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Recycled Aggregate Concrete Journals

Recycled Concrete - an overview | ScienceDirect Topics

The paste on the surface of the recycled aggregates is found to be porous and weak and therefore has negative impact on the quality of concrete or mortar produced using the recycled aggregates. When the recycled concrete aggregates are subjected to accelerated carbonation, the attached cement paste gets carbonated, which involves the reaction ...

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AN INTRODUCTION TO RECYCLED AGGREGATE CONCRETE: …

PDF | To obtain good quality concrete using recycled aggregate it is necessary to follow the minimum requirements defined by the respective Building Standards. Acceptable properties of aggregates ...

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(PDF) IRJET- Recycled Concrete Aggregates | IRJET Journal ...

Structures made up of concrete are when demolished or renovated, concrete recycling is an increasingly common method of utilizing the rubble rather than disposing it in the landfills. Recycling of concrete aggregate is an attractive option in this

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Effects of Recycled Aggregate Characteristics on ...

This study points out the close relationship between several quality indicators of recycled aggregate and the performance of recycled aggregate concrete. Regarding the diversity in quality and composition of the recycled concrete products, three laboratory produced air-entrained-concretes with low, medium and high water-cement ratios and a non ...

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Recycling of PET bottles as fine aggregate in concrete ...

An attempt to substitute in concrete the 5% by weight of fine aggregate (natural sand) with an equal weight of PET aggregates manufactured from the waste un-washed PET bottles (WPET), is presented. The WPET particles possessed a granulometry similar to that of the substituted sand. Specimens with ...

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Use of Recycled Concrete - Scholarlink Research

in recycle aggregate content. The recycled coarse aggregates (RCA) had little influence on the hardened density of concrete and an increase in recycled aggregate content led to a decrease in bleeding capacity. The main drawback of the RCA was the high permeability of the recycled aggregate concrete. The research concludes that

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Use Of Recycled Aggregate In Concrete – IJERT

Brett et al2 (2010) insist that the use of recycled aggregates in concrete is both economically viable & technically feasible. In addition to demolition waste sources, RA can also be composed of excess Concrete materials returned to the plant. Mirza and Saif3 have studied the effect of silica fume on recycled aggregate concrete characteristics.

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International Journal of Engineering Trends and Technology ...

recycled aggregate to 80% recycled aggregate and with more percentage replacement of recycled aggregate used in the concrete specimen, the percentage of tensile strength remained are gradually decreasing. 3. Concrete made with recycled aggregate produced from construction and demolition waste has a compressive strength

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recycled concrete Topic

Jul 01, 2019· Recycled Concrete. Definition: hardened concrete that has been processed for reuse, usually as aggregate.- ACI Concrete Terminology. The reason for recycling is the reduction of waste in order to protect nature against pollution, the increasing shortage of suitable dumping grounds, and to save energy and natural resources.

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Mix Design for Pervious Recycled Aggregate Concrete ...

Nov 27, 2012· Pervious concrete is a tailored-property concrete with high water permeability which allow the passage of water to flow through easily through the existing interconnected large pore structure. This paper reports the results of an experimental investigation into the development of pervious concrete with reduced cement content and recycled concrete aggregate for sustainable permeable pavement ...

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Seismic performance of recycled aggregate–filled ...

In the study in which two different types of recycled aggregates obtained from low-strength waste concrete were used as the backfill materials, the sliding and overturning analyses were conducted for nine cantilever RC retaining walls under seismic or static loads by …

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Recycling of Brick Aggregate Concrete as Coarse Aggregate ...

Jul 07, 2015· 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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Shear strength of reinforced concrete beams with recycled ...

This article presents an experimental program on the shear behavior of beams without transversal reinforcement manufactured with natural aggregate concrete and recycled aggregate concrete. The beams were tested under four-point bending for a shear span-to-depth ratio (a/d) equal to 1.5 and 3.0. The mechanical properties of two mixes were ...

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Use of RECYCLED AGGREGATES In CONCRETE- A Paradigm Shift

This paper reports the results of experimental investigations on recycled aggregate concrete. Properties of Recycled Concrete Aggregate Particle Size Distribution The result of sieve analysis carried out as per IS 2386 for different types of crushed recycled concrete aggregate and natural aggregates.

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Effect of Recycled Coarse Aggregates in Properties of ...

