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Review Article ASSESSMENT OF RECYCLED AGGREGATE

Journal of Engineering Research and Studies E-ISSN 0976-7916 JERS/Vol.II/ Issue I/January-March 2011/1-9 Review Article ASSESSMENT OF RECYCLED AGGREGATE CONCRETE Parekh D. N.1 and Dr. Modhera C. D.2 Address for Correspondence 1Research Scholar; Applied Mechanics Department; Sardar Vallbhbhai

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Durability Studies on the Recycled Aggregate Concrete in

Since China hosted the Olympic Games in 2008, a mass of construction and demolition (C&D) wastes were produced with the rapid urbanization construction. Recycling the C&D waste into recycled aggregates (RA) is an effective method for reducing the amount of C&D wastes. Many studies on the properties of RA and the durability of recycled aggregate concrete (RAC) were conducted in China

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Special Issue "New Trends in Recycled Aggregate Concrete"

The environmental impact of recycled aggregate (wet) was up to 16~40% higher compared with recycled aggregate (dry); the amount of energy used by impact crushers while producing wet recycled aggregate was the main cause for this result.

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Effect of recycled coarse aggregate on SAGE Journals

Oct 16, 2020· Knaack, AM, Kurama, YC (2014) Behavior of reinforced concrete beams with recycled concrete coarse aggregates. Journal of Structural Engineering 141(3): B4014009. Google Scholar. Lau, TL, Elleithy, W, Choong, WK, et al. (2014) Effects of recycled aggregates on concrete strengths.

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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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Resistance of Recycled Aggregate Concrete (RAC) Subjected

Recycled aggregates were widely used in the concrete industry as a replacement of natural aggregates in the last two decades. In this study, the resistance of concrete mixtures having various levels of recycled aggregate as a replacement of natural coarse aggregate to the attack of magnesium and sodium sulfates was investigated. Five mixtures made with 0%, 25%, 50%,

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Mechanical Performance of Concrete Made with Recycled

This research aims at analysing the mechanical performance of concrete with recycled aggregates from concrete pavements. First, the characteristics of various natural and recycled aggregates used in the concrete were thoroughly analysed. The composition of the recycled aggregates was determined and several physical and chemical tests of the aggregates were performed.

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Effect of recycled coarse aggregate on SAGE Journals

Oct 16, 2020· Knaack, AM, Kurama, YC (2014) Behavior of reinforced concrete beams with recycled concrete coarse aggregates. Journal of Structural Engineering 141(3): B4014009. Google Scholar. Lau, TL, Elleithy, W, Choong, WK, et al. (2014) Effects of recycled aggregates on concrete strengths.

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Assessing the role and use of recycled aggregates in the

Jan 09, 2020· Braga, AM, Silvestre, JD, de Brito, J (2017) Compared environmental and economic impact from cradle to gate of concrete with natural and recycled coarse aggregates. Journal of Cleaner Production 162: 529 543. Google Scholar Crossref

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Suitability Investigation of Recycled Concrete Aggregates

J. Sharma and S. Singla, “Influence of recycled concrete aggregates on strength parameters of concrete,” SSRG International Journal of Civil Engineering, vol. 1,

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Recycled aggregates ScienceDirect

Jan 01, 2018· 3.8. Effect of recycled aggregates on the fresh concrete properties. The external aspects of the fresh concrete made of RA compared with that made of NA are similar. The fresh density is slightly reduced and entrained air increased by about 0.6% (Kenai et al., 2002). Kumar (2017) reported reduction of the fresh density of the concrete mixes by

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Recycled aggregates from construction and demolition

May 10, 2020· Some recycled aggregate samples from CDW were taken for the laboratory tests. Table 2 lists their basic engineering and physical properties. Based on the category method of subgrade soils described in Test Method of Soils for Highway Engineering (JTG E40-2007, China MOT, 2007), the recycled CDW aggregates were classified as poorly graded gravel

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Use Of Recycled Aggregate In Concrete IJERT Journal

Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in a large number of construction projects of many European, American, Russian and Asian countries.

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Recycled Concrete Aggregate an overview ScienceDirect

Recycled concrete aggregate (RCA) is the designation used in BS 8500-2 for recycled aggregate principally comprising crushed concrete. Designations of recycled aggregate other than RCA are of lower quality and may contain significant quantities of masonry which would preclude or limit their use in structural concrete.

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Recycling of Concrete (Recycling Coarse Aggregate) IJERT

Recycled aggregates are a way of reusing materials by keeping them from being disposed into landfills [1]. Recycling of concrete is a simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality.

