Recycling Of Demolished Concrete As Aggregate Abstract, china good durability fiber cement concrete board for

Recycled Aggregates - Portland Cement Association

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.


Abstract: Demolished concrete and building rubble waste presents an environmental problem in terms of ways of disposal and use. The amount of structural waste in Kuwait for 1996 was around 2 million tons, out of which 30% is concrete.

Utilisation of Recycled Aggregate as Coarse Aggregate in Concrete

UNIMAS E-Journal of Civil Engineering, Vol. 1: issue 1 /August 2009 1 Abstract In this rapid industrialised world, recycling construction material plays an important role to preserve the natural resources. In this research, recycled concrete aggregates (RCA) from site ...

Experimental Study of Compressive Strength of Recycled

The utilization of recycled aggregate is particularly very promising as 75 per cent of concrete is made of aggregates. The enormous quantities of demolished concrete are available at various construction sites, which are now posing a serious problem of disposal in urban areas. This can easily be recycled as aggregate and used in concrete.

Recycling Concrete for Sustainable Construction

recycling are lacking, but it is reasonable to expect that more than 5 million tons of recycled aggregate is used annually in the state (Wolfe, 2011). One of the most common recycled materials and the focus of this paper is recycled concrete aggregate (RCA). RCA production was estimated at 95 million tons in

Recycling Fine Aggregate from Demolished Hollow

Page 1 of 10 Recycling Fine Aggregate from Demolished Hollow Concrete Block for Green Concrete in Ethiopia Lucy Feleke Nigussie1*, Muge Mukaddes Darwish 2 and Tewodros Ghebrab 1Department of civil and Environmental Engineering, Jimma University Institute of Technology, Jimma, Ethiopia ...

Experimental Investigation of Recycle Concrete Aggregate

aggregate with reduced water absorption and other desired properties of natural aggregate. The concrete made out of these treated aggregates are able to achieve strength and performance characteristics on par with natural aggregate. Keywords: Recycle Concrete Aggregate by Chemical Treatment

Experimental Investigation on Concrete with Replacement of

Demolished concrete fritter away obtain following the destruction of the arrangement is a life form correctly process previous to the coarse aggregates of it be able to exist used in concrete production. Consequently, these process coarse aggregates utilize in the concrete in cast-off aggregate and concrete [4].

Recycling of Brick Aggregate Concrete as Coarse

2015/07/07 · AbstractAn extensive investigation was carried out for recycling of demolished brick aggregate concrete as coarse aggregate. For this, demolished concrete blocks were collected from 33 different bu... Create a new

Effect of Flyash on Recycle Coarse Aggregate Concrete

materials are increasingly judged by their ecological characteristics. Recycling of demolished concrete is gaining 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 other applications.2 The demand of concrete expected to

Recycling of Demolished Concrete and E-waste

Call for Papers - International Journal of Science and Research (IJSR) is a Peer Reviewed, Open Access International Journal. Notably, it is a Referred, Highly Indexed, Online International Journal with High Impact Factor.

Recycling of Demolished Concrete and Mortar in Manufacturing

Call for Papers - International Journal of Science and Research (IJSR) is a Peer Reviewed, Open Access International Journal. Notably, it is a Referred, Highly Indexed, Online International Journal with High Impact Factor.


ABSTRACT An extended study was carried out to explore the possibility of recycling of concrete made with brick aggregate as coarse aggregate. Demolished concrete blocks were collected from six demolished building sites and then crushed into coarse aggregate manually. Physical properties of the coarse aggregate collected from the blocks were evaluated. Cylindrical concrete samples (100 mm …

Studies on Strength and Related Properties of Concrete

In an earlier study, a comprehensive and critical review of previous investigations into the assessment of the strength of concrete incorporating aggregates from demolished wastes was conducted and it was concluded that there was a stark absence of results from the South African sub-continent including Botswana.

Recycling of Demolished Concrete

Therefore, a great deal of research is being conducted to find ways to recycle this demolished concrete as concrete aggregate. However, because the characteristics of the original concrete are not well known in many cases, the results are also not clear.

Utilization of Demolished Waste as Coarse Aggregate in Concrete

The objective of this study is to investigate the possibility of using old recycled concrete as coarse aggregate to make new concrete mixes, and its effect on the evolution of the compressive strength of the new concrete mixes. Core samples for demolished concrete were tested to determine its compressive strength.

Durability Aspects of Recycled Aggregate Concrete: An

Authors: Smitha Yadav, Snehal Pathak Abstract: Aggregate compositions in the construction and demolition (C&D) waste have potential to replace normal aggregates. However, to re-utilise these aggregates, the concrete produced with these recycled aggregates needs to provide the desired compressive strength and durabil

Strengths of Recycled Aggregate Concrete Made Using

1996/03/01 · Experimental work was performed to determine the compressive, splitting tensile, and flexural strengths of recycled coarse aggregate concrete and to compare the Title: Strengths of Recycled Aggregate Concrete Made Using Field-Demolished Concrete as Aggregate ...

An Investigation of Mechanical Properties of Recycled Coarse

In this paper, C25 waste road concrete is used as an experimental material, the uniaxial compression strength and tensile splitting strength of C25 RAC whose coarse aggregate replacement rate is 0%, 25%, 50%, 75%, and 100% are tested under the condition that the water-to-cement ratio is 0.47, 0.55 and 0.61.

