structural concrete prepared with coarse recycled concrete

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

(PDF) Structural Concrete Prepared with Coarse Recycled ...

RACs were prepared by using a coarse aggregate fraction made of recycled concrete coming from a recycling plant in which rubble from concrete structure demolition is collected and suitably treated.

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Structural Concrete Prepared with Coarse Recycled Concrete ...

RACs were prepared by using a coarse aggregate fraction made of recycled concrete coming from a recycling plant in which rubble from concrete structure demolition is collected and suitably treated. Several concrete mixtures were prepared by using either the only virgin aggregates (as reference) or 30% coarse recycled aggregate replacing gravel ...

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Structural concrete with incorporation of coarse recycled ...

Jul 29, 2008  Santos et al. tested a reference concrete (RC) and two recycled aggregates concrete (RAC), both without NCA and with recycled coarse aggregates (RCA) from concrete mixes with different water/cement ratios, to determine their water absorption by immersion: 6.8%, 9.6% and 9.8%, respectively. The corresponding porosity values were 15.2%, 20.1% and ...

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Structural concrete with incorporation of coarse recycled ...

Structural concrete with incorporation of coarse recycled concrete and ceramic aggregates: durability performance. Materials and Structures, 2009. Marco Gomes. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

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Structural concrete with incorporation of coarse recycled ...

DOI: 10.1617/S11527-008-9411-9 Corpus ID: 137103219. Structural concrete with incorporation of coarse recycled concrete and ceramic aggregates: durability performance @article{Gomes2009StructuralCW, title={Structural concrete with incorporation of coarse recycled concrete and ceramic aggregates: durability performance}, author={M. M. Gomes and J. Brito}, journal={Materials and Structures ...

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Properties of Self Compacting Concrete Using Recycled ...

Jan 01, 2013  Propertis of self-compacting concrete prepared with coarse recycled concrete aggregate. Construction and Building Materials 24, pp. 1129-1133. [3] Fonseca, N., Brito, J..D., Evangelista, L., 2011. The influence of curing conditions on the mechanical performance of concrete made

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Properties of self-compacting concrete prepared with ...

Jul 01, 2010  Results of the tensile strength testing by bending indicate that hardness of control concrete after 28 days is higher for 0.18 N/mm 2 or 2.49% in respect to the concrete with 50% of coarse recycled aggregated and for 1.01 N/mm 2 or 13.95% in comparison to the concrete with 100% of coarse recycled aggregate. This reduction of strength was caused ...

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Design of structural concrete mixtures containing fine ...

Aug 20, 2020  Based on the lack of appropriate mix design for structural recycled concrete, researchers applied the Compressive Packing Model (that had already been successfully adopted for several families of concretes) for recycled concretes containing coarse RCA and the method was a success for the mixture proportioning of recycle concretes of different ...

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STUDY ON MECHANICAL AND STRUCTURAL PROPERTIES OF ...

Abstract -This paper presents the study on Mechanical and Structural properties of Geopolymer concrete prepared by using recycled materials as coarse aggregate. The strength properties include Compressive strength, Split tensile strength and Flexural strength.

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Enhancing mechanical properties of concrete prepared with ...

(2015). Enhancing mechanical properties of concrete prepared with coarse recycled aggregates. The IES Journal Part A: Civil Structural Engineering: Vol. 8, No. 3, pp. 175-183.

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Recycled Concrete Aggregate for Medium-Quality Structural ...

This paper reports an evaluation of the properties of medium-quality concrete incorporating recycled coarse aggregate (RCA). Concrete specimens were prepared with various percentages of the RCA (25%, 50%, 75%, and 100%). The workability, mechanical properties, and durability in terms of abrasion of cured concrete were examined at different ages.

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(PDF) Micro-structural analysis of recycled concretes made ...

abstract. This paper investigates the microstructure of 100% recycled concrete (RC) containing recycled coarse con-. crete aggregates (RCA) using scanning electron microscopy (SEM). In this study ...