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Use of recycled concrete aggregate in concrete: a review

(2013). Use of recycled concrete aggregate in concrete: a review. Journal of Civil Engineering and Management: Vol. 19, No. 6, pp. 796-810.

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Assessing the role and use of recycled aggregates in the

Huda, SB, Alam, MS (2015) Mechanical and freeze–thaw durability properties of recycled aggregate concrete made with recycled coarse aggregate. Journal of Materials in Civil Engineering 27: 04015003 .

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Concrete with fine recycled aggregates: a review: European

(2014). Concrete with fine recycled aggregates: a review. European Journal of Environmental and Civil Engineering: Vol. 18, No. 2, pp. 129-172.

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Sustainability Special Issue : Recycled Construction

Recycling and reusing C&D wastes such as recycled aggregates (RAs) is one of the most common circular treatments of C&D waste. Circular treatment of C&D waste can be studied from different disciplinary perspectives, such as the generation of new cementitious materials (Xu et al., 2020), the marketing of recycled products (Huang et al., 2018

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Recycled Concrete Aggregate an overview ScienceDirect

Recycled concrete aggregate (RCA) is the designation used in BS 8500-2 for recycled aggregate principally comprising crushed concrete. Designations of recycled aggregate other than RCA are of lower quality and may contain significant quantities of masonry which would preclude or limit their use in structural concrete.

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Recycled aggregates ScienceDirect

Jan 01, 2018· 3.8. Effect of recycled aggregates on the fresh concrete properties. The external aspects of the fresh concrete made of RA compared with that made of NA are similar. The fresh density is slightly reduced and entrained air increased by about 0.6% (Kenai et al., 2002). Kumar (2017) reported reduction of the fresh density of the concrete mixes by

Get Price

Recycled aggregates from construction and demolition

May 10, 2020· Some recycled aggregate samples from CDW were taken for the laboratory tests. Table 2 lists their basic engineering and physical properties. Based on the category method of subgrade soils described in Test Method of Soils for Highway Engineering (JTG E40-2007, China MOT, 2007), the recycled CDW aggregates were classified as poorly graded gravel

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(PDF) Recycled Aggregates: A Sustainable Solution of

The recycled aggregates used were classified into three different types according to their measured specific gravity and water absorption, namely, RG I for recycled coarse aggregate having a

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Materials Special Issue : Properties and Novel

Materials, an international, peer-reviewed Open Access journal. Journals. Information. For Authors For Reviewers For Editors For Librarians For Publishers For Societies. Article Processing Charges Open Access Policy Institutional Open Access Program Editorial Process Awards Research and

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Assessing the role and use of recycled aggregates in the

Jan 09, 2020· Braga, AM, Silvestre, JD, de Brito, J (2017) Compared environmental and economic impact from cradle to gate of concrete with natural and recycled coarse aggregates. Journal of Cleaner Production 162: 529 543. Google Scholar Crossref

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Upgrading the Quality of Recycled Aggregates from

Mixed recycled aggregates (MRA) from construction and demolition waste (CDW) with high-purity and environmental performance are required for highway construction application in base layer and precast concrete curbs. The main problematic constituents that reduce the quality level of the recycled aggregates applications are brick components, flaky particles, and attached mortar, which make up a

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Recycling of Concrete (Recycling Coarse Aggregate) IJERT

Recycled aggregates are a way of reusing materials by keeping them from being disposed into landfills [1]. Recycling of concrete is a simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality.

Get Price

International Journal of Concrete Technology

Kou S.C., C-S P, F A. Comparisons of natural and recycled aggregate concretes prepared with the addition of different mineral admixtures. Cem Concr Compos. 2011; 33: 788–95p. Soares D., de Brito J., Ferreira J., et al. Use of coarse recycled aggregates from precast concrete rejects : mechanical and durability performance.

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Use Of Recycled Aggregate In Concrete IJERT Journal

recycled aggregate produced only 0.0024 million ton carbon is produced. Considering the global consumption of 10 billion tons/year of aggregate for concrete production, the carbon footprint can be determined for the natural aggregate as well as for the recycled aggregate. The use of recycled aggregate generally increases

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Assessing the role and use of recycled aggregates in the

Huda, SB, Alam, MS (2015) Mechanical and freeze–thaw durability properties of recycled aggregate concrete made with recycled coarse aggregate. Journal of Materials in Civil Engineering 27: 04015003 .

