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Performance of Recycled Concrete Aggregates: A New ...

2021-4-15  Mixes are more sustainable when recycled concrete aggregate (RCA) replaces natural aggregates, at least to a degree. A nalyzing Performance of RCA The use of RCA in large-scale concrete production is not yet widely accepted. Challenges include high porosity, inconsistencies in the material and a lack of field studies.

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Performance of recycled aggregate concrete based on a

2015-10-1  A new route for concrete recycling within the European C2CA project is developed. • This novel recycling technology can be performed purely mechanically and in situ. • The process applies ADR to extract high-grade recycled aggregate. • We used ADR recycled aggregates for production of RAC. •

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Performance of Recycled Concrete Aggregates- New Era

2014-12-19  Performance of Recycled Concrete Aggregates- New Era for Use in Construction - A Literature Review Vijay. P. Kukadia1 Dr. R.K.Gajjar2 Dr.D.N.Parkeh3 1Research Scholar 2Principal 3Head of the Department 3Department of Applied Mechanics 1Gujarat Technological University Ahmedabad 2Vishwakarma Govt.Engg.College-Chandkheda 3Government Polytechnic ...

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Performance of recycled aggregate concrete based on a

A new route for concrete recycling within the European C2CA project is developed. • This novel recycling technology can be performed purely mechanically and in situ. • The process applies ADR to extract high-grade recycled aggregate. • We used ADR recycled aggregates for production of RAC. • Results show minor impact of RA on the ...

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Performance enhancement of recycled concrete aggregate

2016-1-20  Recycled concrete aggregate differ from natural aggregate as the former contains hardened cement mortar. The adhered cement mortar on recycled concrete aggregate has higher porosity and water absorption and lower strength than natural aggregate do. ... When a low W/C ratio was used to prepare the new concrete, the new ITZs were less porous than ...

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Performance of Recycled Aggregate Concrete

2009-9-1  aggregate concrete ,the slump test was about 1.0cm slump for 60 % coarse recycled aggregate concrete and increases as the percent of recycled aggregate decreases . The compressive strength of recycled aggregate concrete with 60 % recycled aggregate, is about 76 % of natural aggregate concrete. The compressive strength increases as the

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Performance of concrete with recycled aggregates

2008-6-2  environmental performance and concrete with recycled aggregates. It will be shown that for the most common ordinary concrete, durability is not a topic for much concern, based on results of tests on chloride-ion ingress and freeze-thaw resistance. Keywords: chloride ingress, concrete, freeze-thaw, recycled aggregates, specifications, quality ...

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Performance of Recycled Aggregate Concrete in a Real ...

2018-2-23  Though a large amount of research has been carried out on recycled aggregate concrete (RAC) during recent years, the application cases of RAC in real structures are still very few in China. This paper reports the application of RAC in a real project.

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Performance of recycled concretes exposed to sulphate

2016-1-15  After 2400 days, a modification in the performance of concretes can be observed, where the dynamic modulus of S1R75 concrete decrease faster than for conventional concrete, as detachment of recycled aggregate particles and new mortar increases after this exposure period.

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(PDF) Use of recycled concrete aggregate in concrete: A

Recycled concrete aggregates, oil palm shell, and expanded polystyrene resulted in the increased workability whereas, the addition of ceramic waste and steel slag as coarse aggregates

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(PDF) Recycled aggregates in concrete: a performance ...

Jun. 2020 Magazine of Concrete Research, 2010, 62, No. 7, July, 519–530 doi: 10.1680/macr.2010.62.7.519 Recycled aggregates in concrete: a performance-related approach K. A. Paine* and R. K. Dhir† University of Bath; Applying Concrete Knowledge Ltd/University of Dundee The relative proportions of the three main constituents within recycled ...

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Performance of Pervious Concrete with Recycled Concrete ...

2020-8-19  Methodology. Recycled concrete aggregates are generally more porous than the primary coarse aggregates. The main property of pervious concrete is its permeability, so the part of fine aggregate can be reduced and the part of natural aggregate can be replaced with recycled concrete aggregate to enhance permeability without much affecting the strength of the concrete.

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Structural performance of recycled aggregates concrete ...

Structural performance of recycled aggregates concrete sourced from low strength concrete 79 (b) Fig. 5 Thin section photo with plane-polarized light, X50

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Performance Enhancement of Recycled Concrete

Performance Enhancement of Recycled Concrete Aggregates through Carbonation Jiake Zhang, Ph.D., A.M.ASCE1; Caijun Shi, Ph.D.2; Yake Li3; Xiaoying Pan4; Chi-Sun Poon, Ph.D.5; and Zhaobin Xie6 ...

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Performance of rigid pavements containing recycled ...