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Why not recycled concrete? News Notre Dame News ...

Feb 08, 2016  “Coarse aggregates, such as crushed rock and gravel, make up most of a given concrete volume. ... Gino Kurama “Much of the research to date and the state-of-practice pertaining to sustainable use of structural concrete has focused on the partial replacement of cement with industrial byproducts, such as fly ash, slag and silica fume ...

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Microstructure of concrete prepared with construction ...

In this context, the use of fine recycled concrete aggregates to replace natural fine aggregates in the production of structural concrete was tested, and attained microstructures are reported. The recycled aggregates were obtained from a standard concrete, produced and crushed under laboratorial conditions, thus allowing full control of ...

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Reusing recycled aggregates in structural concrete - NASA/ADS

The utilization of recycled aggregates in concrete can minimize environmental impact and reduce the consumption of natural resources in concrete applications. The aim of this thesis is to provide a scientific basis for the possible use of recycled aggregates in structure concrete by conducting a comprehensive programme of laboratory study to gain a better understanding of the mechanical ...

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Recycled aggregate concrete as structural material ...

Jul 13, 2006  An Integrated approach, Proceedings of the International Symposium on ‘Sustainable Construction: Use of Recycled Concrete Aggregate’, London, UK, pp 419–431. 3. Roberto dos Santos J, Branco F, de Brito J (2004) Mechanical properties of concrete with coarse recycled aggregates. Structural Engineering International 3/2004, 213–215. 4.

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Study of Partial Replacement of Natural Aggregate by ...

making normal structural concrete with the addition of fly ash, condensed silica fume, etc. Sudhir P.Patil, Ganesh S.Ingle, and Prashant D.Sathe (2013) [6] had a study on recycled coarse aggregate and aims to evaluate physical properties of concrete using recycled coarse aggregate. Research

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The Effect of Fine and Coarse Recycled Aggregates on Fresh ...

Two series of self-compacting concrete mixes have been prepared. In the first series, fine and coarse recycled mixtures respectively with 50% and 100% replacement with air entraining agent were used. In the second series, fine recycled (with 50% replacement) and coarse recycled (with 100% replacement) were used with silica fume.

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Vol. 2, Issue 3, March 2013 Recycled Plastics as Coarse ...

Seeking aggregates for concrete and to dispose of the waste from various commodities is the present concern. Today sustainability has got top priority in construction industry. In the present study the recycled plastics were used to prepare the coarse aggregates thereby providing a sustainable option to deal with the plastic waste [10].

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Recycled Concrete Aggregate (RCA) for Infrastructure ...

recycled concrete aggregate (RCA) in concrete used for structural purposes. Using RCA in concrete has been shown in recent studies to be able to produce adequately strong concrete with an inherent property of high paste content. Although high paste contents can lead to creep and durability problems, in many applications such as sidewalks and

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  In addition, concrete properties produced with fine and coarse recycled aggregate were evaluated. Several concrete mixes were prepared with 100 % recycled aggregates and the results were compared to that of a control mix. SEM was conducted to examine the microstructure of selected mixes.

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Microstructural Characterization of Concrete Prepared with ...

Introduction. Construction throughout the world depends on concrete as a versatile, cheap, and efficient material. Concern regarding conservation of natural resources, shortage of waste land, the increasingly large volume of residues, and the high cost associated with treatment before disposal are driving growing interest in the recycling of construction and demolition waste (CDW).

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

Abstract 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%). The experimental program consisted of studying basic properties and ...

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Recycled Concrete Aggregate for Use in Reclamation ...

Concrete, Geotechnical, and Structural Laboratory, 86- 68530 ... Recycled Concrete Aggregate for Use in Reclamation Structures Prepared by: Catherine Lucero, MSCE, EIT . Civil Engineer, Concrete, Geotechnical, and Structural Laboratory, 86-68530 ... Compressive strength of concrete with 100% recycled coarse aggregate. .....11 Figure 3. Use of ...

