in structural concrete.

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Establishing a relationship between modulus of elasticity ...

 · Read "Establishing a relationship between modulus of elasticity and compressive strength of recycled aggregate concrete, Journal of Cleaner Production" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at …

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CHARACTERIZATION OF A FIBRE-REINFORCED SELF- …

concrete aggregates with recycled aggregates [2–5]. ... optimization of execution times due to the partial or total elimination of the prestressed rein - forcement and the increased post-cracking energy of the concrete, leading to more suitable ... 2.2 Mixing Method and Fresh State Characterization

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Mix Design and Properties of Recycled Aggregate Concretes ...

At fresh state, the mix design of concrete with recycled aggregates requires an additional quantity of water to obtain a similar workability as a concrete formulated with natural aggregates (Hansen and Boegh 1986). Such a modification may obviously affect the mechanical characteristics of recycled aggregates concrete.

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Optimization on proportion for recycled aggregate in ...

Optimization on proportion for recycled aggregate in concrete using two-stage mixing approach. ... In order to improve the quality of recycled aggregate concrete, a mixing method: ... accumulation, and optimization. The crystallization of concrete is, however, a complex physical–chemical process affected by many ingredients that are hard to ...

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Recycling of Brick Aggregate Concrete as Coarse Aggregate ...

Based on this investigation, it is revealed that recycled brick aggregate can be used as coarse aggregate for making concrete of strength 20.7 to 31.0 MPa. For the same mix design, the recycled aggregate concrete produces almost similar strength compared with the first class brick aggregate concrete commonly used in Bangladesh.

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WULSOH PL[LQJPHWKRG Thulasirajan Krishnan and Revathi

on recycled concrete aggregate and those based on natural aggregate as far as the cement is used for coating. When using both the fly ash and recycled concrete powder, the kind of aggregate causes more significant differences in compressive strength, with the values of those based on the recycled concrete aggregate being worse. 1.

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Optimization of mechanical properties of polymer concrete ...

 · Chan‐Yong Sung and Young‐Ik Kim, Void ratio and durability properties of porous polymer concrete using recycled aggregate with binder contents for permeability pavement, Journal of Applied Polymer Science, 126, S2, (E338-E348), (2012).

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Recycled Concrete - Aggregate | TERRAZZCO® Brand Products

RECYCLED CONCRETE . With a mixture of different colors, these aggregates work well with any terrazzo floor. Recycled Concrete is available through TERRAZZCO® Brand Products. Aggregate chips come in a variety of different hardness, sizes, and colors, all …

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miand design of recycled aggregate concrete

Using concrete crushed to mini concrete. using crushed concrete to miand concrete in us The new concrete mix was made using crushed recycled concrete aggregate for both the coarse aggregate and sand, Technical Advisory T 5040.37 Use of Recycled Concrete . Journals Related To Optimization Of Recycled Aggregate .

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Mix Design and Properties of Recycled Aggregate Concretes ...

 · At fresh state, the mix design of concrete with recycled aggregates requires an additional quantity of water to obtain a similar workability as a concrete formulated with natural aggregates (Hansen and Boegh 1986). Such a modification may obviously affect the mechanical characteristics of recycled aggregates concrete.

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Mix Design and Properties of Recycled Aggregate Concretes ...

At fresh state, the mix design of concrete with recycled aggregates requires an additional quantity of water to obtain a similar workability as a concrete formulated with natural aggregates (Hansen and Boegh 1986). Such a modification may obviously affect the mechanical characteristics of recycled aggregates concrete.

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Optimization of Steam-Curing Regime for Recycled Aggregate ...

For instance, the mix ID M-R-70-2 refers to the concrete mix incorporating HESC as the primary binder, and the recycled aggregate blend (both for coarse and fine aggregates), with the maximum temperature of the steam-curing cycle set at 70 °C, maintained for two hours.

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Compressive Strength of Concrete with Recycled Glass as ...

In this study, recycled glass is used to replace the natural fine aggregate in different mix proportions to obtain the optimum combination that will produce the highest strength. The control samples are Grade 30 ordinary Portland cement concrete (OPCC) containing natural sand and coarse aggregate. The recycled glass concretes contain 70% natural fine aggregate + 30% size 300 micron ...