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Recycling of Brick Aggregate Concrete as Coarse Aggregate

Jul 07, 2015· Also, in-situ strength of an old structure has been compared with the compressive strength of recycled aggregate concrete made with the recycled aggregate collected from the same structure. 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.

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Indian Concrete Journal

Detailed assessment of the technical properties of recycled aggregates from mixed C&D waste Christian J. Engelsen, Sandeep K. Malhotra, Gaurav Bhatiani, Kshemendra Nath P. View Abstract A study on the use of construction and demolition waste as coarse aggregate in self-compacting concrete for sustainability S. Girish, N. Ajay, Sasha Azimi View

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

recycled aggregate as a component of concrete, there is a limit so that a coarse fraction of recycled aggre-gate whose absorption is not higher than 7%, and fine fractions whose absorption goes up to 13% [8], i.e. 10% can be used for the production of concrete.

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Effect of recycled concrete aggregates on strength and

This paper presents an experimental investigation on the use of recycled concrete aggregate (RCA) as a replacement for natural coarse aggregates (such as crushed limestone and gravel) in precast, prestressed concrete structures.

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(PDF) Recycled Aggregates: A Sustainable Solution of

The recycled aggregates used were classified into three different types according to their measured specific gravity and water absorption, namely, RG I for recycled coarse aggregate having a

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Use Of Recycled Aggregate In Concrete IJERT Journal

recycled aggregate produced only 0.0024 million ton carbon is produced. Considering the global consumption of 10 billion tons/year of aggregate for concrete production, the carbon footprint can be determined for the natural aggregate as well as for the recycled aggregate. The use of recycled aggregate generally increases

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(PDF) Self-compacting concrete with recycled aggregates

Journal of Building Engineering 22; DOI: 10.1016/j.jobe.2019.01.001. The subject of self-compacting concrete with recycled aggregates (RASCC) is greatly relevant to Society, since there is an

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The influence of the use of recycled aggregates on the

This paper provides a systematic review of 119 publications, selected from 235, published over a period of 36 years from 1978 to 2014, relating to the effect on concrete compressive strength of the various aspects related to the use of recycled aggregates (RA) such as replacement level, size, origin, moisture content, exposure of the resulting concrete to different environmental conditions

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Behaviour of Recycled Aggregate Concrete on exposed to

mechanical properties of various Recycled aggregate concretes are explained Here w/c ratio 0.27 and 0.36 with replacement of 0%, 30%, 35%, 40%, 45% and 50% of Natural aggregates by Recycled aggregates are taken into consideration. Here 35 specimens (Cubes, Cylinder and prism) for

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Research Article CHARACTERIZATION OF RECYCLED

the recycled aggregate is the component of attached cement mortar with the original aggregate. This component of attached cement mortar has significant bearing on most of the properties of recycled aggregate. All of the above parameters or the properties of recycled aggregates

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PDF Open Access Recycled concrete: a review

Aug 18, 2015· ALCONPAT Journal, Volume 5, Issue 3, September December 2015, Pages 224 The use of aggregates that originate from recycled concrete also allow for these .

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

recycled aggregate as a component of concrete, there is a limit so that a coarse fraction of recycled aggre-gate whose absorption is not higher than 7%, and fine fractions whose absorption goes up to 13% [8], i.e. 10% can be used for the production of concrete.

Get Price

Recycling of Concrete (Recycling Coarse Aggregate) IJERT

Recycled aggregates are a way of reusing materials by keeping them from being disposed into landfills [1]. Recycling of concrete is a simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality.

Get Price

Strength and Durability Evaluation of Recycled Aggregate

May 14, 2015· This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.

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(PDF) Design of Road Pavement Using Recycled Aggregate

The recycled aggregates, as well as natural stone aggregates, h ave to meet the geometrical, physical and chemical characteristics, and the portion of the constituents in the material and the

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International Journal of Concrete Technology

Kou S.C., C-S P, F A. Comparisons of natural and recycled aggregate concretes prepared with the addition of different mineral admixtures. Cem Concr Compos. 2011; 33: 788–95p. Soares D., de Brito J., Ferreira J., et al. Use of coarse recycled aggregates from precast concrete rejects : mechanical and durability performance.

Get Price

Strength and durability of concrete containing recycled

Sep 01, 2018· Recycled concrete aggregates (RCA) sourced from waste concrete are a sustainable alternative to natural crushed stone aggregates. The strength and durability properties of concrete containing RCA were evaluated by a comprehensive experimental investigation involving

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