Recycled Aggregate

Recycled aggregate is produced by crushing concrete, and sometimes asphalt, to reclaim the aggregate. Recycled aggregate can be used for many purposes. The primary market is road base. For information on recycling asphalt pavement into new asphalt pavement. See Asphalt Pavement Recycling.

Mechanical Properties of Field Demolished Aggregate Concrete

demolished waste is Recycling or Re-utilization of recycled material. The recycled aggregate can be obtained from concrete and masonry waste by the following sequence of operations like sorting, crushing and sieving. The recycled aggregate thus obtained is used as concrete material in road

The Importance of Concrete Recycling

Dec 29, 2017 · This term refers to the center layer of the roadbed. A cross-section of pavement would show dirt, or subgrade, as the lowest of three levels, layered on top by aggregate base course, and finally capped on top by pavement, either concrete or asphalt. This application is widely accepted for recycled concrete by Departments of Transportation.

Recycling Fine Aggregate from Demolished Hollow Concrete

crushed concrete with aggregate. Recycling of demolition debris was started since the end of 2nd world war, which used crushed brick as aggregates in concrete [20]. Using crushed concrete from demolition waste as aggregate instead of natural resources as well as using demolished concrete pavement to stabilize the road base

World Academy of Science, Engineering and Technology

[14] F. M. Khalaf, A. S. DeVenny “Recycling of Demolished Masonry Rubble as Coarse Aggregate in Concrete: Review” Journal of Materials in Civil Engineering, 16, issue 4, August, 2004. [15] A. R. Khaloo “Properties of concrete using crushed clinker brick as coarse aggregate” ACI Materials Journal, 91,2 1994, pp. 401-407.


INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 2, ISSUE 6, JUNE 2013 ISSN 2277-8616 192 IJSTR©2013 Figure 1. Variation of the density of fresh concrete in the rate of substitution This decrease can be explained logically due to the higher porosity and light impurities present in these aggregates, in

Partial Replacement of Coarse Aggregate with Demolished Waste

the demolished concrete aggregate 10%, 20%, 30% by weight of the conventional coarse aggregate and the concrete cubes were casted by that demolished concrete aggregate then further tests conducted such as workability , compressive strength for that DAC and the result obtained are found to be comparable with the conventional concrete.

Experimental Study of Compressive Strength of Recycled Aggregate Concrete

Cycle Assessment (LCA) and effective recycling of the construction resources. Using the demolished concrete debris as recycled concrete aggregate conserves natural aggregates, reduces the impact on landfills, decreases energy consumption and can provide cost savings. The use of recycled aggregates in


Based on this perspective, it is realized that concrete industry can be made sustainable through recycling of the demolished concrete. RECYCLED AGGREGATE . Recycling is the act of processing the used material for use in creating a new product. The usage of natural aggregate

Recycled Concrete as Aggregate for Structural Concrete Production

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

Experimental study on reuse of demolished concrete

2018/11/12 · IEEE Exalin Bibila M., Nisha P. S., Sathya B.. Experimental study on reuse of demolished concrete waste, International Journal of Advance Research, Ideas and Innovations in Technology, We are glad


ABSTRACT This paper presents the results of a research study on the environmental impact produced by the recycling of concrete originating from construction and demolition waste (C&DW). The aim of the study was to implement a life cycle inventory (LCI) of the concrete recycling phases. It was carried out in Spain, with data collected from the ...

Experimental study on reuse of demolished concrete waste

produced from demolished waste and their utilization in concrete and governmental initiatives towards recycling of demolished waste. Along with a brief overview of the engineering properties of recycled aggregates, the paper also gives a summary of the effect of the use of recycled aggregate on the properties of fresh and hardened concrete.

Assessing Relationships Among Properties of Demolished

Abstract. Recycled demolished concrete (DC) as recycled aggregate (RA) and recycled aggregate concrete (RAC) is generally suitable for most construction applications. Low-grade applications, including sub-base and roadwork, have been implemented in many countries; however, higher-grade activities are rarely considered. This paper examines

Experimental Study of Compressive Strength of

Experimental Study of Compressive Strength of Recycled Aggregate Concrete Prof. Dharmesh K. Bhagat, Civil Engineering Department, Sarvajanik College of Engineering and Technology, Surat, India Jigar P. Parmar Civil

Rammed Earth incorporating Recycled Concrete Aggregate: a

abstract = "Construction and demolition debris, mainly concrete and masonry rubble, represent a significant share of municipal waste. Recycling crushed concrete aggregates and using them as substitutes for natural ones might therefore be determinant in reducing landfilling and mineral resource depletion.

Recycling of demolished concrete and masonry : report of

Get this from a library! Recycling of demolished concrete and masonry : report of Technical Committee 37-DRC, Demolition and Reuse of Concrete. [Torben C Hansen; International Union of Testing and Research Laboratories for Materials and Structures. Technical Committee 37-DRC.]

Waste management strategies for concrete

Jun 22, 2001 · Recycling and reuse of waste such as building rubble, concrete lumps, etc. generated at construction and demolition sites form part of a wider, complex issue, primarily relating to improving supplies of construction material and solving problems of disposal of waste construction material. Within the framework of the sustainable development of the environment, the use of waste materials with ...

A short note on recycled concrete aggregate

demolished concrete waste will be cleared up by using recycled concrete aggregate. Recycling of demolished concrete can create an additional business opportunity and save money for local government and also other purchasers. So, for many reasons recycling of demolished concrete becoming popular day by day.