Quality Improvement Techniques for Recycled Concrete Aggregate: A review Wafaa Mohamed Shaban1, Jian Yang2*, Haolin Su3, Kim Hung Mo4, Lijuan Li5 and Jianhe Xie6 Received 26 December 2018, accepted 10 April 2019 2 ...
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 research yielded the following conclusions in regards to
Recycled concrete aggregate (RCA) is generally produced by two-stage crushing of demolished concrete, and screening and removal of contaminants such as reinforcement, paper, wood, plastics and gypsum. Concrete made with such recycled concrete aggregate is called recycled aggregate concrete (RAC). The main purpose of this work is to determine
Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 years. This paper provides a comprehensive review of the related findings of research on the mechanical properties of RAC in China. The ...
This study evaluated the use of recycled concrete as coarse aggregate in new concrete pavements. Recycled concrete aggregate (RCA) produced from demolished pavements in three geographically-dispersed locations in Washington state were used to perform testson aggregate characte ristics, fresh concrete propertiesand hardened concrete properties.
Therefore, it makes economic and environmental sense to use recycled materials in the making of new concrete for different applications. The objectives of this study are to summarize published research on the use of recycled concrete aggregates in new concrete mixes and examine its implementation in construction and industry in the GCC region.
The paper reviews the production and utilisation of recycled aggregate in concrete. • Critically analysed the globally published data on recycled aggregate standards. • This review may help to alleviate the concerns of consumers. • This paper can encourage and further promote the use of recycled aggregate.
Apr 13, 2020 · Every year, a significant amount of waste is generated in ready-mix concrete (RMC) plants. Further, the environmental and economic consequences of the…
Purpose: This paper aims to review the effect of using recycled aggregates (RA) on the properties of recycled aggregate concrete (RAC) following the steady rise in global demand for concrete and the large generation of construction and demolition waste.
Finally, it should be noted that Sharma and Pal Bansal published a review on different aggregate shapes of recycled plastic waste in concrete, such as particles (shredded and melted) and fibres . However, two important gaps in this research are the analysis of
 F. Jincai, G. Yanrong and X. Qun et al, Main research progress and development trend on carbonation behavior of recycled concrete, Concrete, Number 1 in 2014(No. 291) 41-45(In Chinese).  Yan hongsheng, Experimental study on recycled aggregate concrete sulfate at tack, Concrete, Number 5 in 2013（Total No. 283）, 13-15(In Chinese).
2.3 Recycled fine aggregate Crushed concrete aggregates also called as recycled concrete aggregates are fragments and pieces of concrete buildings which are demolished or rebuild. These crushed concrete are cleaned from dirt and broken to smaller pieces to manufacture aggregate which is termed as recycled aggregate.
2013/12/24 · 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 ...
CA20) and recycled aggregate from 15 year old concrete building. MasterGlenium SKY 8233 was used as . International Journal of Engineering Research & Technology (IJERT) IJERTIJERT ISSN: 2278-0181 IJERTV3IS090092 www.ijert.org (This work is licensed under a Creative Commons Attribution 4.0 International License.) Vol. 3 Issue 9, September- 2014
Many studies on the properties of RA and the durability of recycled aggregate concrete (RAC) were conducted in China over the past decade. Due to the restrictions of various languages, some valuable studies on the durability of RAC are hard to be acquired by the scholars around the world.
TY - JOUR T1 - The potency of recycled aggregate in new concrete: A review AU - Anike, Emmanuel Ejiofor AU - Saidani, Messaoud AU - Ganjian, Esmaiel AU - Tyrer, Mark AU - Olubanwo, Adegoke PY - 2019/10/7 Y1 - 2019
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 ...
strength of recycled-aggregate concrete was found showing that 15% lower elastic modulus is achieved by using 30% recycled aggregates. Finally, on the basis of the results obtained it seems that, particularly if finer coarse recycled-concrete aggregate is used,
complete replacement of natural aggregates with recycled concrete aggregate ran ges from 11% to 33%. RCA can replace NA in the production of both non -structural and structural concrete. Patil.et.al. (2013), this study aimed to evaluate physical properties of concrete using recycled coarse aggregate. In this research, concrete waste fr om
In this study, research was conducted on the mechanical and durability characteristics of concrete using recycled aggregate, after developing equipment to improve the quality of recycled aggregate to increase the use of recycled aggregate for environmental improvements.
Mar 20, 2012 · Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 years. This paper provides a comprehensive review of the related findings of research on the mechanical properties of RAC in China. The influences of the RCA on the strength and deformation characteristics of concrete, the statistical characteristics for the strength of ...
Use Of Recycled Aggregate In Concrete -BY Mr. Tushar R Sonawane RESEARCH GRADUATE MAEER‟S MIT PUNE, Prof. Dr. Sunil S. Pimplikar H. O. D. CIVIL ENGG. DEPARTMENT, MAEER‟S MIT PUNE. _____ ABSTRACT Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future.
strength of recycled-aggregate concrete was found showing that 15% lower elastic modulus is achieved by using 30% recycled aggregates. Finally, on the basis of the results obtained it seems that, particularly if finer coarse recycled-concrete aggregate is used, lower shrinkage strains are detected especially for earlier curing times.
Green Concrete: Recycled Aggregate and Partial Replacement of Cement with Fly Ash - written by Vipin Mahadeven , Abhishek Kumar Verma , Deepak Patel published on 2019/05/01 download full article with reference data and citations
Use of recycled concrete aggregate in concrete: a review Md. Safiuddin School of Construction Management and Trades, Centre for Construction and Engineering Technologies, George Brown College, Casa Loma Campus, 160 Kendal avenue, Toronto, ON M5R 1M3, Canada Correspondence [email protected]
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
A Review on Recycled Concrete Aggregates. ... works carried out in CEDEX and also from literature review. The results show that the main properties unfavourably affected by the attached mortar ...
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 ...
 Shui Zhonghe, Pan Zhisheng, Zhu Wenqi et al. The micro structural features of the recycled aggregate concrete [J]. Journal of Wuhan University of Technology，2003，25(12)：99-102.  Katz A. Properties of concrete made with recycled aggregate from partially hydrated old concrete[J].
Recycled Aggregates (www.cement.org) — Construction materials are increasingly judged by their ecological characteristics. Concrete recycling gains importance because it protects natural resources and eliminates the need for disposal by using the readily available concrete as an aggregate source for new concrete or pavement sub-base layers.
Numerous experimental and theoretical studies on recycled aggregate concrete have been carried out in China in the past 10 years. This paper provides a comprehensive review of the related findings of research on the mechanical
The states that do use recycled concrete aggregate (RCA) in new concrete report that concrete with RCA performs equal to concrete with natural aggregates. Most agencies specify using the material directly in the project that is being reconstructed. Recycling of concrete is a relatively simple process.
IJIRT 148913 INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN TECHNOLOGY 271 Strength and Durability Properties of Concrete with Recycled Plastic Aggregate: A Review Dhanagar G.S.1, Kumbhar, P.D2 1B.Tech. Student, Dept. of Civil Engineering, Rajarambapu Institute of Technology, Islampur, Maharashtra, India.