A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A

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A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A

2020-10-9  Recycled aggregates were obtained from a recycling plant in Hong Kong in which the researcher used 30% replacement together with acid treatment to improve the overall porosity of the RCAs. Before pre-treatment the water absorption percentage of the RA was 1.65%, however after exposure to an acidic environment for 24 hours the water absorption rates significantly reduced.

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A review of recycled aggregate in concrete applications ...

2018-5-30  In Australia, recycled aggregate (both as coarse and as fine aggregate) has been the most common CD waste used in concrete production. About 5.0 million tons of recycled concrete and masonry are available mainly in Sydney and Melbourne, out of which 0.5 million tons is recycled aggregate.

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A review on recycled concrete aggregates (RCA ...

2021-7-19  A review on recycled concrete aggregates (RCA) characteristics to promote RCA utilization in developing sustainable recycled aggregate concrete (RAC) Aamar Danish a Civil Engineering Department, Faculty of Engineering Sciences, National University of Modern Languages, Rawalpindi, Pakistan;b Civil Engineering Department, Cyprus International ...

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Recycled Concrete Aggregates: A Review International ...

2013-3-29  By collecting the used concrete and breaking it up, recycled concrete aggregate (RCA) is created (Fig. 1). This paper focuses on coarse RCA which is the coarse aggregate from the original concrete that is created after the mortar is separated from the rock which is reused.

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(PDF) Recycled Concrete Aggregates: A Review

2013-3-1  Recycled Concrete Aggregates: A Review. Katrina McNeil. 1), and Thomas H.-K. Kang. 2), * (Received December 30, 2012, Accepted January 27, 2013)

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A review of recycled aggregate in concrete applications ...

The main aim of this study is to review the literature on the production and utilisation of recycled aggregate in concrete, concrete pavements, roadway construction, and other civil engineering works and some discussion on the savings on CO 2 emissions have been included. The globally published data on recycled aggregate standards (normative ...

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Durability of recycled aggregate concrete – A review ...

2018-5-1  Recycled aggregate (RA) derived from construction and demolition waste is suitable for partial or entire replacement for virgin aggregate when making new concrete. Using waste concrete as RA could save about 60% of limestone resources and reduce CO2 emissions by about 15%–20% [ 1 ].

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(PDF) Recycled concrete: a review - ResearchGate

The use of grinded aggregates that come from the demolition of hydraulic concrete is used to generate recycled hydraulic concrete, a material that could lessen costs, decrease pollution and ...

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THE IMPROVEMENT OF RECYCLED CONCRETE

2016-6-7  Recycled Concrete Aggregate (RCA), derived from Concrete Demolition waste generally consists of natural coarse aggregate and adhered mortar which makes it porous due to high mortar content, inhomogeneous and less dense [3,4]. The volume of the residual mortar in RA varies from 25% to 60% according to the size of aggregate.

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Utilisation of recycled concrete aggregates for ...

2020-2-28  A review of recycled aggregate in concrete applications (2000–2017) Constr. Build. Mater., 172 (2018), pp. 272-292. Article Download PDF View Record in Scopus Google Scholar. A. Albayati, Y. Wang, Y. Wang, J. Haynes. A sustainable pavement concrete using warm mix asphalt and hydrated lime treated recycled concrete aggregates.

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A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A

Recycled aggregate concrete (RAC), an ecofriendly concrete produced by partial or full substitution of natural aggregates with recycled concrete aggregates in a concrete mix, has drawn much ...

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A review on recycled concrete aggregates (RCA ...

2021-7-19  A review on recycled concrete aggregates (RCA) characteristics to promote RCA utilization in developing sustainable recycled aggregate concrete (RAC) Aamar Danish a Civil Engineering Department, Faculty of Engineering Sciences, National University of Modern Languages, Rawalpindi, Pakistan;b Civil Engineering Department, Cyprus International ...

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[PDF] Recycled Concrete Aggregates: A Review Semantic ...

This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields comparable splitting tensile strength; (2) the modulus of ...

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APPLICATION OF RECYCLED AGGREGATE IN CONCRETE:

2016-12-15  RECYCLED CONCRETE AGGREGATE . Generally, recycled concrete aggregate (RCA) is made by following two-stages, crushing of demolished concrete and screening for the removal of contaminants such as reinforcement, paper, wood, plastics and gypsum (Malešev et al., 2010). A lot of research has been done with respect to the applicability of

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(PDF) Concrete with fine recycled aggregates: A review

Natural and recycled concrete aggregate (NARCA) Single-sized, multi-sized and all-in aggregates a b s t r a c t This paper validates Dewar's particle packing modelling (PPM) theory for ...