2020-10-13  Performance of rigid pavements containing recycled concrete aggregates Jeffrey R. Sturtevant University of New Hampshire, Durham Follow this and additional works at:https://scholars.unh/thesis This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository. It has been

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Effect of Parent Concrete on the Performance of

2020-11-12  For this reason, recycling concrete construction waste to obtain recycled concrete aggregate can lower the environmental impoverishment. Indeed, the use of Construction and Demolition Waste (CDW) as alternative aggregates for new concrete production improves natural resource preservation, reduces landfill disposal, and promotes

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Techniques to Improve the Performance of Recycled ...

Further, this stydy will also consider the difference between the performance of Recycled Aggregate Concrete for different percentages of recycled coarse aggregate and recycled fine aggregate i.e ...

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Utilization of Upgraded Recycled Concrete Aggregates and ...

Waste concrete is the most predominant constituent material among construction and demolition waste. Current waste concrete recycling is limited to the use of recycled concrete aggregates as a road-base material and less as aggregates in new concrete mixes. Further, the production of recycled concrete aggregates results in the generation of a high amount of fines, consisting mainly of cement ...

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(PDF) Performance of Rigid Pavements Containing

PDF State highway agencies in Connecticut, Kansas, Minnesota, Wisconsin, and Wyoming have successfully designed and constructed rigid pavements... Find, read and cite all the research you need ...

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British Standards and the use of recycled aggregate in ...

2021-2-26  recycled concrete aggregates, it will be necessary to ascertain that the original concrete does not contain reactive (or reacting) aggregate and, where the alkali content of the new concrete (or the cement therein) is being limited, the alkali content of the recycled concrete aggregates will need to be determined and taken into account.

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Performance of recycled aggregate concrete based on a

Performance of recycled aggregate concrete based on a new concrete recycling technology. Construction and Building Materials, 95(October), 243-256. ... title = "Performance of recycled aggregate concrete based on a new concrete recycling technology",

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Evaluation of Recycled Aggregates Test Section

2020-5-20  recycled aggregates in new construction. While the use of recycled concrete aggregate (RCA) in the base course of new pavements is quite common in Minnesota and many other states, it is rarely used in the concrete pavement itself. In fact, Minnesota was one of the few states to build multiple trial projects and has one of the largest

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Performance of Recycled Aggregate Concrete in a Real ...

2018-2-23  Though a large amount of research has been carried out on recycled aggregate concrete (RAC) during recent years, the application cases of RAC in real structures are still very few in China. This paper reports the application of RAC in a real project.

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Structural performance of recycled aggregates concrete ...

Structural performance of recycled aggregates concrete sourced from low strength concrete 79 (b) Fig. 5 Thin section photo with plane-polarized light, X50

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Performance of rigid pavements containing recycled ...

2020-10-13  Performance of rigid pavements containing recycled concrete aggregates Jeffrey R. Sturtevant University of New Hampshire, Durham Follow this and additional works at:https://scholars.unh/thesis This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository. It has been

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Performance of concrete made with aggregates recycled

2014-11-9  The aim of this paper is to evaluate the influence of the crushing process used to obtain recycled concrete aggregates on the performance of concrete made with those aggregates. Two crushing methods were considered: primary crushing, using a jaw crusher, and primary plus secondary crushing (PSC), using a jaw crusher followed by a hammer mill. Besides natural aggregates (NA), these two ...

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PERFORMANCE OF RIGID PAVEMENTS CONTAINING

2020-1-28  RECYCLED CONCRETE AGGREGATES BY Jeffrey R. Sturtevant Thesis Director: David. L. Gress University of New Hampshire, December 2007 With the rising cost and dwindling supply of conventional concrete aggregates, recycled concrete aggregate (RCA) is becoming a viable alternative. A performance

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Experimental Study on Recycled Concrete Aggregates

2021-4-15  Key Words: Demolished, concrete waste, recycle, new concrete, fresh coarse aggregate 1. INTRODUCTION Increased concern for environmental protection and for promotion of the principles of sustainable development has led some governments to introduce legislation to encourage the use of recycled aggregates. A favored method is to lower the selling ...

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Laboratory Evaluation of the Performance of Recycled ...

2020-8-20  Nowadays, the rapid growth of waste production and, especially, construction wastes has become one of the main problems in societies. In the world, reinforced concrete structures are destructed for different reasons. These destructions generate increasing values of waste. Furthermore, there are several stone factories in every region that produce a large volume of decorative construction stone ...

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A case study on the viability of using increased ...

2021-5-3  Increase in construction activities leads to increased consumption of natural aggregates resources used in concrete and increased quantity of generated construction and demolishing wastes that are hazardous for the environment. Being a developing country that had faced wars and that owns numerous aged and damaged buildings, North Cyprus still lacks facilities for processing construction

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