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Behaviour of Recycled Coarse Aggregate Concrete: Age and ...

May 13, 2016    Recycled Coarse Aggregate (RCA) concrete construction technique can be called as ‘green concrete’, as it minimizes the environmental hazard of the concrete waste disposal. Indian standard recommends target mean compressive strength of the conventional concrete in terms of water cement ratio (w/c). The present work is an attempt to study the behaviour

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(PDF) Behaviour of Recycled Coarse Aggregate Concrete: Age ...

The recycled coarse aggregate that produced from the construction repair and demolition was also included in some recent contributions [9][10] [11] while some of

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Behaviour of Recycled Coarse Aggregate Concrete: Age and ...

Jun 01, 2016  Recycled Coarse Aggregate (RCA) concrete construction technique can be called as `green concrete', as it minimizes the environmental hazard of the concrete waste disposal. Indian standard recommends target mean compressive strength of the conventional concrete in terms of water cement ratio ( w/ c). The present work is an attempt to study the behaviour of RCA concrete from two

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Mechanical behavior of recycled coarse aggregate concrete ...

May 01, 2017  Portland cement (P.O 42.5) was used in all mixtures. The coarse aggregate included nature coarse aggregate (NCA) and recycled coarse aggregate (RCA). RCA was waste commercial ready-mixed concrete obtained from a concrete testing station. The waste concrete was crushed in a jaw crusher, and sieved to 20 mm maximum size.

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Shear Strength Behavior of Recycled Coarse Aggregate

recycled aggregate concrete and presenting some fundamentals of shear strength of concrete. Key Words:. Recycled coarse aggregate, coarse aggregate, Demolished structure 1. INTRODUCTION Any construction activity requires several materials such as concrete, steel, brick, stone, glass, clay, mud, wood, and so on.

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Carbonation behaviour of recycled aggregate concrete ...

Sep 01, 2015  3.3. Quality of the recycled aggregate. Gomes and de Brito performed a very specific and detailed study on the influence of adding different RA types, such as RCA, RMA and MRA, on the durability-related properties of RAC. The MRA used was composed of 30% RMA and 70% RCA. When comparing the carbonation depth of RAC produced with 50% coarse RCA, 25% coarse RMA and 37.5% coarse

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Shear Strength Behavior of Recycled Coarse Aggregate

recycled aggregate concrete and presenting some fundamentals of shear strength of concrete. Key Words:. Recycled coarse aggregate, coarse aggregate, Demolished structure 1. INTRODUCTION Any construction activity requires several materials such as concrete, steel, brick, stone, glass, clay, mud, wood, and so on.

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Time-dependent behaviour of 100% recycled coarse aggregate ...

May 01, 2020  Creep behaviour of concrete using recycled coarse aggregates obtained from source concrete with different strengths Constr Build Mater , 128 ( 2016 ) , pp. 199 - 213 Article Download PDF View Record in Scopus Google Scholar

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Influence of recycled coarse aggregates on the bond ...

Mar 01, 2013  To investigate the bond behavior of deformed bars in recycled aggregate concrete (RAC), 144 tests were performed. In this paper, the following variables were considered: the aggregate size, four types of recycled coarse aggregate (RCA) replacement ratios, two reinforcing bar directions (vertical and horizontal), and two reinforcing bar locations (75 and 225 mm from the bottom).

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Mechanical and elastic behaviour of concretes made of ...

Sep 01, 2010  In this paper an investigation of mechanical behaviour and elastic properties of recycled-aggregate concretes is presented. These concretes were prepared by alternatively using two different (coarse and finer coarse) recycled-aggregate fractions both made of recycled concrete coming from a recycling plant in which rubble from demolition is collected and suitably treated.

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Behavior of Reinforced Concrete Beams with Recycled ...

Jan 08, 2013  This paper investigates the flexural and shear behavior of reinforced concrete beams that use recycled concrete aggregates (RCA) as replacement for coarse natural aggregates (e.g., crushed stone, gravel).

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Mechanical behaviour of seawater sea-sand recycled coarse ...

Dec 30, 2019  The combined use of seawater, sea-sand and recycled coarse aggregates in producing concrete can enhance the mechanical behaviour of ordinary RAC. 3) The mechanical behaviour of the NAC-SSRAC composite concrete columns was similar to that of monolithic NAC specimens; however, the ultimate displacement was decreased by 13.8% and the cracking ...

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Time-dependent behaviour of structural concrete made with ...

Sep 30, 2016  This work is focused on studying the time-dependent properties of recycled concrete, especially shrinkage and creep behaviour. For said purpose, two series of concretes (water to cement ratios of 0.50 and 0.65) were designed with different replacement percentages of recycled coarse aggregate (0%, 20%, 50% and 100%).

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Shear Behavior of Recycled Coarse Aggregate Concrete Beams ...

The recycled coarse aggregate replaced natural crushed aggregate by 0%, 25%, 50%, 75% and 100%. The compressive strength of the concrete using recycled coarse aggregate showed more

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An overview of bond behavior of recycled coarse aggregate ...

In this paper, an overview focusing on the bond behavior of recycled coarse aggregate concrete (RAC) with steel bar is carried out. The results show that the failure modes of RAC specimen were not ...

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(PDF) Shear Behavior of Recycled Aggregate Concrete Beams

The application of recycled coarse aggregates (RCA) in high-performance concrete (HPC) was analyzed in the article. In the paper, the behavior of HPC with coarse recycled aggregate and natural ...