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A Review on the Use of Recycled Aggregate in Concrete

2010-9-16  from CD wastes in concrete. The review covers using recycled aggregates on the properties of the resulting concrete and summarizes RILEM and UK specifications governing the use of recycled aggregate in concrete. A case study on using recycled aggregates in a construction project in Hong Kong is used to

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Durability of Recycled Aggregate Concrete: A Review

2017-3-1  Title: Durability of Recycled Aggregate Concrete: A Review Author(s): A.M. Said, A. Ayad, E. Talebi and A.C. Ilagan Publication: Symposium Paper Volume: 314 Issue: Appears on pages(s): 1-18 Keywords: Green construction; Recycled aggregate concrete; Recycled concrete aggregate; Sustainability Date: 3/1/2017 Abstract: The continuous consumption of natural aggregate in concrete

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Performance enhancement of recycled concrete

2021-8-3  Review Performance enhancement of recycled concrete aggregate e A review Caijun Shi a, *, Yake Li b, Jiake Zhang a, Wengui Li a, Linlin Chong a, Zhaobin Xie a, c a College of Civil Engineering ...

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Use of Recycled Concrete Aggregates in Production of

2021-2-26  Review Use of Recycled Concrete Aggregates in Production of Green Cement-Based Concrete Composites: A Review Natt Makul 1, Roman Fediuk 2, Mugahed Amran 3,4,*, Abdullah M. Zeyad 5, Gunasekaran Murali 6, Nikolai Vatin 7, Sergey Klyuev 8,

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Quality Improvement Techniques for Recycled Concrete ...

The main problem in using recycled concrete aggregate (RCA) as a construction material is due to the weak adhered mortar which usually has higher porosity and water absorption. It also has lower strength compared to natural aggregate (NA), and it often forms weak interfacial transition zones in the recycled aggregate concrete (RAC). These weak ...

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A review of recycled concrete aggregates as a sustainable ...

Title: A review of recycled concrete aggregates as a sustainable construction material: Author: Rampit, Rekha (The University of the West Indies, St. Augustine Campus, Faculty of Engineering, Trinidad and Tobago); Smith, Jovanca (The University of the West Indies, St. Augustine Campus, Faculty of Engineering, Trinidad and Tobago); Ray, Indrajit (The University of the West Indies, St. Augustine ...

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A review on recycled concrete aggregates (RCA ...

2021-7-19  A review on recycled concrete aggregates (RCA) characteristics to promote RCA utilization in developing sustainable recycled aggregate concrete (RAC) Aamar Danish a Civil Engineering Department, Faculty of Engineering Sciences, National University of Modern Languages, Rawalpindi, Pakistan;b Civil Engineering Department, Cyprus International ...

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Recycled Concrete Aggregates: A Review

2019-4-9  Recycled Concrete Aggregates: A Review AKSHAYKUMAR P. NAIK Geeta K. Jayraj -----***-----Abstract - This paper discusses the properties of recycled concrete aggregate (RCA), the effects of RCA use on concrete material properties, and the large-scale impact of RCA on structural members etc. The review study from the past

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A Review Paper on use of Recycled Aggregates in Concrete ...

2018-5-31  A. Recycled Aggregate Concrete. Recycling is the act of processing the used material for use in creating a new product. The usage of natural aggregate is getting more and more intense with the advanced development in infrastructure area. Recycled aggregate is comprised of crushed, graded inorganic particles processed.

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A Review Paper on use of Recycled Aggregates in Concrete

2019-7-1  A Review Paper on use of Recycled Aggregates in Concrete Manik Goyal Assistant Professor, Civil Engg Dept, Ch. Devi Lal State Institute of Engineering Technology, ... (2016)[8] Recycled Aggregate presented a review of existing literature work for understanding thoroughly about RCA and the concluded from various studies that Natural ...

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[PDF] Recycled Concrete Aggregates: A Review Semantic ...

This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale impact of RCA on structural members. The review study yielded the following findings in regards to concrete material properties: (1) replacing NA in concrete with RCA decreases the compressive strength, but yields comparable splitting tensile strength; (2) the modulus of ...

Get price

Vol.7, No.1, pp.61–69, March 2013 DOI 10.1007/s40069

2017-8-26  Recycled Concrete Aggregates: A Review Katrina McNeil1), and Thomas H.-K. Kang2),* (Received December 30, 2012, Accepted January 27, 2013) Abstract: This paper discusses the properties of RCA, the effects of RCA use on concrete material properties, and the large scale

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A Review on the Use of Recycled Aggregate in Concrete

2010-9-16  from CD wastes in concrete. The review covers using recycled aggregates on the properties of the resulting concrete and summarizes RILEM and UK specifications governing the use of recycled aggregate in concrete. A case study on using recycled aggregates in a construction project in Hong Kong is used to

Get price

Durability of Recycled Aggregate Concrete: A Review

2017-3-1  Title: Durability of Recycled Aggregate Concrete: A Review Author(s): A.M. Said, A. Ayad, E. Talebi and A.C. Ilagan Publication: Symposium Paper Volume: 314 Issue: Appears on pages(s): 1-18 Keywords: Green construction; Recycled aggregate concrete; Recycled concrete aggregate; Sustainability Date: 3/1/2017 Abstract: The continuous consumption of natural aggregate in concrete

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The influence of the use of recycled aggregates on the ...

2016-1-15  The influence of the use of recycled aggregates on the compressive strength of concrete: a review R.V. Silvaa, J. de Britob* and R.K. Dhirc,d aICIST, Instituto Superior Técnico,Universidade de Lisboa, Lisbon, Portugal; bICIST, Department of Civil Engineering, Architecture and Georresources, Instituto Superior Técnico,Universidade de

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