The coarse aggregate in concrete was replaced with 0%, 20%, 40%, 60%, 80% and recycled coarse aggregates. The test results indicated that the replacement of natural coarse aggregates by recycled aggregates up to 40% had little effect on the compressive strength, but higher levels of replacement reduced the compressive strength.

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Effect of Recycled Coarse Aggregate on Concrete Properties ...

Abstract. This research was conducted with the use of recycled aggregate as modification. In terms of the use of recycled aggregate, the percentage of recycled aggregate should be determined because the strength of concrete would not be obtained by the high percentage of recycled aggregate.The scope of study is about comparison between recycle coarse aggregate and natural aggregate in …

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Special Issue "New Trends in Recycled Aggregate Concrete"

In recent years, the amount of construction waste and recycled aggregate has been increasing every year in Korea. However, as the recycled aggregate is poor quality, it is not used for concrete, and the Korean government has strengthened the quality standards for recycled aggregate for concrete.

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Recycled Aggregates Concrete - Articles - Scientific ...

The Behavior of Recycled Concrete through the Application of an Isotropic Damage Model. Marcelo Pedreira da Silva, Magno Teixeira Mota, Anderson de Souza Matos Gadéa, Mônica Batista Leite, Koji de Jesus Nagahama. Open Journal of Civil Engineering Vol.5 No.3. Full-Text HTML XML Pub. Date: September 29, 2015

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

The 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 ...

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Concrete recycling - Wikipedia

If 65% of recycled aggregate or above is used, each physical properties will drop greatly. However, if the portion of recycled aggregate adds to concrete is limited, it won't affect each property much. Based on the research and experiment test, "the maximum replacement of recycled coarse aggregate that can be used in concrete is 35%". Some ...

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AN INTRODUCTION TO RECYCLED AGGREGATE CONCRETE: …

AN INTRODUCTION TO RECYCLED AGGREGATE CONCRETE: PRODUCTION AND APPLICATIONS Piyush Sharma Department of Civil Engineering, Amity School of Engineering & Technology Amity University, Haryana, India Email: [email protected] ABSTRACT To obtain good quality concrete using recycled aggregate it is necessary to follow the minimum requirements defined by …

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Construction Industry Waste Management- An ... - IOSR …

Recycled Aggregate, Recycled Aggregate Concrete. I. Introduction Any construction activity requires several materials such as concrete, steel, brick, stone, glass, clay, mud, wood, and so on. However, the cement concrete remains the main construction material used in construction industries.

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

Aug 24, 2015· 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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International Journal of Engineering Trends and …

recycled aggregate to 80% recycled aggregate and with more percentage replacement of recycled aggregate used in the concrete specimen, the percentage of tensile strength remained are gradually decreasing. 3. Concrete made with recycled aggregate produced from construction and demolition waste has a compressive strength

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Efficient Utilization of Recycled Concrete Aggregate in ...

Mar 03, 2013· 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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Materials | Special Issue : Properties and Novel ...

This Special Issue is open to new experiences in construction materials and/or works made with recycled aggregates, including:-Reclaimed aggregates from returned concrete waste from the washed of the mixer truck (reclaimed aggregates);-Recycled concrete aggregates from crushed old concrete of construction and demolition waste;

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Recycled Aggregate Self-curing High-strength Concrete ...

High strength concrete as a special concrete type has a high strength with extra properties compared to conventional concrete. In this research, the combination of previous three concrete types to obtain self-curing high-strength concrete cast using coarse recycled aggregates is studied.

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Review Article ASSESSMENT OF RECYCLED AGGREGATE …

recycled fine aggregate and recycled coarse aggregate. It also compares these properties with natural aggregates. Basic changes in all aggregate properties were determined and their effects on concreting work were discussed at length. Similarly the properties of recycled aggregate concrete were also determined and explained here.

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Properties of recycled concrete aggregate under different ...

The coarse recycled concrete aggregate was obtained by crushing a laboratory produced primary concrete at age of 28 days. About 250 cubes of dimension 15 ∗ 15 ∗ 15 cm were crushed to produce the recycled coarse aggregates using mix design ().After crushing of these cubes, the maximum nominal size of recycled coarse aggregate used in mixes 2, 3 and 4 was 25 mm.

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Use of Recycled Aggregate Concrete - iosrjournals.org

properties of recycled fine aggregate and recycled coarse aggregate & also compares these properties with natural aggregates. Basic changes in all aggregate properties are determined and their effects on concreting work are discussed at length. Similarly the properties of recycled aggregate concrete are also determined. Basic

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