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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 RCA concrete ...

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Recycled Concrete Aggregate for Medium-Quality Structural ...

This paper reports an evaluation of the properties of medium-quality concrete incorporating recycled coarse aggregate (RCA). Concrete specimens were prepared with various percentages of the RCA (25%, 50%, 75%, and 100%). The workability, mechanical properties, and durability in terms of abrasion of cured concrete were examined at different ages.

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Properties of Self-Compacting Concrete Prepared with ...

The purpose of this study is to analyze the influence of recycled coarse aggregates (RCA) used to manufacture self-compacting concrete with recycled aggregates (SCRC) by evaluating the characteristics of this concrete, particularly its self-compactibility.

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Use of Recycled Coarse Aggregate as an Alternative of ...

prepared. Similarly sampleswith recycled coarse aggregate werealso preparedand strength of natural coarse aggregate with recycled coarseaggregate was compared. In second stage, some samples of concrete were prepared with different percentage of natural aggregate and recycle aggregate in order to attain the

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The Influence of Utilizing Recycled and Reclaimed Coarse ...

Concrete for Structural Applications Saied KASHKASH, Zoltan ORBAN*, Oliver CZOBOLY Abstract: Utilizing recycled or reclaimed coarse aggregates in producing recycled concrete for structural applications helps in preserving natural resources from depletion and reduces the volume of waste created throughout construction and demolition. Recycling ...

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Role of Recycled Concrete Aggregates on the Long-Term ...

Sep 25, 2013  The effects of coarse recycled concrete aggregates on long-term behavior of concrete (shrinkage and creep) are investigated. Most important, corresponding prediction models have been compared with experimental findings, obtaining a systematic underestimation of results.

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  In addition, concrete properties produced with fine and coarse recycled aggregate were evaluated. Several concrete mixes were prepared with 100 % recycled aggregates and the results were compared to that of a control mix. SEM was conducted to examine the microstructure of selected mixes.

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Why not recycled concrete? -- ScienceDaily

Feb 08, 2016  "Coarse aggregates, such as crushed rock and gravel, make up most of a given concrete volume. ... to sustainable use of structural concrete has focused on the partial replacement of cement with ...

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Experimental Study on Recycled Concrete Aggregates

coarse recycled aggregates are reported in this paper. The mass production of construction and demolition are creating serious problems in India. In most of the countries applicability of construction and demolished wastes are restricted to non-structural concrete, pavements and backfilling.

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Upscaling the Use of Mixed Recycled Aggregates in Non ...

This research aims to produce non-structural concrete with mixed recycled aggregates (MRA) in upscaled applications with low-cement content. Four slabs were executed with concrete made with different ratios of coarse MRA (0%, 20%, 40% and 100%), using the mix design, the mixing procedures and the facilities from a nearby concrete production plant.

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On the Possibility of Using Recycled Mixed Aggregates and ...

of promoting recycling and reusing, the Spanish Standard for concrete [4] allows to use recycled aggregates for the preparation of concrete, both for structural and non-structural purposes. In the case of structural concrete, the Spanish standard only allows to use recycled aggregate originating from concrete.

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On Properties of Recycled Coarse Aggregate from Repeatedly ...

The properties of recycled coarsee aggregates from repeatedly recycling waste concrete were determined. In this study, five series of concrete mixtures using coarse and fine natural aggregates were prepared, which have the same objective slump value from 35mm to 50mm and different compressive strengths ranging from 25MPa to 60 MPa. These five concretes were crushed, sieved, washed with water ...

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Mechanical and durability properties of steel fiber ...

May 26, 2021  The focus of this study is to investigate the effect of using coarse recycled concrete aggregates (RCAs) as an alternative material to natural coarse aggregate on the fresh, mechanical and durability behavior of concrete reinforced with steel fiber. ... 50%, and 100% and steel fiber content of 0%, 1%, and 2% were prepared, and tests were ...

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