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aggregate Topic - American Concrete Institute

 · Aggregates are the major constituent (ingredient) in concrete, making up 60% to 70% of the volume of concrete. Aggregates influence the workability of plastic concrete and also the durability, strength, thermal properties, and density of hardened concrete. Particle size divides aggregates into two categories: fine and coarse. Most fine aggregates are sand and contain particles smaller than 3/8 ...

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Use of recycled concrete aggregate in concrete: a review ...

AbstractThe use of recycled concrete aggregate (RCA) in concrete as partial and full replacements of natural coarse aggregate is growing interest in the construction industry, as it reduces the demand for aggregate. In addition, the use of RCA leads to a possible solution to the environmental problem caused by concrete waste and reduces the negative environmental impact of the aggregate ...

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Optimal proportioning for hot recycled mix design under ...

The present paper develops a generalized formulation for preliminary constituent proportioning of hot recycled mix following Superpave criteria. Through this formulation an optimal solution for mix proportion can be obtained, where the total material cost is minimized while satisfying all the binder and mix property requirements.

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Eco Concrete Competition

The objective of this competition is to design a concrete mix using an alternative material with low environmental impacts while preserving good mechanical properties AND good durability. Functional Unit The functional unit is the production of one cubic meter of concrete mixture complying with rules mentioned in sections 2.2 and 2.3.

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Effects of Recycled Aggregate on Concrete Mix and Exposure ...

Compressive strength decreased with the increase in the recycled aggregate content, and a concrete mix with 40% recycled aggregate exhibited the best strength. Concrete mix with 30% recycled aggregate had the lowest chloride penetration after 2 weeks of saturation and performed better than a concrete mix with natural aggregate.

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Compressive Strength of Concrete Using Recycled Concrete ...

recycled aggregate, [8] found out that the compressive, tensile and flexural strength properties decreased as the proportion of mixed recycled aggregate increased. According to [9], recycled aggregate concrete is just as durable as ordinary concrete. However, [10] recommends that prior to the use of RA concrete in

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Optimization of Steam-Curing Regime for Recycled Aggregate ...

For instance, the mix ID M-R-70-2 refers to the concrete mix incorporating HESC as the primary binder, and the recycled aggregate blend (both for coarse and fine aggregates), with the maximum temperature of the steam-curing cycle set at 70 °C, maintained for two hours.

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US8921463B1 - Synthetic aggregate for use in concrete ...

The synthetic aggregate for use in concrete is a composite material of recycled plastic having a filler encapsulated in the plastic. The synthetic aggregate includes between 30% and 50% recycled shredded plastic, the balance being filler. The plastic may be linear low-density polyethylene (LLDPE). The filler can include red sand, fly ash and quarry fines.

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Recycled Concrete - Aggregate | TERRAZZCO® Brand Products

RECYCLED CONCRETE . With a mixture of different colors, these aggregates work well with any terrazzo floor. Recycled Concrete is available through TERRAZZCO® Brand Products. Aggregate chips come in a variety of different hardness, sizes, and colors, all …

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(PDF) Use of Plastic Waste in Concrete Mix | IRJET Journal ...

In this material, and aggregate of concrete. Recycling of plastic research, high density polyethylene waste is mixed with waste material in concrete has many profit and advantages Portland cement to examine the option to make plastic since it is broadly used and has a long service life, which cement, and learn the outcome of replacing sand by ...

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Life Cycle Assessment of Natural and Recycled Concrete ...

The environmental impacts of natural aggregates (NA) and recycled concrete aggregates (RCA) production for use in road pavements have been evaluated in this study through an attributional life cycle assessment (LCA) from cradle to gate.

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Sustainable Construction: Use of Recycled Concrete Aggregate

This paper describes the development of mix design procedures for high performance concrete mixes containing recycled construction waste. Established mix design procedures were used initially to proportion recycled aggregate concrete (RAC) mixes. Findings from initial trials were then used to modify the current mix design techniques to produce ...

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Modulus of elasticity of recycled aggregate concrete ...

The compressive strength of recycled aggregate concrete was found to range between 18 and 65 MPa, and therefore a prediction equation is proposed for recycled aggregate concrete that considers the ratio and types of recycled coarse aggregates used.

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