The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement

Butler, Lynda L.; West, Jeffrey S.; Tighe, Susan

doi:10.1016/j.cemconres.2011.06.004

Cited by 357 publications

(118 citation statements)

References 13 publications

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“…For natural aggregate ACV was: 5.06% for 4-8 mm fraction, 9.02% for 8-16 mm fraction and 2.84% for the whole aggregate (4-16 mm). The AVC results for utilized RCA fall within a similar range to those presented in the literature [31][32][33][34]. All aggregates was used at air dried conditions.…”

Section: Experiments 21 Materialssupporting

confidence: 67%

Influence of SCM on the Permeability of Concrete with Recycled Aggregate

Kubissa

Jaskulski

Brodňan

2016

Period. Polytech. Civil Eng.

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The article presents experimental analysis of concretes mixed by using natural and low quality recycled concrete aggregate (RCA) Roman JaskulskiWarsaw University of Technology Branch in Płock, Poland e-mail: romanjas@pw.plock.pl Miroslav BrodnanUniversity ofZilina, Slovakia e-mail: brodnan@fstav.uniza.sk IntroductionIncreasing the use of recycled concrete aggregate (RCA) and supplementary cementitious materials (SCM) in concrete industry can considerably enhance the environmental friendliness of concrete production. The availability of natural sources of aggregates, which makes up about 60%-70% of concrete volume, is becoming more limited due to restrictions on quarrying operations and longer hauling distances. The disposal of old concrete, which remains from demolished structures, is still a problem and frequently it is deposited in the landfills [1]. So a growing trend to replace the traditional concrete constituents with more sustainable materials is increasingly present in concrete technology. Using RCA as a substitute for natural aggregates and SCM as a partial cement replacement in concrete mixtures is a way to potentially address the economic and environmental concerns. Dosho 2007 [2] wrote about papers on recycled aggregate concrete that has been published just after World War II: physical properties by Glruzhge in 1946, Russia, and the influence of mixture impurities by Graf in 1948, Germany. First detailed test results on application of the RCA in concrete technology were published by Nixon in 1978 [3]. He suggested that the main field in which more information about the behaviour of the recycled concrete is required is its durability. The studies on the application of RCA into concrete mixture have mainly concerned mix design [4,5], mechanical properties [6][7][8], structural performance [9,10] and the final purpose [11,12]. Until now many of the durability parameters have been investigated and technological recommendation and detailed requirements according to quality of RCA has been drawn [13]. It has been stated that is possible to design and prepare durable concretes by using adequately good quality RCA. The aggregate characteristics of density, porosity and water absorption are a primary focus in determining the proper concrete mixture and the required concrete properties. These characteristics should be known to limit water absorption capacity of aggregates to no more than 5% for structural concrete, and thus the proportion of RCA is often limited in concrete mixes [13,14].Most of the research concerning RCA quality and the durability of concrete mixed by using RCA has been performed in

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Section: Experiments 21 Materialssupporting

confidence: 67%

Influence of SCM on the Permeability of Concrete with Recycled Aggregate

Kubissa

Jaskulski

Brodňan

2016

Period. Polytech. Civil Eng.

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“…This action saves the deposit storages required and protects the environment. This requirement was mentioned in references [1,5].…”

Section: Recycled Aggregate Used In Concrete (Ag9)mentioning

confidence: 99%

“…A research was conducted in Canada in 2011 by Butler and et al to explain the effect of using recycled aggregate to the reinforcement and concrete bond [5]. They prepared mixtures of natural aggregate (NA) of crushed limestone and two types of recycled aggregates (RA).…”

Section: Literature Reviewmentioning

confidence: 99%

Sustainability Requirements of Concrete Structures

Rageh¹,

Hosny²,

Abdel-Rehem³

2017

AJCEA

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The objective of this research paper is to discuss the main requirements which may affect the sustainability of concrete structures and develop the relative weights of these requirements. A questionnaire survey was conducted among construction experts, such as college staff, contractors and construction engineers. The survey was conducted to identify the relative weights of the concrete sustainability requirements. After reviewing literature, fifty nine factors which affect the concrete sustainability were prepared and divided them into 12 categories. A pilot study was conducted by 19% of sample size to enhance the questionnaire design. The pilot study was filled out by 10 college professors and 9 engineers with experience more than 10 years. This study helped us to modify the requirements which were directly connected with the concrete sustainability. Researchers found that the most important factors were related to "Aggregate" category. Aggregate category has the weight of 17.64% and waste category has the weight of 13.04%. These two categories have about 30% of concrete sustainability weight. The Green Pyramid Rating System (GPRS) was used in the present research to know what could be added.

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“…These properties have a negative influence on RAC quality due to the following: (i) the increased concrete porosity which could mainly be attributed to the residue of mortar adhering to the original aggregate (ii) the weak aggregate-matrix interfacial bond [22][23][24] and (iii) the fissures which might be formed in recycled aggregates during processing thereby rendering the recycled aggregate having weaker structure [25]. This explanation has been confirmed by SEM analysis of the recycled aggregate used in the experiments, as shown in Figure 1.…”

Section: Compressive and Splitting Strength Of Concretesmentioning

confidence: 99%

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

al-Swaidani¹

2017

MOJCE

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In the study, supplementary cementing materials (SCMs) have been added in an attempt to improve the performance of recycled aggregate concrete. The use of such eco-friendly materials could also promote a further greening practice in the concrete industry. The concrete performance was evaluated in terms of mechanical properties and concrete permeability. Mechanical properties investigated include compressive strength and modulus of elasticity of concrete. Water permeability, chloride penetrability have particularly been studied to evaluate the permeability properties. The results revealed that the use of SCMs could improve produce greater compressive and modulus of elasticity than those of the recycled aggregate concrete alone. Further, the results showed that permeability properties of recycled aggregate concrete have significantly been improved with addition of these SCMs. Basaltic aggregates were used for comparison and SEM analysis was employed as well.

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The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement

Cited by 357 publications

References 13 publications

Influence of SCM on the Permeability of Concrete with Recycled Aggregate

Influence of SCM on the Permeability of Concrete with Recycled Aggregate

Sustainability Requirements of Concrete Structures

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

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