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(PDF) Recycled Plastic as an Aggregate in Concrete

The main objective of this work is the development of a new sand concrete whose aggregates consist only of river (0/4 mm) or dune (0/63 mm) sand and recycled plastic aggregates (0/3.15 mm).

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Mechanical behavior of concrete using seawater and sea ...

Jul 05, 2019  This paper studies the mechanical behavior of seawater sea‐sand concrete (SSC) and explores the feasibility of mixing SSC with recycled coarse aggregate (RCA). The early‐age cracking and mechanical behaviors of SSC with or without the addition of RCA are experimentally studied.

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IRJET-Shear Strength Behavior of Recycled Coarse Aggregate

Recycled coarse aggregate, coarse and demolition (C D) waste to the tune of 23.75 aggregate, Demolished structure million tons annually and these figures are likely to double fold in the next 7 years. CD waste and specifically concrete has been seen as a resource in 1.

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273-RAC : Structural behaviour and innovation of recycled ...

Using recycled coarse aggregate (RCA) to replace part or all natural coarse aggregate (NCA) in concrete mixing is one of the effective methods for reclaiming wasted concrete. As a type of green material, in recent years, many researchers have engaged in exploring ways to

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Behaviour of Concrete by Partial Replacement of Coarse ...

of coarse aggregate is done and its mechanical behaviour is investigated. II. LITERATURE REVIEW [1] “Recycled Plastics as Coarse Aggregate for Structural Concrete”: Praveen Mathew, Shibi Varghese, Thomas Paul, Eldho Varghese (2013) The use of plastic is increasing day by day, although steps were taken to reduce its consumption.

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Bonding Behavior of Deformed Steel Rebars in Sustainable ...

In order to assess the bond behavior of deformed steel rebars in recycled-aggregate concrete (RAC) incorporating both fine and coarse recycled aggregate, pull-out tests were carried out in this study on 16-mm diameter deformed steel rebars embedded concentrically in RAC. The concrete was designed us

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Properties of recycled concrete aggregate under different ...

The coarse recycled concrete aggregate was obtained by crushing a laboratory produced primary concrete at age of 28 days. About 250 cubes of dimension 15 * 15 * 15 cm were crushed to produce the recycled coarse aggregates using mix design No.1 (Table 1). After crushing of these cubes, the max-imum nominal size of recycled coarse aggregate used ...

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ICE Themes Recycled Aggregates: Use in Concrete

Aug 23, 2019  Long-term behaviour of simply supported composite slabs with recycled coarse aggregate Authors: Yuyin Wang , Qinghe Wang , Yue Geng , Gianluca Ranzi Source: Magazine of Concrete Research, Volume 68, Issue 24 , 1 Dec 2016 (1278–1293)

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Effect of Using Recycled Coarse Aggregate to the Bond ...

In this way, using these materials in new construction is considered a good sustainable and cost effective solution. The basic objective of this study is to investigate the behavior of lap splice when recycled coarse aggregate is used in structural members by experimental program. This program comprises casting 12 beam splice specimens.

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Usage potential of recycled aggregates in mortar and concrete

Usage potential of recycled aggregates in mortar and concrete Martinez-Lage et al. (2012) have reported a study on the behavior of concrete made with mixed recycled coarse aggregate, with a high percentage of fired clay (brick and similar) waste.

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(PDF) Carbonation behaviour of recycled aggregate concrete

This study presented the carbonation behavior of repeatedly recycled aggregate concrete (RRAC) used in a micro-frozen region. The effects of freeze–thaw cycles on the carbonation depth of three ...

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Influence of field recycled coarse aggregate on properties ...

May 06, 2010  The term coarse aggregate replacement ratio (CRR) is defined as the ratio of weight of recycled coarse aggregate to the total weight of coarse aggregate used in the mix. In this study, four concrete mixes namely MCRR 0.0, MCRR 0.25, MCRR 0.5 and MCRR 1.0 are prepared with a coarse aggregate replacement ratios of 0.0, 0.25, 0.50 and 1.0 ...

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Mechanical behavior of concrete using seawater and sea ...

Jul 05, 2019  This paper studies the mechanical behavior of seawater sea‐sand concrete (SSC) and explores the feasibility of mixing SSC with recycled coarse aggregate (RCA). The early‐age cracking and mechanical behaviors of SSC with or without the addition of RCA are experimentally studied.

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Early-age behavior of recycled aggregate concrete under ...

In this study, the intrinsic properties of recycled coarse aggregates (RC), associated with bonded mortar, were modified with two different pretreatment techniques viz-a-viz HCl pretreatment and ...

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(PDF) Recycled Plastic as an Aggregate in Concrete

The main objective of this work is the development of a new sand concrete whose aggregates consist only of river (0/4 mm) or dune (0/63 mm) sand and recycled plastic aggregates (0/3.15 mm).

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Kirtikanta Sahoo - KIIT School of Civil Engineering

"1. Enhancement of properties of recycled coarse aggregate concrete using bacteria.International Journal of Smart and Nano Materials 7 (1), 22-38 2.Behaviour of recycled coarse aggregate concrete: age and successive recycling. Journal of the Institution of Engineers (India): Series A 97 (2), 147-154

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Structural Behavior of Concrete Beams Containing Recycled ...

Jul 04, 2020  The structural behavior of concrete beams containing recycled coarse aggregates (RCAs) was investigated in this study using detailed experimental data. Twelve concrete beams were tested in the experimental program: nine beams with varying RCA contents and three control beams with natural coarse aggregates (NCAs). The parameters for investigating the structural behavior of the

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